breaker sace emax

Low voltage power circuit-breakers

SACE Emax

ABB Control

Technical catalog

604022/011 enMarch '99

Rated maximum voltage 635 VRated voltage 600 VRated continuous current 800 A - 5000 ARated short-circuit current 42 kA - 125 kA (480 V)Rated short-time current 35 kA - 100 kA

GENERAL INDEX

IntroductionTechnology and innovation foradvanced plant engineeringrequirements 2

More efficient, saferinstallations 4

“Intelligent design” 6

Compact switchboards 7

Optimal warehousemanagement 8

A design dedicatedto Quality and respectfor the environment 10

Standards, approvals,certifications and companyQuality System 12

Overcurrent tripunits and relativeaccessoriesOvercurrent protection withSACE PR111 microprocessor-based trip units 38

Trip curves of circuit-breakerswith SACE PR111 trip units 42

Overcurrent protection withSACE PR112 microprocessor-based trip units 44

Trip curves of circuit-breakerwith SACE PR112 trip units 48

SACE PR010/T test andconfiguration unit 52

AccessoriesCircuit-breaker and fixedpart accessories 54

Spare parts 67

Overall dimensionsFixed circuit-breaker 7070707070

Withdrawablecircuit-breaker 7474747474

Mechanical interlock 8282828282

Circuit-breaker accessories 8383838383

Electrical circuitdiagramsOperating state shown 8686868686

Circuit diagram symbols 8787878787

Electrical circuit diagrams 8888888888

MaincharacteristicsElectrical specifications 16

Construction characteristics 18

Identification ofcircuit-breakers 24

Versions and connections 25

SACE PR111 and PR112microprocessor-basedtrip units 26

Accessories 30

Installation inswitchboardsInstallation in switchboards 32

Derating in altitude 36

Introduction

Characteristics

Installation in switchboards

Accessories

Overall dimensions

Circuit diagrams

Trip units

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Technology and innovationfor advanced plant engineering requirements

The constant increase in the technological and functional com-plexity of electrical installations makes it essential for everycomponent - particularly those such as protection circuit-break-ers which are crucial to safety - to offer the highest levels ofcontinuity of service and reliability combined with minimalmaintenance requirements.

ABB SACE L.V. has designed the new generation of SACE Emaxlow voltage power circuit-breakers in line with these advancedplant engineering requirements, and featuring high resistanceto mechanical, electrical and thermal stresses.

SACE Emax circuit-breakers represent the logical functionalcomplement to SACE Isomax S molded case circuit-breakersand have, like them, been designed for integration and perfectco-ordination with the different lines of ABB low voltage prod-ucts.

The design and manufacture of the new circuit-breakers fol-low advanced ergonimical criteria, in line with the solutionsadopted for selection and use of SACE Isomax S switchgear -entirely to the benefit of all catagories of customers and users.

Two aspects received particular attention during design: themodular versatility and physical dimensions of the differentsizes, reduced from the six of the SACE Megamax series tofour.

SACE Emax circuit-breakers are available in five different models:E1, E2, E3, E4 and E6, each of which benefits from the inter-changeability of the various different versions of moving parts(with different breaking and rated current capacities) for thesame fixed part. The rated uninterrupted currents range from800 to 5000 A.

The breaking capacities, which have been improved in rela-tion to the previous series, range from 42 kA to 125 kA (480 Va.c.).

The new serieshas been designedin accordance withthe most modernergonomical criteria,and the evidencefor this can be seen inthe prize awarded tothe circuit-breakers atthe Hanover ForumDesign.

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The principal benefits of thenew SACE Emax circuit-breakers are as follows:

••••• Smaller overall dimensions

••••• Dimensions (height anddepth) the same across theentire series

••••• Common accessories forthe entire range

••••• The same service releasesfor a.c./d.c. applications

••••• Shared components - e.g.the opening and closingreleases are the same

••••• Easy assembly of the cur-rent transformers (CT)

••••• Accessories fitted withoutneed for cabling, reducingstock levels and optimizing“logistical” costs

••••• Distances from exposedconductive parts to be re-spected zero for withdraw-able circuit-breakers

••••• Simplified construction ofelectrical switchboards.

Briefly, high safety, quality,and rational design charac-teristics combined with com-pact dimensions are the re-sults of the totally innovativedesign criteria which lie be-hind SACE Emax circuit-breakers.

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More efficient, safer installations

SACE Emax circuit-breakers not only ensure the high level ofreliability needed to achieve the necessary service continuity,but also offer a high level of safety for everyone operating onthe installation, both during functional customization andduring inspection and maintenance.

The risk of carrying out incorrect and dangerous sequencesof operations is prevented of suitable locks.

Each sequence is only enabled if all the conditions which en-sure it can be carried out safely and correctly followed.

In any case, the state of the switchgear is automatically takento the highest safety level for the operator performing theoperation.

Accessories are installed from the front of the circuit-breakerwith cabling pre installed and the accessories section is sepa-rate from the power circuit.

Going into greater detail, the main solutions adopted to pro-tect operators in the various different operating conditions areas follows:

••••• Double insulation, to ensure total separation between theaccessories and the power circuit.

••••• Key locks or padlock devices, to control enabling of open-ing and closing operations and/or racking in and out

••••• Racking out with the door closed, allows the circuit-breakerto be racked out in its fixed part with the switchboard doorclosed.

••••• Anti-insertion locks, to prevent moving parts from beinginserted into fixed parts with different rated currents or whenthe circuit-breaker is closed.

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SACE Emax circuit-breakersoffer outstanding reliability interms of both mechanical andelectrical life. In the field of lowvoltage apparatus up to 5000A, represent the maximum in

terms of performance, whilewith regard to their structuralcharacteristics, their indicesallow a high level of sturdi-ness to be achieved.

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“Intelligent design”

Electrical installation designers choosing the new SACE Emaxcircuit-breakers can offer a vast range of solutions that enablethem to satisfy the specific demands of every user withoutobliging them to adapt their needs to the switchgear avail-able.

When looking through the detailed SACE Emax catalogue ofthe complete and highly specialized range, the versatility andpossibility of optimal sizing become immediately apparent. Therated current and breaking capacity levels have been studiedto ensure optimal sizing in all plant configurations.

The need to optimize the management of electrical installa-tions is increasingly being recognized today, particularly wherepower consumption, control, monitoring, diagnostics and, con-sequently, maintenance operations are concerned.

Benefiting from the know-how acquired with its other series ofcircuit-breakers, ABB SACE L.V. has specially designed andmanufactured a family of microprocessor-based trip units,called SACE PR111 and PR112, that are able to provide awide range of important dedicated functions for SACE Emaxcircuit-breakers.

The SACE PR112 trip unit, in particular, features a 16 bit micro-processor and 12 bit analogue to digital converter, making itsperformance even more accurate.

As a result, the work of specifiers and designers is consider-ably simplified when it comes to choosing the technical char-acteristics and performance required.

All this is thanks to the fact that the selection criteria are com-mon to several families of circuit-breakers and use intuitiveand easy-to-read codes and symbols.

The new circuit-breakers build on the successful experienceacquired with the SACE Isomax S family, continuing a traditionof switchgear designed and manufactured paying particularattention to use and user interface-related aspects, with obvi-ous advantages in terms of ergonomics, clarity and speed ofidentification.

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Compact switchboards

The need to build increasingly compactswitchboards to satisfy the architecturaland technical requirements of modernbuildings while simultaneously rationaliz-ing the related construction process is fullymet by the new SACE Emax circuit-break-ers which have a constant depth andheight from 800 through to 5000 A.

The new ABB SACE L.V. “power” circuit-breaker makes it possible to standardizethe support structures for the circuit-breakers, considerably facilitating con-struction of the switchboards them-selves.

The reduced width of the circuit-breakeroffers the benefit of more rational use ofthe space available and makes it possi-ble to build compact switchboards.

Moreover, the fact that a wide range ofterminals is available for the entire se-ries makes it possible to build switch-boards mounted against walls or switch-boards which can be accessed from be-hind with rear connections.

Fixed418 mm16.46 inches

Withdrawable461 mm18.15 inches

Fixed 302 mm / 11.89 inchesWithdrawable 396.5 mm / 15.61 inches

W Fixed Withdrawable

3 POL 3 POL

E1 - E2 296 mm / 11.65 inches 324 mm / 12.76 inches

E3 404 mm / 15.91 inches 432 mm / 17.01 inches



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Optimal warehouse management

A single range of accessories serves theentire SACE Emax series of circuit-break-ers. This standardization enables optimalwarehouse management while simultane-ously ensuring flexibility. Electrical dis-tributors and every customer who has tomanage maintenance and spare parts forlarge installations consequently benefitsfrom simpler warehouse management.

The ease with which accessories are in-stalled makes modular fitting operationsfast and safe, allowing even the end cus-tomer to carry out the customizing re-quired in each different phase of the lifeof an installation.

The designer’s job is made much easiersince the switchgear can be chosen wellin advance, preventing any overlappingwith the phase for finalizing the construc-tion details.

The current transformers for the differentrated currents of the trip units are verysimple to change, meaning the end cus-tomer can also carry out this operation.

SACE PR111 and PR112 microproces-sor-based trip units are, likewise, easyto change and are also interchangeable.

Moreover, conversion kits are availablefor the different terminal solutions and ver-sions of the circuit-breaker, allowing avery high level of warehouse rationaliza-tion.

The fixed parts for withdrawable circuit-breakers are common to each model, ir-respective of the rated current and break-ing capacity.

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Emax

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The new circuit-breakers have been de-veloped in an environment where qual-ity research has always been an over-riding commitment. A commitment thatinvolves every company function at ABBSACE L.V. and has made it possible to

A design dedicated to Qualityand respect for the environment

the most prestigious international certifi-cation bodies, and conforms to the ISO9001 Standard, while the ABB SACE L.V.test laboratory has been accredited bySINAL.

Commitment to care for the environmentis another priority at ABB, confirmed bythe fact that the ABB SACE L.V. Frosinonefactory’s environmental management sys-tem has been certified by RINA.

ABB SACE L.V., the first industrial com-pany in the electro-mechanical sector inItaly to obtain this, thanks to an ecology-centred revision of its manufacturingprocess, has been able to reduce its rawmaterial consumption and machiningscrap by 20%.

obtain prestigious international marks ofrecognition.

The Company Quality System has beencertified by RINA (Registro ItalianoNavale - Italian Naval Register), one of

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ABB SACE L.V.’s commitment to protect-ing the environment can also be seen inthe product Life Cycle Assessments(LCA) carried out in its Research Center.The materials, processes and packag-ing used are chosen with a view tooptimizing the real environmental impactof each product, including its energy ef-ficiency and recyclability.

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Standards, approvals, certificationsand company Quality System

SACE Emax Low Voltagepower circuit-breakers aredesigned and tested in ac-cordance with ANSI StandardC37.13, C37.16, C37.17 andC37.50 and are UL Listed inaccordance with UL1066.

SACE Emax power circuit-breakers UL Listed are alsosuitable for use in UL 1558Low Voltage Switchgears,UL891 Low Voltage switch-boards and CSA C22.2 no. 31Switchgear Assemblies.

All power circuit-breakersand their accessories arealso available with a range inaccordance with the Interna-tional Standards IEC 947-2,EN 60947 (harmonized in the17 CENELEC countries), CEIEN 60947, IEC 1000 and con-form to the relevant CE direc-tives:–“Low Voltage Directive”

(LVD) No. 73/23 EEC–“Electromagnetic Compa-

tibility Directive” (EMC) No.89/336 EEC.The apparatus complies with the specifications of the regula-

tions for on-board installations and is approved by the follow-ing Naval Registers:

– RINA (Italian Naval Register)

– Det Norske Veritas

– Bureau Veritas

– Germanischer Lloyd

– Loyd’s Register of Shipping

– Polskj Reiestr Statkow

The ABB SACE L.V. Quality System conforms to the InternationalStandard ISO 9001 (quality assurance model for design,development, manufacture, installation and service) and theequivalent European Standard EN ISO 9001 and ItalianStandard UNI EN ISO 9001.

The third party certifying body is RINA-QUACER.

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ISO 9001

Electrical specifications 16

Construction characteristics 18

Identification of circuit-breakers 24

Versions and connections 25

SACE PR111 and PR112 microprocessor-basedtrip units 26

Accessories 30

CONTENTS

Main characteristics

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E1 E2

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Electrical specifications

Specifications common to the entire rangeVoltagesRated maximum voltage 635 [V]Rated voltage 600 [V]Test voltage (1 min 50/60 Hz) 2,2 [kV]Frequency 50-60 [Hz]Number of poles 3Versions Fixed - Withdrawable

Type of circuit-breaker

Performance level B-A B-A N-A

Currents

Rated continuous current [A] 800 1600 1200

[A] 1200 1600

[A]

[A]

Rated short circuit current 240 V [kA] 42 42 65

480 V [kA] 42 42 50

600 V [kA] 35 42 50

Rated short time current [kA] 35 42 50

Trip units

PR111/P-A • • •

PR112/P-A • • •

Operation times

Make time (max) [ms] 80 80 80

Break time (I< ST current) (max) [ms] 70 70 70

Break time (I> ST current) (max) [ms] 30 30 30

Overall dimensions

Fixed: H= 418 mm / 16.46 in

D= 302 mm / 11.89 in

W (3 poles) [mm/in] 296/11.65 296/11.65

Withdrawable: H= 461 mm /18.15 in

D= 396,5 mm /15.61 inW (3 poles) [mm/in] 324/12.76 324/12.76

Weights (CB fitted with releases, RH terminals and CTs, accessories excluded)

Fixed 3 poles [Kg/Ibs] 42/93 46/101

Withdrawable 3 poles [Kg/Ibs] 65/143 72/159

E1 B-A E1B-A E2 B-A / N-A

Rated continuous current [A] 800 1200 1200 1600

Mechanical life [No. operations x 1000] 15 15 12 12

Frequency [Operations/hour] 30 30 30 30

Electrical life [No. operations x 1000] 10 10 10 10

Frequency [Operations/hour] 30 30 30 30

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N-A S-A H-A S-A H-A V-A H-A V-A

2000 1200 1200 3200 3200 3200 4000 4000

2500 1600 1600 3600 3600 3600 5000 5000

2000 2000

2500 2500

65 85 85 85 100 100 125 125

50 65 85 65 85 100 85 125

50 65 65 65 85 85 85 85

50 65 65 65 85 85 100 100

• • • • • • • •

• • • • • • • •

80 80 80 80 80 80 80 80

70 70 70 70 70 70 70 70

30 30 30 30 30 30 30 30

404/15.91 566/22.28 782/30.79

432/17.01 594/23.39 810/31.89

68/150 95/209 140/30

100/220 147/324 210/463

E 3 N-A / S-A / H-A E4S-A / H-A / V-A E6 H-A / V-A

1200 1600 2000 2500 3200 3600 4000 5000

10 10 10 10 5 5 5 5

30 30 30 30 30 30 30 30

10 10 8 8 5 5 5 3

30 30 30 30 30 30 30 30

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Construction characteristics

StructureThe structure of the circuit-breaker, whichis made out of sheet steel, is extremelycompact and allows the dimensions tobe significantly reduced.Safety is increased by adopting doubleinsulation for the live parts and total in-

sulation between the phases.The dimensions are characterized byhaving the same height and depth forall the circuit-breakers in each version.The depth of the withdrawable versionis suitable for installation in 500 mm /

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19.68 inches deep switchboards. Thewidth of 324 mm / 12.75 inches (up to1600 A) for the withdrawable version al-lows the switchgear to be used in switch-board compartments 400 mm / 15.74inches wide.

These compact dimensions also allowthem to replace any models of power cir-cuit-breakers from earlier series.

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1 Sheet steel supporting structure

2 Current transformer for protection release

3 Pole group insulating box

4 Horizontal rear terminals

5a Plates for fixed main contacts

5b Plates for fixed arc-breaking contacts

6a Plates for moving main contacts

6b Plates for moving arc-breaking contacts

7 Arcing chamber

8 Terminal box for fixed version - Sliding contacts forwithdrawable version

9 Protection release

10 Closing and opening control of circuit-breaker

11 Closing springs

Selective circuit-breakerE1 B-A, E2 B/N-A, E3 N/S/H-A, E4 S/H/VE1 B-A, E2 B/N-A, E3 N/S/H-A, E4 S/H/VE1 B-A, E2 B/N-A, E3 N/S/H-A, E4 S/H/VE1 B-A, E2 B/N-A, E3 N/S/H-A, E4 S/H/VE1 B-A, E2 B/N-A, E3 N/S/H-A, E4 S/H/V-A, E6 H/V-A, E6 H/V-A, E6 H/V-A, E6 H/V-A, E6 H/V-A-A-A-A-A

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Fixed parts ofwithdrawablecircuit-breakersThe fixed parts of withdraw-able circuit-breakers haveshutters for isolating the fixedcontacts when the circuit-breaker is withdrawn from thecompartment.These can be locked in theirclosed position using pad-lock devices.

1 Sheet steel supportingstructure

2 Single grounding pliersmounted on the left for E1,E2 and E3, doublegrounding pliers for E4 andE6.

3 Safety shutters (degree ofprotection IP20)

4 Terminal supportinginsulating base

5 Terminals

6 Contacts signallingconnected, isolated,isolated for test (to order)

7 Sliding contacts

8 Padlock device for safetyshutters (to order)

9 Fixing points (4 for E1, E2,E3 and 6 for E4, E6)

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Operating mechanismThe operating mechanism is of the stored energy type, oper-ated using pre-charged springs.

The springs are charged manually by operating the frontlever or using a motor operator, supplied on request.

The opening springs are charged automatically during the clos-ing operation.

With the operating mechanism fitted with shunt closing andopening releases and the motor operator for charging thesprings, the circuit-breaker can be operated by remote con-trol and, if required, co-ordinated by a supervision and controlsystem.

The following operating cycles are possible without recharg-ing the springs:

– starting with the circuit-breaker open and the springscharged: closing-opening

– starting with the circuit-breaker closed and the springscharged: opening-closing-opening.

The same operating mechanism is used for the entire seriesand is fitted with a mechanical and electrical anti-pumpingdevice.


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1 Trade-mark and model of circuit-breakers

2 SACE PR111 or PR112 release

3 Pushbutton for manual openingoperation

4 Pushbutton for manual closingoperation

5 Lever for manual closing springcharging

6 Electrical rating plate

7 Mechanical signalling device for circuit-breaker open “O” and closed “I”

8 Signal for springs charged ordischarged

9 Mechanical signal for protectionrelease tripped

10 Operation counter

11 Key lock in open position

12 Key lock and padlock in isolated-withdrawn position

13 Devices for the racking-in/racking-outoperations

14 Terminal box (only for fixed version)

15 Sliding contacts (only for withdrawableversion)

Operating and signallingparts

Fixed version

Withdrawable version

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B - A

N - A

S - A

H - A

V- A

800 A

1200 A

1600 A

2000 A

2500 A

3200 A

3600 A

4000 A

5000 A

08

12

16

20

25

32

36

40

50

EE42 kA

50 kA

65 kA

85 kA

100-125 kA

Identification of circuit-breakers

Where the dimensions of the circuit-breakers are concerned,they are divided into four sizes, each with the same externaldimensions. There is one model in each size, with the excep-tion of size 1, which has two models with different electricalspecifications (E1 and E2).

The circuit-breakers are identified using the following code:

Series Model Rated ultimate short-circuitbreaking capacity (480V a.c.)

Rated uninterruptedcurrent

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0006

GS

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0007

GS

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0009

GS

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0010

HORIZONTAL REARTERMINALS

VERTICAL REARTERMINALS

Versions and connections

All the circuit-breakers are available in fixed and withdrawablethree-pole version.

Each model of circuit-breaker has terminals made of silver-plated copper bars which have the same dimensions irrespec-tive of the rated currents of the circuit-breakers (except forE3).

The fixed parts of each model of withdrawable circuit-break-ers are the same for every rated current and breaking capac-ity of the related moving parts (except for E3).

The fact that different types of terminals are available makes itpossible to build switchboards that can be mounted againstwalls or accessed from the rear with rear connections.

The circuit-breakers can be fitted with different combinationsof top and bottom terminals to meet special installation needs.

HORIZONTAL REARTERMINALS

VERTICAL REARTERMINALS

WITHDRAWABLE C.BREAKERSFIXED CIRCUIT-BREAKERS

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SACE PR111 and PR112 microprocessor-basedtrip units

The overcurrent protection for alternat-ing current installations is provided bytwo types of microprocessor-based tripunits in the SACE PR111 and PR112 se-ries which can be installed as alterna-tives on SACE Emax circuit-breakers:

• SACE PR111 with protection functionsonly

• SACE PR112 with protection, currentmeasuring and signalling functions

The protection units can be three-phaseor three-phase with external neutral de-pending on the type of circuit-breakerused.

The protection unit comprises:

• 3 current transformers (CTs) (the fourthmay be external)

• one protection unit which can be ei-ther a SACE PR111/P-A or PR112/P-A

• an opening solenoid which acts di-rectly on the circuit-breaker operatingmechanism (always supplied with theprotection unit).

The main characteristics of these micro-processor-based trip units are:

• operation without the need for an ex-ternal power supply

• microprocessor technology (8 bit forSACE PR111 and 16 bit for SACEPR112)

• high precision

• sensitive to the true r.m.s. value of thecurrent

• external neutral normally set to 50% ofthe setting for the phases, with the pos-sibility of setting it to 100% (to order onE1, E2, E3).

The main performances which distinguishthe trip units are indicated in the followingtable.

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SACE PR111

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SACE PR112

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Protection functions

Self-test

Measurements

Data storage

User interface

Zone selectivity

Overload protection with inverselong time-delay trip

Selective short-circuit protection with inverseor definite short time-delay trip

Instantaneous short-circuit protection withadjustable trip current setting

Residual

Source ground return

Thermal memory for functions L and S

Currents (in phases, in neutral, of ground fault)

Counting of number of operations and contact wear

Alarm and release due to trip units temperature rise

Alarm due to microprocessor fault

Parameters set using DIP switches

Parameters set using keys and liquid crystal display

Alarm signals for functions L and S

Complete management of pre-alarms and alarms forall protection and self-monitoring functions

Enabling key for use in “READ” (consultation) or “EDIT”(consultation and setting) mode

Can be activated for protection functions S and G

Ground fault protection

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Versions available

Trip unit

SACE PR111PR111/P-A PR111/P-A PR111/P-A

SACE PR112PR112/P-A PR112/P-A

SACE PR111 and PR112 microprocessor-basedtrip units

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E1B-A 800 A

1200 A

E2B-A 1600 A

E2N-A 1200 A

1600 A

E3N-A 2000 A

2500 A

E3S-A 1200 A

1600 A

2000 A

2500 A

E3H-A 1200 A

1600 A

2000 A

2500 A

E4S-A 3200 A

3600 A

E4H-A 3200 A

3600 A

E4V-A 3200 A

3600 A

E6H-A 4000 A

5000 A

E6V-A 4000 A

5000 A

CURRENT TRANSFORMER SETTINGS (Rated current)

Type R250 R400 R800 R1000 R1200 R1600 R2000 R2500 R3200 R3600 R4000 R5000Rated

current

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Accessories

Version Fixed Withdrawable

Shunt opening/closing release

SOR Test Unit

Undervoltage release

Delay device for undervoltage release

Geared motor for automatic chargingof closing springs

Mechanical signalof overcurrent releases

Mechanical and electrical signalof overcurrent releases tripped

Electrical signal for circuit-breakeropen/closed

Electrical signal for circuit-breakerconnected/isolated for test/isolated

Contact for signallingclosing springs charged

Contact for signallingundervoltage release energised

Current transformer for the circuit-breakerexternal neutral conductor

Homopolar toroid for the earthing conductorof the main power supply

Terminal box for fixed version circuit-breaker

Sliding contacts for withdrawableversion circuit-breaker

Mechanical operation counter

Key lock or padlock devices in open position

Arrangement for key lock in open positionwith Kirk lock

Circuit-breaker lock in connected / isolatedfor test / isolated position

Anti-insertion lock for circuit-breakersof different models

Padlock devices for fixed part shutters

Compartment door mechanical lock

Protection for opening andclosing pushbuttons

IP54 door protection (NEMA 3/3S/13)

Interlock between circuit-breakers

Lifting plate

Racking out crank handle

Flange for compartment door

= accessory supplied as standard= optional

E1 … E6

Circuit-breaker

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Installation in switchboards 32

Derating in altitude 36

CONTENTS


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Modular designThe circuit-breakers in the SACE Emax series have been madefollowing modular design criteria to facilitate their installationand integration in L.V. electrical switchboards, giving them thesame depth and height for every model while simultaneouslyachieving a significant reduction in their overall installation di-mensions.

Furthermore, the front metal shield of the circuit-breaker is iden-tical for the entire series. This simplifies the construction of theswitchboard doors since only one type of drilling is requiredand makes the front of the switchboard the same for all sizes.

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L1 L2 L3PEN

SA

CE

PR

111-

PR

112

L1 L2 L3PE

SA

CE

PR

111-

PR

112

N L1 L2 L3PE

SA

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PR

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PR

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Choosing the type of circuit-breakerNumber of poles

The choice of the number of poles for circuit-breakers whichsimultaneously provide switching, protection and isolation func-

For users that do not use theneutral (e.g.: asynchronousmotors) and, generally, forlines without neutral (non-dis-tributed neutral).

Current transformers can beinstalled on the externalneutral of five-wire systems(TN-S) with 3-pole circuit-breakers

THREE-POLE CIRCUIT-BREAKERS WITH EXTERNALNEUTRAL

Fixed or withdrawableversion

The fixed version of the cir-cuit-breaker has more com-pact dimensions than thewithdrawable version. It isrecommended for installa-tions that can tolerate serv-ice interruptions in the eventof faults or routine mainte-nance.

The withdrawable version ofthe circuit-breaker is recom-mended for:

– applications that can onlytolerate brief interruptionsdue to faults or routinemaintenance:

– dual lines, one of which isa standby for the other, witha single circuit-breaker foreach pair.

For TN-C systems (interrup-tion of the neutral is not ad-missible because it also actsas the protection conductor).

tions in three phase installations depends on the type of elec-trical system (TN-S, TN-C, IT) and the type of user or, moregenerally, whether it features a distributed or non-distributedneutral.

THREE-POLECIRCUIT-BREAKERS

34

AS

EM

0031

AS

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0032

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53

Horizontal rear terminals - For switch-boards with access from the rear

Vertical rear terminals - For switch-boards with access from the rear

Connecting the main circuit-breaker circuits

When designing switchboards, one mustalways bear in mind the problem of mak-ing the connections between the circuit-breaker and main busbar system and the“feeder circuit”. The SACE Emax seriesoffers switchboard experts a range of op-tions to satisfy different circuit-breakerconnection requirements.

The figures at the side show a number ofindications for terminal selection.


Degrees of protectionA number of solutions have beenadopted on SACE Emax circuit-break-ers to achieve degree of protection IP22for fixed or withdrawable circuit-break-ers excluding their terminals, and IP30for their front parts using a flange. Auto-matic shutters have been designed forthe fixed parts of withdrawable circuit-breakers which can be locked usingpadlock devices to allow maintenanceof the load side or power-supply side ofthe fixed part.

In addition, a transparent protectivecover is available on request, whichcompletely segregates the front part ofthe circuit-breaker, taking the degree ofprotection to IP54 (NEMA 3/3S/13) whilestill leaving the front panel and protec-tion trip unit with its related indicationsfully visible.

IP22 Fixed or withdrawable circuit-breaker, excluding terminals.

IP30 Front parts of circuit-breakers (us-ing flange).

IP54 Fixed or withdrawable circuit-breaker fitted with transparent pro-tective cover to be fixed on the frontof the switchboard (on request).

35

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42

Power loss

C.-breaker Rated current Fixed Withdrawable

3 Pole 3 Pole

[A] [W] [W]

E1 B-A 800 65 95

1200 146 214

E2 B-A 1600 115 215

E2 N-A 1200 65 121

1600 115 215

E3 N-A 2000 130 225

2500 205 350

E3 S-A 1200 48 84

1600 85 150

2000 130 225

2500 205 350

E3 H-A 1200 48 84

1600 85 150

2000 130 225

2500 205 350

E4 S-A 3200 235 425

3600 297 538

E4 H-A 3200 235 425

3600 297 538

E4 V-A 3200 235 425

3600 297 538

E6 H-A 4000 265 445

7000 415 700

E6 H-A 4000 265 445

7000 415 700

Power loss

The following table gives information about power losses offixed and withdrawable circuit-breakers.

36

Altitude [ft] [m] <6600 (2000) 9900 (3000) 13200 (4000) 16500 (5000)

Rated service voltage [V] 600 600 500 440

Rated current [A] In 0.98 x In 0.93 x In 0.90 x In

Up to a height of 2000 metres, the SACE Emax air circuit-breakers do not undergo any changes in their rated perform-ance. As the altitude increases their atmospheric propertiesalter in terms of composition, dielectric capacity, cooling powerand pressure.

The performance of the circuit-breakers therefore undergoes

Altitude derating

derating which can basically be measured by means of thevariation in significant parameters such as the maximum ratedvoltage of operation and the rated uninterrupted current.

The table below shows the above-mentioned values in relationto the altitude.

37

Overcurrent protection with SACE PR111microprocessor-based trip units 38

Trip curves of circuit-breakers withSACE PR111 trip units 42

Overcurrent protection with SACE PR112microprocessor-based trip units 44

Trip curves of circuit-breaker withSACE PR112 trip units 48

SACE PR010/T test and configuration unit 52

CONTENTS

Overcurrent trip units and relativeaccessories

38

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65

5 114 9 14 18 17 1910

31 2 6 7 8 12 13 15 16 20

SACE PR111 trip unitsThis is the basic trip unit for the SACE Emax series. The com-plete range of protection functions and the variety of thresh-olds and trip times offered make it suitable for protecting any

Overcurrent protection with SACE PR111microprocessor-based trip units

Caption

1 Alarm signal LED for protection function L

2 DIP switches for setting current threshold I1

3 Indication of the DIP switch positions for the values of currentthresholds I1

4 DIP switches for setting trip time t1 (type of curve)

5 Indication of the DIP switch positions for the time settings

6 Alarm signal LED for protection function S




10 DIP switches for setting inverse time or definite timecharacteristic

11 Indication of DIP switch positions for time settings



14 Rating plate showing the rated current of the neutral CT and thetrip unit serial number




18 Indication of DIP switch positions for time settings

19 Symbol diagram showing operation of function G

20 Connection module with external units for testing the trip unit andsocket for connection to the trip test (SACE TT1 unit and SACEPR010/T unit)

type of alternating current installation. The trip unit does nothave any additional functions over and above its protectionfunctions except some number signals.

39

t = K

GS

EM

0064

GS

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0065

t =K

I2

Operation and protection functions

Power supply

The trip unit does not require an external power supply, beingself-powered using the current transformers installed on thecircuit-breaker. Operation requires at least one phase to beloaded at 20% of the rated current of the current transformers(In).

Protection functionsThe SACE PR111 trip unit offers the following protection func-tions:

• overload (L)

• selective short-circuit (S)

• instantaneous short-circuit (I)

• ground fault (G).

See the following section for the range of settings available.

Overload (L)The inverse long time-delay trip overload protection L is of thetype I2t = k. Eight current thresholds and 4 curves indicated bythe letters A, B, C, D are available. Each curve is identified bythe trip time in relation to the current I = 6 x I1 (I1 = thresholdset).

Selective short-circuit (S)

The inverse short time-delay trip or definite short time-delaytrip short-circuit protection S can be set with two different typesof curves with a trip time that is independent of the current (t =k) or with a constant specific let-through energy (t = k/I2).

Seven current thresholds and 4 curves indicated by the lettersA, B, C, D are available. Each curve is identified as follows:

– for curves (t = k) by the trip time for I > I2

– for curves t = k/I2 by the trip time for I = 8 x In (In = ratedcurrent of the current transformer).

The function can be excluded by setting the DIP switches tothe combination indicated by “OFF”.

Adjustable instantaneous short-circuit (I)

Protection function I offers seven tripping thresholds and canbe excluded (“OFF” position of the DIP switches).

Ground fault (G)The inverse short time-delay trip ground fault protection G(which can be excluded) offers seven current thresholds and4 curves indicated by the letters A, B, C, D. Each curve isidentified by the time t4 in relation to current I4 as shown in thediagram on the front of the release (detail 19 on page 38).

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max

0470

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71E

max

0413

Overcurrent protection with SACEPR111microprocessor-based trip units

Interface with theuserThe user communicates withthe trip unit in the trip param-eter preparation stage bymeans of the dip switchesdescribed in the previousparagraph.

Two LEDs (detail 1 and 6 onpage 38) are also availablefor alarm signalling (start oftiming) for the L and S func-tions respectively.

Setting neutralProtection of the neutral isavailable at 50% in the stand-ard version or at 100% (ver-sion which can be suppliedon request for E1-E2-E3) ofthe rated current and of thephases.

Test functionThe Test function is carriedout by means of the pocket-sized SACE TT1 Trip Test unit,fitted with a two-pole polar-ized connector housed onthe bottom of the box, whichallows the device to be con-nected to the TEST inputsocket on the front of SACEPR111 trip unit.

The SACE TT1 unit allows theSACE PR111 trip unit to bechecked and the openingsolenoid trip test.

The device is supplied bymeans of a 12V replaceablebattery.

A complete test of the SACEPR111 microprocessor-based trip unit can be carriedout using the special SACEPR010/T apparatus by apply-ing it to the TEST connector.

All the trip unit functions canbe checked by means of thisunit.

Versions availableThe versions available are asfollows:

41

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5

Function Current thresholds Trip time Can be excluded Relationt = f (I)

Overload I1 = 0.4 x In With current NO t = k/I2

protection 0.5 x In I = 6 x I1:0.6 x In t1 = 3 s (curve A)0.7 x In 6 s (curve B)0.8 x In 12 s (curve C)0.9 x In 18 s (curve D)0.95 x In1 x In

Selective I2 = 1 x In With current YES t = k/I2 (time-current curves I2t ON)short-circuit 2 x In I = 8 x Inprotection 3 x In t2 = 0.05 s (curve A)

4 x In 0.10 s (curve B)6 x In 0.25 s (curve C)8 x In 0.40 s (curve D)10 x In

I2 = 1 x In With current YES t = k (time-current curves I2t OFF)2 x In I > I23 x In t2 = 0.05 s (curve A)4 x In 0.10 s (curve B)6 x In 0.25 s (curve C)8 x In 0.40 s (curve D)10 x In

Instantaneous I3 = 1.5 x In Instantaneous YES t = kshort-circuit 2 x In tripprotection 4 x In

6 x In8 x In10 x In12 x In

Ground I4 = 0.20 x In With current YES t = k/I2

fault 0.25 x In I = 4 x I4protection 0.30 x In t4 = 0.1 s (curve A)

0.35 x In 0.2 s (curve B)0.40 x In 0.3 s (curve C)0.45 x In 0.4 s (curve D)0.48 x In

Protection functions and setting values of the SACE PR111/P-A trip unit

42

1’

2’

5’

10’

20’

30’

0.01

0.02

0.04

0.06

0.1

0.2

0.4

0.6

1

2

4

6

10

20

40

60

102

2

4

6

103

20

3 4 5 6 7 8 9 10 12 15 20 250.2 0.3 0.4 0.5 0.6 0.7 0.80.91 21.2 1.50.1

D

C

B

A

0.70.6

0.5 0.8

0.4

1

A

B

C

D

0.9

0.95

1.5 2 4 6 8 10 12

1’

2’

5’

10’

20’

30’

0.01

0.02

0.04

0.06

0.1

0.2

0.4

0.6

1

2

4

6

10

20

40

60

102

2

4

6

103

20

3 4 5 6 7 8 9 10 12 15 20 250.2 0.3 0.4 0.5 0.6 0.7 0.80.91 21.2 1.50.1

I2t

ON

0.9

0.95

1.5 2 4 6 8 10 12

D

C

B

A

0.70.6

0.5 0.8

0.4

1

A

B

C

D

1

2 3 4 6 8

D

C

B

A

t = KI2

10

GS

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0106

bG

SE

M01

07b

Trip curves of circuit-breakers with SACE PR111 releases

43

1’

2’

5’

10’

20’

30’

0.01

0.02

0.04

0.06

0.1

0.2

0.4

0.6

1

2

4

6

10

20

40

60

102

2

4

6

103

20

3 4 5 6 7 8 9 10 12 15 20 250.2 0.3 0.4 0.5 0.6 0.7 0.80.91 21.2 1.50.1

DC

B

A

0.250.2 0.35

0.3 0.4

0.45

0.48

1’

2’

5’

10’

20’

30’

0.01

0.02

0.04

0.06

0.1

0.2

0.4

0.6

1

2

4

6

10

20

40

60

102

2

4

6

103

20

3 4 5 6 7 8 9 10 12 15 20 250.2 0.3 0.4 0.5 0.6 0.7 0.80.91 21.2 1.50.1

I

OFF

D

C

B

A

0.70.6

0.5 0.8

0.4

1

A

B

C

D

1

2 3 4 6 8 10

D

C

B

A

t = K

0.9

0.95

1.5 2 4 6 8 10 12

GS

EM

0010

8bG

SE

M01

09b

44

Em

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66a

7 6 4 1

98 10 1311 12

35 2


SACE PR112 trip unitThe SACE PR112 trip unit is a sophisticated protection systemusing microprocessor technology.

The wide range of settings makes this protection unit ideal forgeneral use in any type of installation.

Consulting information and programming is extremely easy us-ing a keyboard and alphanumeric liquid crystal display.

An ammeter function and many additional functions are pro-vided over and above the protection functions.

Caption

1 Programming keys (for selecting parameters)

2 Liquid crystal display

3 Rating plate indicating the rated current of the CT and neutralplus the trip unit serial number

4 Test pushbutton (TEST)

5 Magnetic signalling devices showing protection functionsL, S, I, G tripped

6 Magnetic signalling device showing excessive trip unit casetemperature rise (second threshold)

7 Key for resetting the magnetic signalling devices and protectiondevice tripped signalling contact (RESET)

8 Key-operated selector switch for choosing read only mode(READ) or setting mode (EDIT) for the parameters

9 Microprocessor fault LED signalling device

10 Auxiliary power supply LED signalling device

11 Pre-alarm signalling device (dedicated message on display)

12 Alarm signalling device (dedicated message on display)

13 Connector for connecting to external units such asSACE PR110/B and SACE PR010/T (additional functions).

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0074

t

I

t

I

t =K

I2

t = K

t =K

I2

t = K

Operation, protection functions and self-test

All the thresholds and trip curve delays of the protection func-tions are stored in special memories which retain the informa-tion even if no power is supplied.

Protection functionsThe SACE PR112 trip unit offers the following protection func-tions:

• overload (L)

• selective short-circuit (S)

• instantaneous short-circuit (I)

• ground fault (G). (Residual or Source ground return) bymeans of a toroid installed on the earthing connection of themain power supply.

• self-protection against excessive temperature rises.

Neutral adjustment

The external neutral protection is 50% of the value set for thephase protection in the standard version. A version with theneutral protection set to 100% is available on request (for E1,E2 and E3 only).

Power supply

The SACE PR112 trip unit does not normally require any exter-nal power supplies, being self-powered from the current trans-formers (CT). For the protection and ammeter functions to op-erate, at least one phase to have a current load equivalent to35% of the rated current of the CTs (20% in cases where twophases are powered). The unit ensures full operation with self-powering, but by supplying 24 Vdc + 20% auxiliary powersupply the unit can also be used with the circuit-breaker openor with the circuit-breaker closed, but with a single-phase cur-rent load of less than 35% of the rated current of the CTs.

It is also possible to use an auxiliary power supply providedby the PR110/B portable battery unit (always supplied) whichallows the protection functions to be set when the circuit-breaker is not self-powered.

A wide range of setting options is available for the thresholdsand trip times of all the functions.

Functions S and G can operate with a time delay that is inde-pendent of the current (t = k) or with an inverse time delay(constant specific let-through energy: I2t = k), as required.

Protection against ground faults can also be obtained by con-necting the SACE PR112 to an external toroid located on theconductor which connects the transformer star centre to earth(homopolar toroid).

46

Min

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6a


Function Limit Threshold Trip time Can be Relation Thermal Zonevalues steps adjustment (s) excluded t = f (I) memory selectivity

Overload I1 = 0,01xIn (With current I = 3xI1) NO t = k/I2 YES (can be NOprotection 0,4…1,0 x In t1 = from 3 to 144 s excluded)

with step 3 s

Selective I2 = 0,1 x In t2 = 0,0 et from 0,05 YES t = k NO YES (can be

short-circuit 0,6…10 x In to 0,4 s excluded)

protection with step 0,01

I2 = 0,1 x In (With current I=10xIn) YES t = k/I2 YES (can be NO0,6…10 x In I = 10 x In excluded)

t2 = from 0,05 to 0,4 swith step 0,01

Instantaneous I3 = 0,1 x In Instantaneous YES t = k NO NOshort-circuit 1,5…15,0 x In tripprotection

Ground I4 = 0,02 x In t4 = from 0,1 to 0,4 s YES t = k NO YES (can be

fault 0,2…1,0 x In with step 0,05 s excluded)

protection (max 1200A)

I4 = 0,02 x In t4 = from 0,1 to 0,4 s YES t = k/I2 NO NO0,2…1,0 x In with step 0,05 s(max 1200A)

Protection functions and setting values of the SACE PR112/P-A trip unit

47

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54x

134

In case of a temporary or continuous malfunction, the follow-ing two signals are activated:

– lighting up of the “µP Fault”

– when there is auxiliary power supply, closure of the “µP Fault”contact.

Test functionsFollowing enabling on the “control” menu, the “TEST”pushbutton on the front of the release (detail 4) allows correctoperation of the chain consisting of the microprocessor, open-ing solenoid and circuit-breaker to be checked.

Within the control menu there is also the possibility of testingcorrect operation of the display, signalling LEDs, magnetic sig-nals and electrical contacts supplied in all the versions of thePR112 trip unit.

By means of the front multi-pin connector (indicated by number13), it is possible to apply a Test unit called SACE PR010/Twhich allows the functions of the SACE PR112 and PR111 tripunits to be tested and checked.

Protection against excessive temperature

The range of SACE PR112 trip units allows the presence ofabnormal temperatures which could cause temporary or con-tinuous malfunctions of the microprocessor to be signalled tothe user.

The user has the following signals or commands available:

– lighting up of the “Warning” LED when the temperature ishigher than 70 °C (temperature at which the microprocessoris still able to operate correctly)

– lighting up of the “Emergency” LED when the temperatureis higher than 85 °C (temperature above which the micro-processor can no longer guarantee correct operation) and,when decided during the unit configuration stage, simulta-neous opening of the circuit-breaker with change-over ofthe relative magnetic signal.

Microprocessor self-diagnosis

The range of SACE PR112 trip units contains an electroniccircuit which checks operation of the microprocessor of theprotection unit in real time.

48

1’

2’

5’

10’

20’

30’

0.01

0.02

0.04

0.06

0.1

0.2

0.4

20

0.6

1

2

4

6

10

20

40

60

102

2

4

6

103

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.80.91 21.2 1.5 3 4 5 6 7 8 9 10 12 15 20

t=k/I2

1.5 2 3 4 5 6 7 1080.4 0.6 1

2 3 4 5 6 7 8 10 12 151.5

1’

2’

5’

10’

20’

30’

0.01

0.02

0.04

0.06

0.1

0.2

0.4

20

0.6

1

2

4

6

10

20

40

60

102

2

4

6

103

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.80.91 21.2 1.5 3 4 5 6 7 8 9 10 12 15 20

0.4 1

2 3 4 5 6 7 8 10 12 151.5

1

t = k

1.5 2 3 4 5 6 7 1080.6

GS

EM

0111

bG

SE

M00

110b

Trip curves of circuit-breakers with SACE PR112 trip unit

49

1’

2’

5’

10’

20’

30’

0.01

0.02

0.04

0.06

0.1

0.2

0.4

20

0.6

1

2

4

6

10

20

40

60

102

2

4

6

103

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.80.91 21.2 1.5 3 4 5 6 7 8 9 10 12 15 20

t=k/I2

t = k

0.2 0.3 0.4 0.5 0.7 1

0.70.50.40.30.2 1

GS

EM

0011

2b

50

Em

ax03

50

7

9 10


A further two LEDs (9, 10) signal the following:

– “µP Fault”: indicates that the protection unit microprocessorhas a temporary (lit for a limited time) or permanent (lit for anunlimited time) fault

– “Vaux”: indicates there is an auxiliary power supply

Electrical signalling contactsThree clean contacts provided on all versions of the SACEPR112 trip unit enable electrical signalling of the following:

– (5 A / 240 V ac) overload alarm (I1>80%);

– (0.5 A / 125 V ac) relay tripped (closes following tripping ofany of the protection functions - L, S, I, G and excessivetemperature rise);

– microprocessor fault (can be used to directly close the cir-cuit which powers the circuit-breaker shunt opening release).

Note:The overload and microprocessor fault contacts to the microcontroller areavailable with an external auxiliary power supply.

User interfaceFour pushbuttons and an enabling key with two positions(“READ” and “EDIT”) are used to consult the information avail-able and the parameters set in the memory of the SACE PR112(“READ” mode) or to program and configure the unit (“EDIT”mode) - all the choices are made using step-by-step menus.

Indication LEDsTwo LEDs on the front panel of the trip unit are used to indicatepre-alarms (“WARNING”) and alarms (“ALARM”). A messageon the display always explicitly indicates the type of eventconcerned.

Events indicated by the “WARNING” LED:

– unbalance between phases;– pre-alarm for overload (I1> 80%);

– first temperature threshold exceeded (70°C);

– distorted waveform;– zone selectivity enabled and no Vaux;

– contact wear exceeds 80%.

Events indicated by “EMERGENCY” LED:

– overload (I> I1), function L under timing;– function S under timing;

– function G under timing;

– second temperature threshold exceeded (85°C);– contact wear 100%.

51

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Resetting trip signals

The “RESET” pushbutton (detail 7) allows local resetting of theprotection trip signals (relay tripped contact and magneticflags).

Measuring function

The current measuring function (ammeter) is present on allversions of the SACE PR112 unit.

The display shows the currents of the three phases, of the neu-tral and of the earth fault.

The latter current value takes on two different meanings de-pending on whether the external toroidal transformer for the“Source Ground Return” function or the internal transformer(residual type) is connected.

The ammeter can operate either with self-supply or with auxil-iary power supply voltage.

Accuracy of the ammeter measuring chain (current transformerplus ammeter) in the 30% - 120% current is + 5%.

Versions available

• PR112/P-A (LSI)

• PR112/P-A (LSIG)

SACE PR110/B power supply accessory

This accessory – always supplied with the range of SACEPR112 trip units – makes it possible to read and configure theparameters of the unit whatever the state of the circuit-breaker(open-closed, in the test or connected position, with/withoutauxiliary power supply).

Inside it there is an electronic circuit which allows power sup-ply to the unit for about 3 hours continuously to carry out justthe readout and data configuration operations.

The battery life decreases proportionally to use if the PR110/Baccessory is also used to carry out the “COMMAND” menufunctions (Trip test, Auto test).

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SACE PR010/TTest and Configuration Unit

The SACE PR010/T unit is an instrument able to carry out theTest, programming and parameter readout functions for theprotection units which are fitted with SACE Emax low voltagepower circuit-breakers.

In particular, the Test function regards the following units:

– SACE PR112 (in all versions)

– SACE PR111 (in all versions)

whereas the programming and parameter readout functionsregard the SACE PR112 range of trip units.

All the functions mentioned can be carried out ON BOARD byconnecting the SACE PR010/T unit to the front multi-pin con-nector on the various protection units. Connection is ensuredby special interfacing cables supplied as standard with theunit.

The man-machine interface is ensured by the use of a mem-brane keyboard and a multi-line alphanumerical display.

There are also two LEDs on the unit which signal the followingrespectively:

– POWER-ON and STAND BY situation

– state of battery charge

Two different types of Test are provided: automatic and manual.

By means of connection to a PC (with diskette supplied byABB SACE), it is also possible to up-grade the SACE PR010/Tunit software to adapt the Test unit as new products evolve.

It is also possible to memorize the most important results ofthe test in the unit itself and to send them to the Personal Com-puter on a specific request for “issue of report”.

In automatic mode (operation allowed with the SACE PR112range), the SACE PR010/T unit can test the following:

– L, S, I protection functions;

– G protection function with internal transformer;

– G protection function with the toroid placed on the star cen-tre of the transformer;

– monitoring of correct microprocessor operation.

The same tests can be repeated manually for both the SACEPR111 and SACE PR112 ranges of trip units.

The SACE PR010/T unit is portable, operates with recharge-able batteries and/or with an external feeder (always provided)with 100-240 Vac / 12 Vdc rated voltage

The SACE PR010/T unit includes the following in the standardsupply:

– SACE PR010/T Test unit complete with rechargeable batter-ies

– SACE TT1 Test unit

– external 100 – 240 Vac/12 Vdc feeder

– connection cables between the unit and the multi-pin con-nector on the range of trip units which equip the SACE Emaxseries

– connection cable between the unit and the PC (RS232 se-rial)

– power supply cable

– instruction manual and diskette with application software

– plastic container.

53

Circuit-breaker and fixed part accessories 54

Spare parts 67

CONTENTS

Accessories

54

The table below shows some functions which can be obtainedby making a suitable selection of the accessories provided.Several of the functions listed may be needed at the same

Circuit-breaker and fixed part accessories

time depending on the use of the circuit-breaker.See the related section for a detailed description of the indi-vidual accessories.

Remote control ••••• Shunt opening release

••••• Shunt closing release

••••• Geared motor for automatic charging of closing springs

Remote signalling or actuation of automatic functions ••••• Auxiliary contacts of circuit-breaker open / closeddepending on the state (open / closed) or isolated,or on the position (connected / isolated) of the circuit-breaker ••••• Auxiliary contacts of circuit-breaker connected, isolated

for test (for withdrawable circuit-breakers only)

••••• Contact for electrical signalling of overcurrent trip unitstripped

••••• Contact for signalling undervoltage de-energised

••••• Contact for signalling springs charged

Remote opening for various needs, including: ••••• Shunt opening or undervoltage release– manual emergency operation– opening interlocked with operation of other switchgear or

with plant automation requirements.

Examples– circuit-breakers on L.V. side of transformers in parallel

that must open automatically when the M.V. side deviceopens

– automatic opening controlled by external relay(undervoltage, residual-current, etc.)

Automatic opening of circuit-breaker due to undervoltage ••••• Instantaneous or time delay voltage release(as in the case, for example, of operation of asynchronous N.B. The time-delay device is recommended whenmotors) unwarranted operation due to temporary voltage drops,

is to be avoided (for functional or safety reasons).

••••• Contact for signalling undervoltage energised

Increase in degree of protection ••••• IP54 protective cover for door

Mechanical safety locks for maintenance or functional ••••• Key lock in open positionrequirements for interlocking two or more circuit-breakers

••••• Padlock device in open position

••••• Key lock and padlock device in connected, isolated for test,isolated position

Automatic switching of power supplies ••••• Mechanical interlock between two or three circuit-breakers

ComponentsFunction

55

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50

Fixed circuit-breakers:– flange for switchboard compartment door (IP30)

– support for service releases

– four auxiliary contacts for electrical signalling of circuit-breaker open/closed (for circuit-breakers only)

– terminal box for connecting outgoing auxiliaries

– horizontal rear terminals

– lifting plate

Withdrawable circuit-breakers:– flange for switchboard compartment door

– support for service releases

– four auxiliary contacts for electrical signalling of circuit-breaker open/closed (for circuit-breakers only)

– sliding contacts for connecting outgoing auxiliaries

– horizontal rear terminals

– anti-insertion lock for circuit-breakers with different ratedcurrents

– racking-out crank handle

– lifting plate

– device against racking-out with charged springs (Fail Safe)

Accessories supplied as standard

The following standard accessories are supplied depending on the circuit-breaker version:

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(*) For automatic circuit-breakersfour auxiliary contacts for elec-trical signalling of circuit-breaker open/closed is in-cluded in the supply as stand-ard.

CAPTION:

= Accessory on requeston fixed or on movingpart

= accessory on requestfor fixed part

= accessory on requestfor moving part

Compatibility table for accessories and different versions

E1 … E6

Accessories Circuit-breaker

Circuit-breaker version Fixed Withdrawable

1a) Shunt opening/closing release (YO/YC)

1b) SOR Test Unit

2a) Undervoltage rerlease (YU)

2b) Time-delay device for undervoltage release (D)

3) Geared motor for automatic charging of closingsprings (M)

4a) Mechanical signalling of overcurrenttrip units tripped

4b) Electrical and mechanical signallingof overcurrent trip units tripped

5a) Electrical signalling of circuit-breaker open/closed(*)

5b) Electrical signalling of circuit-breaker connected/isolated for test/isolated

5c) Contact signalling closing springs charged

5d) Contact signalling undervoltagerelease energised (C.aux YU)

6a) Current transformer for neutral conductoroutside circuit-breaker

6b) Homopolar toroid for main power supplyearthing conductor (star centre of the transformer)

7) Mechanical operation counter

8a) Lock in open position

8b) Circuit-breaker lock in connected/isolated for test position / isolated

8c) Accessories for lock in isolated/isolated for test position

8d) Accessorie for shutter padlock device

8e) Mechanical lock for compartment door

9a) Protection for opening and closing pushbuttons

9b) IP54 door protection

10) Circuit-breaker interlock

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Power supply (Un): 24 V –

30 V ∼

48 V ∼

60 V ∼

110-120 V ∼

125-127 V ∼

220-240 V ∼

250 V ∼

380-400 V ∼

440-480 V ∼

Operating limits: (YO): 70 … 110 Un

(YC): 85 … 110 Un

Inrush power (Ps): DC = 200 W

Inrush time ~100 ms AC = 200 VA

Continuous power (Pc): DC = 5 W

AC = 5 VA

Opening time (YO): (max) 60 ms

Closing time (YC): (max) 80 ms

Reference figure in circuit diagrams:YO (4-5) - YC (2-3)

Electrical accessories

1a) Shunt opening/closing release (YO/YC)

Allows remote control opening or closing of the switchgeardepending on the installation position and connection of thereleases in the support. The release can be used for either ofthese uses. Given the characteristics of the circuit-breakeroperating mechanism, opening (with the circuit-breaker closed)is always possible, while closing is only possible when theclosing springs are charged. The release can operate with di-rect current or alternating current.

This release provides instantaneous operation (*), but can bepowered permanently (**).

When used as a permanently powered closing release, it isnecessary to momentarily de-energise the closing release inorder to close the circuit-breaker again after opening (in fact,the circuit-breaker operating mechanism has an anti-pumpingdevice).

(*) The minimum impulse current duration time in instantaneousservice must be 100 ms.

(**) If the opening release is permanently connected to the powersupply, wait at least 30 ms before sending the command to theshunt closing release.

1b) SOR Test UnitThe control/monitoring SOR Test Unit allows continuity of thedifferent versions of SACE Emax series of shunt opening re-leases to be checked.

Under particularly severe operating conditions or simply forremote control of the circuit-breaker, the shunt opening releaseas an accessory for the SACE Emax series of power circuit-breakers is widely used.

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Maintenance of all functions of this accessory is a necessarycondition to guarantee a high level of safety in the installation.

This bring about the need to have a device available whichcyclically checks correct operation of the release, signallingany malfunctions.

The SACE SOR Test Unit allows continuity of the shunt open-ing release with a rated operating voltage between 24 V and250 V (a.c. and d.c.) to be checked.

Checking of continuity is carried out cyclically with an intervalof 20s between one test and the next.

The unit has visual signals by means of LEDs. The followinginformation in particular is indicated:

••••• POWER ON: power supply present

••••• YO TESTING: version of the test

••••• TEST FAILED: signal following a failed test or lack of auxil-iary power supply

••••• ALARM: signal following three failed tests.

Two relays with one change-over are also available on boardthe unit which allow remote signalling of the following twoevents:

••••• failure of a test - resetting takes place automatically whenthe alarm stops

••••• failure of three tests - resetting only takes place by means ofthe manual RESET from the front of the unit.

There is also a button for manual RESET on the front of theunit.

The main characteristics of the SACE SOR Test Unit are indi-cated below.

Auxiliary power supply 24 V ... 250 V ~

Maximum interrupted current 6 A

Maximum interrupted voltage 250V AC

2a) Undervoltage release (YU)

The undervoltage release opens the circuit-breaker in the eventof a significant drop in the power supply voltage or a powersupply failure. It can be used for remote release (using nor-mally-closed pushbuttons), for a lock on closing or for moni-toring the voltage in the primary and secondary circuits. Thepower supply for the release is therefore branched on the sup-ply side of the circuit-breaker or from an independent source.The circuit-breaker can only be closed with the release pow-ered (the closing lock is obtained mechanically). The releasecan operate both with direct current and alternating current.

Power supply (Un):

24 V – 125-127 V ~

30 V ~ 220-240 V ~

48 V ~ 250 V ~

60 V ~ 380-400 V ~

110-120 V ~ 440-480 V ~

The circuit-breaker is opened with release power supplyvoltages equal to 30-60% Un.The circuit-breaker can be closed with a release power supplyvoltage equal to 85% Un.


AC = 200 VA

Continuous power (Pc) DC = 5 W

AC = 5 VA

Opening time (YU): 30 ms

It can be fitted with a contact for signalling the undervoltagerelease is energised (C.aux YU) (see accessory 5d)Reference figure in circuit diagrams: YU (6)

Note: the use of an undervoltage release is not suitable when a Fail Safedevice is present.

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2b) Time-delay device for undervoltage release (D)

The undervoltage release can be combined with an electronictime-delay device for installation outside the circuit-breaker,allowing delayed trip of the release with adjustable preset times.Use of the delayed undervoltage release is recommended toprevent tripping when the power supply network for the re-lease may be subject to brief voltage drops or power supplyfailures. Closing of the circuit-breaker is inhibited when it is notpowered.

The time-delay device is designed to operate in conjunctionwith the undervoltage release with the same voltage as thetime-delay device.

The characteristics of the time-delay device are as follows:

Power supply (D): 24-30 V48 V60 V110-127 V220-250 V

Adjustable openingtime (YU+D): 0.5-1-1.5-2-3 s

Reference figure in circuit diagrams: YU+D (7)

3) Geared motor for automatic charging of closingsprings (M)

Allows automatic charging of the circuit-breaker operatingmechanism closing springs. The geared motor charges theclosing springs again immediately after the circuit-breaker hasclosed.

The closing springs can, however, be charged manually (us-ing the relative operating mechanism lever) in the event of apower supply failure or during maintenance work.

Power supply 24-30 V

48-60 V

100-130 V

220-250 V

Operating limits: 85…110 Un


AC = 500 VA

Rated power (Pn): DC = 200 W

AC = 200 VA

Inrush time 0,2 s

Loading time: 4-5 s

It is always supplied with a limit contact and microswitch forsignalling that the closing springs are charged (see acces-sory 5d).

Reference figure in circuit diagrams: M (1)

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84


4b) Electrical and mechanical signalling of overcurrenttrip units tripped

Allows visual signalling on the operating mechanism (mechani-cal) and remote signalling (electrical using change-over con-tact) that the circuit-breaker is open following operation of theovercurrent trip units. The mechanical signalling pushbuttonmust be rearmed to reset the circuit-breaker.The SACE PR112 trip unit is already supplied with an internalovercurrent signalling contact.

Reference figure in circuit diagrams: S51 (12)

4) Mechanical and electrical signalling of undervolt-age releases tripped

The following signals are available after the overcurrent tripunit has tripped:

4a) Mechanical signalling of overcurrent trip units tripped

Where the circuit-breaker is open following operation of theovercurrent trip units, this can be signalled visually on the op-erating mechanism, moving the release tripped pushbuttonout. The circuit-breaker can only be closed again by resettingthe pushbutton to its normal position.

– 10 open/closed contacts (5 normally open + 5 normallyclosed); not available when the SACE PR112 overcurrenttrip unit is required.

– 15 additional open/closed contacts for installation outsidethe circuit-breaker. The basic configuration described abovemay be modified by the user for normally open or normallyclosed indication by repositioning the faston connector onthe microswitch.

Reference figure in circuit diagrams: Q/1÷10 (21-22)

5) Auxiliary contacts

Auxiliary contacts, installed on the circuit-breaker are avail-able, which enable the state of the circuit-breaker to be sig-nalled.

Un In max t

125 Vdc 0.3 A 10 ms

250 Vdc 0.15 A

Un In max cos ϕϕϕϕϕ

250 Vac 5 A 0.3

The versions available are as follows:

5a) Electrical signalling of circuit-breaker open/closed

It is possible to have electrical signalling of the state (open/closed) of the circuit-breaker using 4, 10 or 15 auxiliary con-tacts.

The auxiliary contacts have the following configurations:

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89

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80

5b) Electrical signalling of circuit-breaker connected/isolated for test/isolated

In addition to mechanical signalling of the circuit-breaker po-sition, it is also possible to obtain electrical signalling using 5or 10 auxiliary contacts which are installed on the fixed part.

Only available for withdrawable circuit-breakers - for installa-tion on the fixed part.

The auxiliary contacts take on the following configurations:

– 5 contacts; set comprising 2 contacts for signalling con-nected, 2 contacts for signalling withdrawn and 1 contactfor signalling test position (main pliers isolated, but slidingcontacts inserted).

– 10 contacts; set comprising 4 contacts for signalling con-nected, 4 contacts for signalling withdrawn and 2 contactsfor signalling test position (main pliers isolated, but slidingcontacts inserted).

Reference figure in diagrams:

S75I (31-32)

S75T (31-32)

S75E (31-32)

5c) Contact for signalling closing springs loaded

Comprises a microswitch which allows remote indication ofthe state of the circuit-breaker operating mechanism closingsprings. (Supplied as standard with spring-charging gearedmotor).

Reference figure in circuit diagrams S33 M/2 (11)

5d) Contact signalling undervoltage release energised(C.aux YU)

The undervoltage releases can be fitted with a contact (nor-mally closed or open as preferred) for signalling undervoltageenergised to provide remote signalling of the state of the und-ervoltage release.

Reference figure in circuit diagrams: (12)

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max

0377

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06E

max

0416


6a) Current transformer for the neutral conductoroutside the circuit-breaker

Only for three-pole circuit-breakers. Allows protection of theneutral by means of connection to the overcurrent release. (Canbe supplied on request).

Reference figure in circuit diagrams:TI/N-UI/N (51-52)

6b) Homopolar toroid for the main power supplygrounding conductor (star centre of the transformer)

The range of SACE PR112 microprocessor-based electronicreleases can be used combined with an external toroid locatedon the conductor which connects the start centre of the MV/LVtransformer to earth (homopolar transformer).

In this case, the protection to earth is defined as Source GroundReturn.

The homopolar transformer is proposed in four different ver-sions in terms of rated current (but keeping the same overalldimensions in any case).

Rated current 100 A, 250 A, 400 A, 800 A

Reference figure in circuit diagrams: TI/O (51-52)

Mechanical accessories

8) Mechanical locks

7) Mechanical operation counter

Connected to the operating mechanism using a simple levermechanism, it indicates the number of mechanical operationsof the circuit-breaker. The indication is visible from outside onthe front of the circuit-breaker.

8a) Lock in open position

Several different mechanisms are available which allow thecircuit-breaker to be locked in the open position.

These devices can be controlled by:

– Key: a special circular lock with different keys (for a singlecircuit-breaker) or the same keys (for several circuit-break-ers). In the latter case, up to four different key numbers areavailable.

– Padlocks: up to 3 padlocks (not supplied): Ø 4 mm.

– Key with Kirk lock (arrangement only).

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83E

max

0373

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72E

max

0415

8b) Circuit-breaker lock in connected-isolated for test -isolated

This device can be controlled by a special circular lock withdifferent keys (for a single circuit-breaker) or the same keys (forseveral circuit-breakers - up to four different key numbers avail-able) and padlocks (up to 3 padlocks, not supplied - Ø 4 mm).

Only available for withdrawable circuit-breakers - for installa-tion on the moving part.

8c) Accessories for locking in isolated - isolated for testposition

In addition to the circuit-breaker lock in the connected - iso-lated for test - isolated position, allows the circuit-breaker tobe locked only in the isolated or isolated for test positions.

Only available for withdrawable circuit-breakers - for installa-tion on the moving part.

8d) Accessory for shutter padlock device

Allow the shutters (installed on the fixed part) to be padlockedin their closed position.

Only available for withdrawable circuit-breakers - for installa-tion on the fixed part.

8e) Mechanical lock for compartment door

Stops the compartment door from being opened when the cir-cuit-breaker is closed (and circuit-breaker connected for with-drawable circuit-breakers) and locks closing of the circuit-breaker when the compartment door is open.

8f) Fail Safe device (against racking-out operations withsprings charged)

This prevents the moving part of the withdrawable circuit-breaker from being racked out of the fixed part when the closingsprings are charged.

Note: the use of a Fail Safe device is not suitable when an undervoltagerelease is present.

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72E

max

0407

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9) Transparent protections

9a) Opening and closing pushbutton protection

These protections are fitted over the opening and closingpushbuttons, preventing the relative circuit-breaker operationsunless a special tool is used.

9b) IP54 door protection (NEMA 3/3S/13)

This is a transparent plastic protective cover which completelyprotects the front panel of the circuit-breaker, and allows de-gree of protection IP54 to be achieved. Mounted on hinges, itis fitted with a key lock.

10) Interlock between circuit-breakersThis mechanism creates a mechanical interlock between twoor three circuit-breakers (even different models and differentversions - fixed / withdrawable) using a flexible cable. The cir-cuit diagram for electrical switching using a relay (for installa-tion by the customer) is supplied with the mechanical inter-lock. The circuit-breakers can be installed vertically or hori-zontally.

Four types of interlocks are available:

type A: between 2 circuit-breakers (power supply + emergencypower supply)

type B: between 3 circuit-breakers (2 power supplies + emer-gency power supply)

type C: between 3 circuit-breakers (2 power supplies + bus-tie)

type D: between 3 circuit-breakers (3 power supplies / one sin-gle closed circuit-breaker)

Note : See the chapter on “Installation of the circuit-breaker” for infor-mation on the dimensions (fixed and withdrawable versions) and prepa-ration (pages 81, 82).

65

G

1 2

1 2 3

G

1 2 3

1 2O OI O

O I

G

1 2 3

1 2 3O O OI O O

O O II O I

O I O

1 2 3O O OI O O

O I OO O IO I II I OI O I

1 2 3O O OI O O

O I OO O I

InterlocksThe mechanical interlocks possible are shown below linked towhether 2 or 3 circuit-breakers (any model in any version) are

used in the switching system (also see chapter on “Accesso-ries”).

One normal power supply andone emergency power supply

O = Circuit-breaker open

I = Circuit-breaker closed

Circuit-breaker 1 can onlybe closed if 2 is open andvice versa



One or two circuit-break-ers out of three can beclosed at the same time.

Circuit-breakers 1 and 3can only be closed if 2 isopen.Circuit-breaker 2 can onlybe closed when 1 and 3are open.

Between two circuit-breakers

Two normal power supplies andone emergency power supply



The two half-busbars can be poweredby a single transformer (bus-tie closed)or by both at the same time (bus-tieopen)

Only one of three circuit-breakers can be closed.



Three power supplies (generators ortransformers) on the same busbar, sooperation in parallel is not allowed

Between three circuit-breakers



Type of interlock Typical circuit Interlocks possible

Type A

Type B

Type C

Type D

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0057 The emergency power supply is usually

installed to take over from the normalpower supply in two cases:

– to power health and safety services(e.g. hospital installations);

– to power parts of installations whichare essential for requirements otherthan safety (e.g. continuous cycle in-dustrial plants).

The range of accessories for SACE Emaxcircuit-breakers includes solutions for awide variety of different plant engineer-ing requirements.

Where devices for protection againstovercurrents and direct and indirect con-tacts and the provisions aiming to im-prove reliability and safety of emergencycircuits are concerned, see the relativestandards.

Switching from the normal to the emer-gency power supply can be carried outmanually (locally or by remote control)or automatically.

To this end, the circuit-breakers used forswitching must be fitted with the acces-sories required to allow electric remotecontrol and provide the electrical andmechanical interlocks required by theswitching logic.

These include:

– the shunt opening release

– the shunt closing release

– the motor operator

– the auxiliary contacts.

The switching function can be auto-mated using a suitable electronically-controlled relay circuit, to be installed bythe customer (circuit diagram suppliedby ABB SACE L.V.).

The mechanical interlocks between twoor three circuit-breakers are created us-ing cables which are suitable both forhorizontally and vertically installed cir-cuit-breakers.

67

Spare parts

Spare parts– Front metal shields and escutcheon plate

– Opening solenoid for SACE PR111 - PR112 overcurrent tripunit

– Arcing chamber

– Closing springs

– Plier isolating contact for fixed part of withdrawable circuit-breaker

– Sliding grounding contact (for withdrawable version)

– Shutters for fixed part

– Complete pole

– Control device

– Cables for connecting trip units and current transformers toeach other

– Transparent guard for trip units

– SACE PR110/B power supply unit.

69

Fixed circuit-breaker 70

Withdrawable circuit-breaker 74

Mechanical interlock 82

Circuit-breaker accessories 83

CONTENTS

Overall dimensions

70

Overall dimensions

E2 – E3 E4 – E6

E1

A

E1-A 296/11.65''

E2-A 296/11.65''

E3-A 404/15.91''

E4-A 566/22.28''

E6-A 782/30.79''

Fixed circuit-breaker

Version with horizontal rear terminals

Caption

1 Insulating wall or insulated metal wall

71

E1/E2 E4

E3 E6



Caption

1 Inside edge of compartment door

2 Segregation (when provided)

3 M10 mounting holes for circuit-breaker (use M10 screws)

4 1 x M12 screw for grounding (supplied as standard)

72

Overall dimensions

E3 (1200 ... 2000A)E2E1

E3 (1200...2000A)

E2E1


Version with vertical rear terminals

73

E3 (2500A) E4 E6

E3 (2500A) E4

E6



74

Overall dimensions

E2 – E3 – E4 – E6

E1

A

E1-A 324/12.76''

E2-A 324/12.76''

E3-A 432/17.01''

E4-A 594/23.39''

E6-A 810/39.89''

Withdrawable circuit-breaker


Caption

1 Travel from test connected to disconnected

75

Vista A - View A

E1 – E2 E3

E4 E6



Caption


2 Segregation (where provided)

3 M8 mounting holes for circuit-breaker (use M8 screw)


76

Overall dimensions

E1 – E2

E3 E4 - E6

A

E1-A 324/12.76''

E2-A 324/12.76''

E3-A 432/17.01''

E4-A 594/23.39''

E6-A 810/39.89''



Caption


77

E1 – E2 E3 (1200 ... 2000A)

E1 – E2 E3 (1200 ... 2000A)



Caption






78

Overall dimensions

E3 (2500 A) E4

E3 (2500 A) E4Caption








79

E6

Caption








80

Overall dimensions

A

E1-A 400/15.7''

E2-A 400/15.7''

E3-A 500/19.7''

E4-A 700/25.7'

E6-A 1000/39.3''

Dimensions of compartment

Copper bars

Insulating support

Suitable for continuos operation at 100% rating in a minimumcubicle space (see the table), with a ventilation of 48 (12x4) sq.in. side bottom and side top.Refer to shop drawings for verification.

81

Holes in compartment door

Holes for passing through flexible cables for mechanical interlocks

Withdrawable version Fixed version

82

Overall dimensions

4

2

2

4

Min

500

- M

ax 7

50

6

2

4

5

5 6

4 2

Min

500

- M

ax 7

50M

in 5

00 -

Max

750

3

6

2

3

4

2

4

6

Min

500

- M

ax 7

50M

in 5

00 -

Max

750

Min

500

- M

ax 7

50M

in 5

00 -

Max

750

46

1 2

1

4

2

65 6

32

3 4

5 1

1 2

4 6Min

500

- M

ax 7

50M

in 5

00 -

Max

750

5 6

32

3 4

5 1

1 2

4 6Min

500

- M

ax 7

50M

in 5

00 -

Max

750

Mechanical interlocks - Cable assembly interlock fitting

Horizontal interlocksHorizontal interlocksHorizontal interlocksHorizontal interlocksHorizontal interlocks

Maximum distance between twointerlocks 1200 mm from oneinterlock to the other. The cablespass under the fixed parts,following the same connectionlayout shown for vertical circuit-breakers.

NotesNotesNotesNotesNotes

When fitting interlocks between two circuit-breakers one has to make suitable holes(through the switchboard) in the mounting sur-face for fixed circuit-breakers or for the fixedpart of withdrawable circuit-breakers in order topass through the flexible cables, respecting themeasurements shown in the figures on page81.For vertical interlocks, align the right-handsides vertically and reduce the bends in theflexible cables to a minimum (radius R. 70 mm).All the angle values of the bends which the cablepasses through added together must not ex-ceed 720°.

Take up the excess cable bymaking it go through one com-plete turn only or an omega asshown in the figure.

Type A

HorizontalVertical

Type B

(emergencyinterlockunderneath)HorizontalVertical

Type B

(emergencyinterlock inmiddle)HorizontalVertical

Type B

(emergencyinterlock above)HorizontalVertical

Type C

HorizontalVertical

Type D

HorizontalVertical

83

X X

Y

Y

1807.09”

31,5/1.24”

ø6/0.24”

20/0.79”

73.5/2.89”

35/1.38”

E1 - E2 - E4

E3 - E6

Fixed version Withdrawable version

Current transformer for the externalneutral

Minimum distance between circuit-breaker and switchboard wallHoles in compartment door

Circuit-breaker accessories

Homopolar toroid

Compartment door mechanical interlock

84

Overall dimensions

2509.84”

50,5/1.99” 50,5/1.99”

2509.84”

“A” “A”

15 additional auxiliary contacts

Electrical signalling of circuit-breaker open/closed

A flexible cable 600 mm (26.3 in) long is available

from point "A" to point "B"

Fixed version Withdrawable version

85

Operating state shown 86

Circuit diagram symbols 87

Electrical circuit diagrams 88

CONTENTS

Electrical circuit diagrams

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VersionsThe circuit diagrams show withdrawable circuit-breakers butare also valid for fixed circuit-breakers.

Fixed versionThe control circuits are between terminals XV (connector X isnot supplied).

With this version, the applications indicated in figures (31, 32,51) cannot be provided.

Withdrawable versionThe control circuits are between the poles of connector X (ter-minal box XV is not supplied).

With this version, the application indicated in figure (52) can-not be provided.

Version without overcurrent releaseWith this version, the applications indicated in figures (3, 5,13, 41, 42, 51, 52) cannot be provided.

Version with PR111 or PR112/Pmicroprocessor-based releaseThe PR111 and PR112/P releases are fitted with the protectionunit only.

With this version, the applications indicated in figures (3(3(3(3(3, 55555,41, 42) 41, 42) 41, 42) 41, 42) 41, 42) for PR111 and (3, 5, 22, 42) (3, 5, 22, 42) (3, 5, 22, 42) (3, 5, 22, 42) (3, 5, 22, 42) for PR112/P, cannot beprovided.

Operating state shown

The circuit diagrams are for the following conditions:

• withdrawable version of circuit-breaker, open and con-nected

• circuits de-energised

• releases not tripped

• motor operating mechanism with springs charged.

87

M

IEC 617 02-12-01

IEC 617 02-08-05

IEC 617 02-13-04

IEC 617 02-13-01

IEC 617 02-15-05

IEC 617 02-13-05

IEC 617 03-01-07/03-01-09

IEC 617 02-17-06/02-17-07

IEC 617 03-02-01

IEC 617 03-01-08

IEC 617 03-03-05

IEC 617 03-02-02

IEC 617 06-13-11

IEC 617 06-04-01

IEC 617 07-02-01

IEC 617 06-10-08

IEC 617 07-08-01

IEC 617 07-02-03

IEC 617 07-08-02

IEC 617 07-13-08

IEC 617 07-13-05/07-01-03/07-01-05

IEC 617 07-16-01

IEC 617 07-15-01

IEC 617 07-16-01

IEC 617 07-16-01

IEC 617 07-16-01

IEC 617 07-16-01

IEC 617 09-09-09

–

IEC 617 07-02-04

IEC 617 07-08-01

Circuit diagram symbols (IEC 617 and CEI 3-14...3-26 Standards)

Timing

Mechanical connection

Mechanical operating mechanism

Rotary operating mechanism

Pushbutton control

Equipotential

Conductors in shieldedcable(example: 3 conductors)

Galvanicallyseparatedconverter

Conductor connections

Stranded conductorsor cables(example: 3 conductors)

Socket and plug(female and male)

Terminal or clamp

Current transformer

Motor(general symbol)

Winding of three-phasetransformer, connection star

Make contact

Make position contact(limit switch)

Break contact

Break position contact(limit switch)

Switch-disconnector

Power circuit-breaker-isolator withautomatic opening

Instantaneous overcurrentrelease

Control coil(general symbol)

Overcurrent release withinverse short time-delay trip

Overcurrent release withadjustable short time-delaytrip

Earth fault overcurrent release withinverse short time-delay trip

Overcurrent release with inverselong time-delay trip

Current sensor

Change-over position contactwith momentary interruption(limit switch)

Change-over break before makecontact

88

GS

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0077

x

N L1 L2 L3

Q

TI/L1

TI/L2

TI/L3

TI/N

UI/L1

UI/L2

UI/L3

UI/N

T11

T12

T21

T22

T31

T32

T41

T42

T11

T12

T21

T31

T32

T41

T42

T13

T14

T23

T24

T33

T34

T43

T44

T13

T14

T23

T24

T33

T34

T43

T44

T5

T6

T5

T6

T5

T6

T5

T6

XK1K51

1XO

1

2 2XO

Y01

PE

TI/O

XK

XK1 XV X

PR111

PR112/P

(*G)

4

3

2

1

N L1 L3L2

T22

Em

ax04

22


Three-pole circuit-breaker with SACE PR111 or PR112/Pmicroprocessor-based release

89

21131211

M

U1

U1

U1

X1 1

S33M/1

X1 2

U2

U2

U2

1

C1

C1

C1

X3 1

X3 2

C2

C2

C2

SC

C1

C1

C1

X3 1

X3 2

C2

C2

C2

SC

C3

XK3 28

S43

C3

C3

K51

XK3 26YC

2 3 4 5

C11

C11

C11

X4 1

X4 2

C12

C12

C12

SO

C11

C11

C11

X4

X4 2

C12

C12

C12

SO

C13

XK3 14

S43

C13

C13

K51

XK3 16YO

6 7

D1

D1

D1

X5

X5 2

D2

D2

D2

SO SO

D1

D1

D1

X5 1

X5 2

D2

D2D2

D

YC YC YO YO YU YU

37

37

37

X2 1

X2 2

38

38

38

S33M/2 YU

D13

D13

D13

X6 1

X6 2

D14

D14

D14

96

96

98

98

96 98

X7 2 3

S51

X7 1

95

95

95

13

13

13

Q/1

14

14

14

11

11

11

Q/2

12

12

12

23

23

23

Q/3

24

24

24

21

21

21

Q/4

22

22

22

33

33

33

Q/5

34

34

34

31

31

31

Q/6

32

32

32

43

43

43

Q/7

44

44

44

41

41

41

Q/8

42

42

42

53

53

53

Q/9

54

54

54

51

51

51

Q/10

52

52

52

22

2

3

67

45

1

21 22

12

13

11

(*B) (*B)

(*B)

1 1

GS

EM

0078

GS

EM

0078

Controlcircuits

Signallingcontacts

(*) See note indicated by the letter on page 93

Motor forchargingclosingsprings

Closingrelease

Closing releasewith control ofdialogue unit

Openingrelease

Opening releasewith control ofdialogue unit

Undervoltagerelease withelectronic time-delay device

Istantaneousundervoltagerelease

Ext

erna

lci

rcui

t

Signallingspringscharged

Signalling circuit-breaker open due toovercurrent releasetrip

First set of circuit-breaker auxiliarycontacts

Second set of circuit-breakerauxiliary contacts(excluded PR112/P)

Ext

erna

lci

rcui

tE

xter

nal

circ

uit

Ext

erna

lci

rcui

t


Signalling under-voltage releaseenergized

Inte

rnal

circ

uit

Inte

rnal

circ

uit

Conn. (X)

Term. (XV)

Conn. (X)

Term. (XV)

Conn. (X)

Term. (XV)

Conn. (X)

Term. (XV)

90

41

31

154

154

4 2

1

S75I/3

151

151

162

162

4 2

1

S75I/4

161

161

174

174

2 4

1

S75E/2

171

171

184

184

2 4

1

S75R3

181

181

192

192

2 4

1

S75R/4

191

191

104

104

4 2

1

S75I/1

101

101

112

112

4 2

1

S75I/2

111

111

124

124

2 4

1

S75E/1

121

121

134

134

2 4

1

S75R/1

131

131

142

142

2 4

1

S75R/214

1

141

32

K1

K1

K1

XK2 8

K2

K2

K2

XK2 9

Uaux.24V

K3

K3

K3

K4

K4

K4

XK3 22

K51µP

24XK3

K5

K5

K5

K6

K6

K6

XK3 18

K51pL

20XK3

K7

K7

K7

K8

K8

K8

XK3 2

K51YO1

30XK3

K9

K9

K9

K11

K11

K11

XK2 16

K51Zin

7XK2

K51Zout

K10

K10

K10

XK2 15

K51

PR112/P

W3

W3

W3

10XK2

(A) (B)( )

W2

W4

W4

W4

19XK2

CC

2

CC2

CC2

1XK2

31 32

41

(*F)

(*F)

–+

GS

EM

0079

GS

EM

0079

First set of circuit-breaker signalling contacts(connected, withdrawn, racked-out)

Auxiliary circuits ofPR112/P release

Second set of circuit-breaker signallingcontacts (connected, withdrawn, racked-out)


Signallingcontacts

Protectionunit


Ext

erna

lci

rcui

tE

xter

nal

circ

uit

Ext

erna

lci

rcui

t

Fix

ed p

art

Ext

erna

lci

rcui

t


Fixed partterminal box


Inte

rnal

circ

uit

Conn. (X)Term. (XV)

Conn. (X)

Term. (XV)

91

L1 L2 L3

Q

TI/L1

TI/L2

TI/L3

UI/L1

UI/L2

UI/L3

T11T12T21T22T31T32

T11T12T21T22T31T32

T14T23T24T33T34

T5T5

XK1

K51

1XO

1

2 2XO

Y01

XK1

PR112/P

PR111

XK1T13

XK1XVXTTT5T6

T5T6

T5T6

T14T23T24T33T34

T13T41T42T44T43

T41T42T44T43

104 112 124 134 142

101 111 121 131 141

T4T3

T3

T4

T43

T44

T1

T41

T42

T1

T2

T2

101

111

121

131

1411 1 1 1 1

104

112

124

134

142

4 2 4 2 2 4 42 42

S75I/1 S75I/2 S75E/2 S75R/1 S75R/2

T4T3

T3

T4

T43

T44

T1

T41

T42

T1

T2

T2

(*C

51 52

(*G)

NPE

TI/N

UI/N

PE

TI/O

4

3

2

1

NL1 L3L2

GS

EM

0081

x

Three-pole circuit-breaker withSACE PR111 or PR112/Prelease and current transformer onexternal neutral conductor

Withdrawable versionof circuit-breaker

Fixed versionof circuit-breaker

(*) See note indicated by the letter on page 93Externalcircuit


Fixed partcircuit

Connector

Internalcircuit

Terminal

92


D = Electronic time-delay device for undervoltage re-lease, outside circuit-breaker

K51 = PR111 or PR112/P microprocessor-based overcur-rent release with the following protection functions(seenote on page 93)

L overload protection with inverse long time-delay trip - setting I1

S short-circuit protection with inverse or definite short time-delay trip - setting I2

I short-circuit protection with instantaneoustime-delay trip - setting I3

G ground-fault protection with inverse short time-delay trip - setting I4

K51/YO1 = Electrical signalling of alarm due to tripping of releaseYO1 (for PR112/P release only)

K51/Zin = Zone selectivity: input (with Uaux and PR112/P re-leases only)

K51/Zout = Zone selectivity: output (with Uaux and PR112/Prelease only)

K51/pL = Electrical signalling of protection function L in pre-alarm zone (with Uaux and PR112/P release only)

K51/µµµµµP = Electrical signalling of alarm due to microprocessoroperating faults (with Uaux and PR112/P releases)

M = Motor for charging the closing springs

Q = Circuit-breaker

Q/110 = Auxiliary contacts of the circuit-breaker

S33M/1 = Limit contact of spring-charging motor

S33M/2 = Contact for electrical signalling of springs charged

S43 = Change-over contact for setting remote/local control

S51 = Contact for electrical signalling of circuit-breaker opendue to tripping of the overcurrent release. The circuit-breaker can only be closed after the reset pushbuttonhas been pressed

S75I/1…4 = Contacts for electrical signalling of circuit-breaker inconnected position (for withdrawable circuit-breakersonly)

S75E/1…4 = Contacts for electrical signalling of circuit-breaker inwithdrawn position (for withdrawable circuit-breakersonly)

S75R/1…4 = Contacts for electrical signalling of circuit-breaker inracked-out position (for withdrawable circuit-breakersonly)

SC = Pushbutton or contact for closing the circuit-breaker

SO = Pushbutton or contact for opening the circuit-breaker

TI/L1 = Current transformer located on phase L1



TI/N = Current transformer located on neutral

TI/O = Homopolar current transformer, located on the con-ductor connecting the star centre of the MV/LVtranformer to earth (see note G)

UI/L1 = Current sensor (Rogowski coil) located on phase L1



UI/N = Current sensor (Rogowski coil) located on neutral

Uaux. = Auxiliary power supply (see note F)W1 = Serial interface with the control system (external

bus): EIA RS485 interface (see note E)W2 = Serial interface with the accessories of the PR112/P

release (internal bus)

X = Delivery connector for auxiliary circuits of withdrawableversion circuit-breaker

X1...X7 = Connectors for circuit-breaker applications

XF = Delivery terminal board for the position contact of thewithdrawable circuit-breaker (applied to the fixed partof the circuit-breaker)

XK1 = Connector for the power circuits of PR111 and PR112/P releases

XK2, XK3 = Connector for the auxiliary circuits of PR112/P re-lease

XO = Connector for release YO1

XV = Delivery terminal board for auxiliary circuits of fixedversion circuit-breaker

YC = Shunt closing release

YO = Shunt opening release

YO1 = Overcurrent shunt opening release

YU = Undervoltage release (see note B)

Caption

93

IncompatibilityThe circuits shown in the following figures cannot be provided on the same circuit-breaker atthe same time: (2 - 3)

(4 - 5)(6 - 7)(22 - 41 - 42)(31 - 51)(51 - 52)

NotesNotesNotesNotesNotes

A) The circuit-breaker is only fitted with the applications specified in the ABB order acknowl-edgement.

B) The undervoltage release is supplied for operation using a power supply branched on thesupply side of the circuit-breaker or from an independent source. The circuit-breaker canonly close when the release is energized (there is a mechanical lock on closing).If the same power supply is used for the closing and undervoltage releases and one wantsautomatic closing of the circuit-breaker on return of the auxiliary power supply, it is neces-sary to insert a 30 millisecond delay between the undervoltage release accept signal andenergisation of the closing release. This can be obtained using a circuit outside the circuit-breaker which comprises a permanently closed contact, the contact indicated in figure (12)and a time-delay relay.

C) For fixed circuit-breakers with current transformers on the neutral conductors outside thecircuit-breakers, the terminals of transformer TI/N must be short-circuited when one wantsto remove the circuit-breaker.

D) Connect contact S33M/2 shown in Fig. (11), one of the make contacts and one of the breakcontacts of the circuit-breaker shown in Fig. (21) and one of the S75I contacts shown in Fig.(31) or (51) as shown in Fig. (42).On fixed circuit-breakers, connect terminal XV-K14 directly to terminal XV-K16 (contact S75Idoes not exist).

E) See the following documents on how to connect the EIA RS485 serial line:– examples of EIA RS485 serial communication distribution = 401517– prescriptions for laying EIA RS485 serial communication cable = 601823.

F) Auxiliary voltage Uaux. is necessary to guarantee that the following functions of SACEPR112/P releases will operate correctly even without self-supply (primary currents lowerthan 0.35 In):– current measurement– protection against earth fault and relative signals– K51/µp and K51/pL signalsThe presence of a primary current > 0.35 In on at least one phase fitted with current trans-former guarantees the correct operation of all protection and measurement functions.

G) Ground fault protection is available with the PR112/P release by means of a current trans-former located on the conductor connecting the star centre of the MV/LV transformer. Theconnection between terminals 1 and 2 of the TI/O current transformer and poles T5 and T6of connector X must be made with a two-pole shielded and corded ABB SACE L.V. typeT54602 cable with a length not exceeding 5 m. The shield must be grounded on the circuit-breaker side.

94

Due to the continuous development of Standards and materials, the specifications and dimensions in this catalogue may onlybe considered binding on confirmation by ABB Control.

ABB Control Inc.1206 Hatton RoadWichita Falls, TX 76302Tel.: (800) 385-1221

(940) 397-7000Fax: (940) 397-7001

web:www.abb.com/usa/abbcontrol

ABB Control10300 boul. Henri-Bourassa OuestSt-Laurent, QC, CANADA H4S 1N6Tel.: (514) 332-5350Fax: (514) 832-6522

web:www.abbcontrol.com

ITS

LV 6

0402

2/01

1 e

n

breaker sace emax

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