3wl manual

7/27/2019 3WL Manual

1/59

SENTRON Switching and ProtectionDevices

3WL Air Circuit Breakers

Reference Manual April 2009

Low-Voltage Controls and Distribution


2/59


3/59Siemens 2009

4 Introduction


3WL Air Circuit Breakers/

Non-Automatic Air Circuit Breakersup to 6300 A (AC)

General data

8 - Design

14 - Function

21 - Configuration

26 - Technical specifications

Project planning aids

34 - Characteristic curves

36 - Dimensional drawings

49 - Schematics

51 - More information

3WL Non-Automatic Air

Circuit Breakers up to 4000 A (DC)General data

52 - Technical specifications


53 - Characteristic curves

53 - Dimensional drawings

57 - Schematics

58 - More information

SENTRON Switching andProtection Devices Air Circuit Breakers


4/59

SENTRON Switching and Protection Devices Air Circuit Breakers

Introduction

4 Siemens 2009

Overview

Standard-- Not available Optional1) ETU15B cannot be used with 3WL circuit breakers, size III.

3WL air circuit breakers/non-automatic air circuit breakers

according to UL 489 up to 5000 A, see Catalog LV 16.

Air circuit breakers

3WL air circuit breakers/non-automatic air circuit breakersup to 6300 A (AC)

3WL non-automatic air circuit breakersup to 4000 A (DC)

Size I, II, III II

Rated currentIn A 630, 800, 1000, 1250,1600, 2000, 2500, 3200, 4000,5000, 6300

1000, 2000, 4000

Number of poles 3-pole, 4-pole 3-pole, 4-pole

Rated operationalvoltage Ue

V ACV DC

Up to 690/1000/1150--

--Up to 1000

Rated ultimateshort-circuit breaking

capacity at 500 V AC

kA

Size I

55/66

Size II

66/80/100

Size III

100/150 (3-pole),

130 (4-pole)

30/25/20

(at 300/600/1000 V DC)Endurance Opera-

ting cyc-les

20000 15000 10000 15000

Mounting position

Degree of protectionWith cover IP55 IP55Without cover(with door sealing frame)

IP41 IP41

Dimensions 3-/4-pole

W mm 320/410 460/590 704/914 460/590

H mm 434 434 434 434

D mmH mm

D mm

291465.5

471

291465.5

471

291465.5

471

291465.5

471

Type ETU15B1) ETU25B ETU27B ETU45B ETU76B

Solid-state releases for SENTRON 3WL circuit breakers

Overload protection

Short-time delayedshort-circuit protection

--

Instantaneousshort-circuit protection

Neutral conductor protection -- --

Ground-fault protection -- --

Zone Selective Interlocking -- -- --

LCD, 4-line -- -- -- --

LCD, graphic -- -- -- --

Communication throughPROFIBUS DP/MODBUS

-- -- --

Measurement function Plus -- -- --

Selectable parameter sets -- -- -- --

Parameters freely programmable -- -- -- --

CubicleBUS -- -- --

Size IIISize IISize I

NSE0_00062a

3 0 3 0

NSE0_00061a

30 30

NSE0_00062a

3 0 3 0

NSE0_00061a

30 30

NSS0_00535

H

W D

NSE0_

01106a

NSE0_

01107a

NSE0_

01108a

NSE0_

01109a

RatingPlug

NSE0_

01111a

Fixedmounting

Withdrawable


5/59


5Siemens 2009

Introduction

Switching capacity

1) Size II withIn max2500 A.2) Size II withIn max = 3200 A andIn max = 4000 A.3) At a rated voltage of 690 V theIcw value of the circuit breaker cannot be

greater than theIcu orIcs value at 690 V.4) Rated operational voltage Ue = 1150 V.

Size I II III

Type 3WL11 3WL12 3WL13

Switching capacity class N S N S H H C3-pole C4-pole

Short-circuit breaking capacity

Rated operational voltage Ueup to 415 V AC

Icu kA 55 66 66 80 100 100 150 130

Ics kA 55 66 66 80 100 100 150 130

Icm kA 121 145 145 176 220 220 330 286


Icu kA 55 66 66 80 100 100 150 130

Ics kA 55 66 66 80 100 100 150 130

Icm kA 121 145 145 176 220 220 330 286


Icu kA 42 50 50 75 85 85 150 130

Ics kA 42 50 50 75 85 85 150 130

Icm kA 88 105 105 165 187 187 330 286

Rated operational voltage Ueup to 1000 V/1150 V AC

Icu kA -- -- -- -- 45 50 704) 704)

Ics kA -- -- -- -- 45 50 704) 704)

Icm kA -- -- -- -- 95 105 1544) 1544)

Rated short-time withstand current Icwof the circuit breakers3)

0.5 s kA 50 66 66 80 100 100 100 100

1 s kA 42 50 55 66 80 100 100 100

2 s kA 29.5 35 39 46 651)/702) 80 80 80

3 s kA 24 29 32 37 501)/652) 65 65 65

Short-circuit breaking capacity Icc

of the non-automatic air circuit breakersUp to500 V AC

kA 50 66 66 80 100 100 100 100

Up to690 V AC

kA 42 50 50 75 85 85 100 100

N S N S H H C C

Circuit breakers with ECO switching capacity N(Icu = Ics up to 55 kA size I/up to 66 kA size II at 500 V)

Circuit breakers with standard switching capacity S(Icu = Ics up to 66 kA size I/up to 80 kA size II at 500 V)

Circuit breakers with high switching capacity H(Icu = Ics up to 100 kA at 500 V)

Circuit breakers with very high switching capacity C(Icu = Ics up to 150 kA (3-pole)/130 kA (4-pole)

at 500 V)

Circuit breakers with DC switching capacity

These circuit breakers are indicated in the Technicalspecifications by orange backgrounds.

N

S

H

C

DC


6/59


Introduction

6 Siemens 2009

SENTRON 3WL:Superior individual products integrated into uniform powerdistribution systems up to and including industry-specificindustrial and infrastructure solutions

$Guide frame%Main circuit connection, front, flange, horizontal, vertical&Position indicator switch(Grounding contact, leading)Shutter*COM15 PROFIBUS module or COM16 MODBUS module+External CubicleBUS modules,Closing solenoid, auxiliary release-Auxiliary conductor plug-in system.Auxiliary switch block/Door sealing frame0 Interlocking set for base plate1Transparent panel, function insert

2EMERGENCY-STOP pushbutton, key operated3Motorized operating mechanism

4Operating cycles counter5Breaker Status Sensor (BSS)6Protective devices with device holder, solid-state releases (ETU)7Remote reset solenoid8Breaker Data Adapter (BDA)9Four-line display:Ground-fault protection module;Rated current module


7/59


7Siemens 2009

Introduction

Communication-capable circuit breakers (with ETU45B or ETU76B solid-state release)

Features

Coordinated communication concept using the PROFIBUS DPor MODBUS, ranging from 16 A to 6300 A with SENTRON 3VLand SENTRON 3WL

The high level of modularity of circuit breakers and accessoriesallows easy retrofitting of all communication components

Significant additional benefits for the switchboard due to thepossibility of linking up external input and output modules tothe circuit breaker-internal CubicleBUS of the SENTRON 3WL

Innovative software products for parameterization, operation,monitoring, and diagnostics of SENTRON circuit breakers,both locally or via PROFIBUS DP, MODBUS or Ethernet/Intranet/Internet

Complete integration of the SENTRON circuit breakers into theTotally Integrated Power and Totally Integrated Automationsolutions

Communication:

For air circuit breakers with optional communication function(ETU45B or ETU76B solid-state release)

see Catalog LV 1. For accessories see Catalog LV 1.

For more information see also the Chapter "PowerManagement System" and "Software for Power Distribution".

5

1

21

22

19

8 6

2

4

20

14 15 16 17 18 7

91

3

10

11

12

13

SENTRON 3VL

Electronic LCD ETU release

Electronic ETU release

COM10 PROFIBUS module complete with ZSI

COM20 PROFIBUS module2) complete with ZSI

Breaker Data Adapter (BDA)

BDA Plus with Ethernet interface

Browser-capable input and output device (e.g. notebook)

SENTRON 3WL

COM15 PROFIBUS module1)

Breaker Status Sensor (BSS)

1) For a MODBUS connection the COM16 module is required.

2) For a MODBUS connection the COM21 module is required.

1

2

3

4

5

6

7

8

9

10

11

Electronic ETU release

Measurement function Plus

ZSI module

Digital output module with relay contacts

Digital output module with relay contacts, configurable

Analog output module

Digital input module

Switch ES Power on PC

PLC e.g. SIMATIC S7

SIMATIC powercontrol

PAC

12

13

14

15

16

17

18

19

20

21

22

NSE0_

01105h

PROFIBUS

Ethernet

CubicleBUS


8/59

3WL Air Circuit Breakers3WL Air Circuit Breakers/Non-Automatic Air Circuit Breakers up to 6300 A (AC)

General data

8 Siemens 2009

Design

Overview of SENTRON 3WL circuit breakers/non-automatic air circuit breakers

Versions

Rated currents: 630 A to 6300 A

3 sizes for different rated current ranges (see illustration"Overview of SENTRON 3WL Circuit Breakers/Non-AutomaticCircuit Breakers")

3- and 4-pole versions

Rated operational voltage up to 690 V AC and 1000 V DC.Special versions up to 1000 V AC and 1150 V AC available

4 different switching capacity classes in the range from 55 kA

to 150 kA for AC applications and one switching capacityclass for DC applications.

The SENTRON 3WL circuit breakers are supplied complete withoperating mechanism (manual operating mechanism with me-chanical closing), solid-state release and auxiliary switches(2 NO contacts + 2 NC contacts in the standard version), andcan be equipped with auxiliary releases.

Installation types

Fixed-mounted or withdrawable version

Ambient temperatures

The SENTRON 3WL circuit breakers are climate-proof accordingto IEC 60068-2-30. They are intended for use in enclosed areaswhere no severe operating conditions (e. g. dust, corrosive va-pors, damaging gases) are present.

When installed in dusty and damp areas, suitable enclosuresmust be provided.

Coordinated dimensions

The dimensions of SENTRON 3WL circuit breakers only differ interms of the width of the device which depends on the numberof poles and the size.

Due to the nature of the design, the dimensions of devices witha withdrawable version are determined by the dimensions of theguide frames, which are slightly larger.

Non-automatic air circuit breakers

A special version of circuit breaker is utilized as a non-automaticair circuit breaker. The non-automatic air circuit breakers are de-

signed without an solid-state release system and do not performany protection duties for the system.

One potential application is the use as a bus coupler in systemswith parallel feed-ins.

The versions and features can be selected according to those ofthe circuit breakers.

Operating mechanisms

The circuit breakers are available with various optional operatingmechanisms:

Manual operating mechanism with mechanical closing (stan-dard design)

Manual operating mechanism with mechanical and electricalclosing

Motorized operating mechanism with mechanical and electri-cal closing

The operating mechanisms with electrical closing can be usedfor synchronization tasks.

NSE0_00887 o

HS

1008066

460 / 590 460 / 590

291 / 291 385 / 385

434 / 434 460 / 460

320 / 410 320 / 410

291 / 291 385 / 385

434 / 434 460 / 460

H

100

C

150 (3p)130 (4p)

704 / 914 704 / 914

291 / 291 385 / 385

434 / 434 460 / 460

SN

6655800

1000

1250

1600

630

800

1000

1250

1600

2000

2500

3200

4000

4000

5000

6300

N

30

DC

The dimension for the depth of the circuit breaker is from the circuit breaker rear to the inner surface of the closed switchgear door.

Circuit breaker Breaking capacity Dimensions

Fixed-mounted,With-drawable

3- /4-pole3- /4-pole

Width

Depth

Height

Width

Depth

Height

Width

Depth

Height

Size

III

Size

I

Size

II

at 500 V AC (kA) orcurated current (A)n max

at 300 V DC (kA)cc


9/59


9Siemens 2009

3WL Air Circuit Breakers/Non-Automatic Air Circuit Breakers up to 6300 A (AC)

General data

Main circuit connections connection types

Main circuit connections

All circuit breakers are equipped with horizontal main circuitconnections on the rear for up to 5000 A as standard (horizontalconnection to busbars). Exception: Circuit breakers of size IIwith max. rated current 4000 A.Circuit breakers with a max. rated current of 6300 A and circuitbreakers size II with a max. rated current of 4000 A are equippedwith vertical main connections (for upright busbars).

The following options are available, with all combinations of topand bottom connections possible: Accessible from the front, single hole (for vertically installed

busbars) Accessible from the front, double hole (holes according to

DIN 43673) (for vertically installed busbars) At the rear, vertical (for vertically installed busbars) Connecting flange (for direct connection to guide frame up to

4000 A).

Connection options for auxiliary circuit connections

Auxiliary circuit connections

The type of connection for the auxiliary switches depends on thetype of installation:

Withdrawable version: The internal auxiliary switches are con-nected to the male connector on the switch side. When fully in-

serted, the connector makes a connection with the slidingcontact module (see "Design", graphic "Guide Frame") in theguide frame. Various adapters can then be used to completethe wiring (see the graphic "Connection Options for AuxiliaryCircuit Connections").

Fixed mounting: In this case the auxiliary supply connectorsare engaged directly onto the circuit breaker. The connectorsare equipped with coding pins that prevent them being mista-kenly interchanged.

Operator panel

The operator panel is designed to protrude from a cut-out in thedoor providing access to all control elements and displays withthe control cabinet door closed.The operator panels for all circuit breakers (fixed-mounted/with-drawable versions, 3-/4-pole) are identical. The operator panel

ensures degree of protection IP41.

Safety and reliability

To protect the circuit breakers and plant against unauthorizedswitching as well as the maintenance and operator personnel, thesystem contains many locking devices. Others can be retrofitted.

Other safety features include:

Infeed from above or below, as required Locking of the guide frame with the circuit breaker removed,

as standard

Locking of the withdrawable circuit breaker against move-ment, as standard

High degree of protection with cover IP55

Mechanical reclosing lockout after overload or short-circuitrelease as standard

The circuit breaker is always equipped with the required num-ber of auxiliary supply connectors

Standard version

SENTRON 3WL circuit breakers are equipped with the followingfeatures as standard:

Mechanical ON and OFF pushbutton

Manual operating mechanism with mechanical closing

Switch position indicator

Ready-to-close indicator

Memory status indicator

Auxiliary switch 2 NO + 2 NC

Rear horizontal main circuit connections for fixed-mounted andwithdrawable versions up to 5000 A, and rear vertical main cir-cuit connections for 6300 A applications and size II with 4000 A

For 4-pole circuit breakers, the fourth pole (N) is installed onthe left and is 100 % loadable with the rated current

Contact erosion indicator for the main contacts

Auxiliary circuit plug-in system with SIGUT screw terminalsDelivery inclusive of all auxiliary circuit connectors to internal

features including coding device for the prevention of incor-rect installation of auxiliary supply connectors for fixed-moun-ted circuit breakers

Mechanical "tripped" indicator for solid-state release system

Mechanical reclosing lockout after tripping operation

Operator panel cannot be taken off with the circuit breaker inthe ON position

Additional features of the withdrawable version:

Main contacts:Laminated receptacles in the guide frame, penetration bladeson the withdrawable circuit breaker

Position indicator in the operator panel of the withdrawablecircuit breaker

Captive manual crank handle for moving the withdrawable

circuit breaker Guide frame with guide rails for easy moving of the withdra-

wable circuit breaker

The withdrawable circuit breaker can be locked to prevent itbeing pushed out of position

The withdrawable circuit breaker cannot be moved when it isin the ON position

Coding of the rated current between the guide frame and thewithdrawable circuit breaker

Standards

SENTRON 3WL circuit breakers comply with: IEC 60947-1, IEC 60947-2 EN 60947-1, EN 60947-2 Climate-proof according to IEC 60068-2-30

Versions according to UL 489 also available, see Catalog LV 16.For further specifications, see Appendix.

Horizontalconnection

Front connection with singlehole or double hole

Verticalconnection

Horizontalconnection

Front connection with singlehole or double hole

Verticalconnection

Flangeconnection

NSE0_

00967b

NSE0

_00968b

NSE0

_00969b

NSE0

_00979

a

NSE0

_00967b

NSE0

_00970b

NSE0

_00971b

NSE0

_00972b

NSE0

_00973

b

Fixed-mounted circuit breakers

Withdrawable circuit breakers and guide frames

Connection usingscrew terminalssystem (SIGUT)(standard)

Screwlessconnection method(tension springs)(optional)

NSE0_

00975b

NSE0_

00976b


10/59


General data

10 Siemens 2009

Withdrawable short-circuit, grounding, and bridgingunits

Portable positively-driven grounding and short-circuit devicesare used for the disconnected system sections to verify isolationfrom the supply at the workplace.

Withdrawable grounding units allow simple and comfortablegrounding. They are simply inserted into the guide frames inplace of the corresponding withdrawable circuit breakers. Thisensures that these devices are always first connected with thegrounding electrode and then with the components to be groun-ded.

The grounding terminals are fitted to the side of the switch enc-losure and establish the connection when inserted into the guideframe.

All withdrawable terminals are short-circuited and grounded ondelivery.

Qualified electricians can easily convert it to a withdrawablebridging unit by following the enclosed instructions.

In addition, the withdrawable unit can be adapted to various ra-ted currents of a size.

Withdrawable short-circuit and grounding unit

The withdrawable short-circuit and grounding unit consists of abreaker enclosure with penetration blades which are connectedwith the short-circuiting link.

Depending on the version, the short-circuiting links are arrangedat the top or bottom. The grounding and short-circuit connec-tions are established when the device is inserted.

It must be ensured that the side to be short-circuited and groun-ded is not live. For this reason it is recommended that the with-drawable unit is only wound in when the door is closed.

Withdrawable bridging unit

The withdrawable bridging unit consists of a breaker enclosurein which all disconnection components and the operating me-chanism have been replaced with simple connections betweenthe upper and lower contacts.

Auxiliary releases

Up to two auxiliary releases can be installed at the same time.The following are available:

1 shunt releaseor 1 undervoltage releaseor 2 shunt releasesor 1 shunt release+ 1 undervoltage release

Signal switch for auxiliary releases

One signaling contact is used for each auxiliary release to deter-mine the positions of the auxiliary releases.

Shunt releases

When the operational voltage is connected to the shunt release,the circuit breaker is opened immediately. The shunt release isavailable in the versions 5 % ON period for overexcitation and100 % ON period for permanent excitation. This means that it isalso possible to block the circuit breaker against being joggedinto closing.

An energy storage device for shunt releases allows the circuitbreaker to be opened even if the control voltage is no longeravailable.

Undervoltage releases

The undervoltage release causes the circuit breaker to beopened if the operational voltage falls below a certain value or isnot applied. The circuit breaker cannot be closed manually or bymeans of an electrical ON command if the undervoltage releaseis not connected to the operational voltage. The undervoltage re-lease has no delay as standard. A delay can be set by the cus-tomer in the range between td < 80 ms and td < 200 ms.

In addition, an undervoltage release with a delay in the rangefrom 0.2 to 3.2 s is available.

Closing solenoid

The closing solenoid is used to close the circuit breaker electri-cally by means of a local electrical ON command or by a remoteunit.

Motorized operating mechanisms

The operating mechanism is used to load the storage spring au-tomatically.

The operating mechanism is activated if the storage spring hasbeen unloaded and the control voltage is available.

It is switched off automatically after loading. This does not affectmanual operation of the storage spring.

Indicators, signals, and control elements

Motor shutdown switch

Control switch for switching off the motorized operating mecha-nism (automatic loading).

Operating cycles counter

The motorized operating mechanism can be supplied with a 5-digit operating cycles counter. The display is incremented by "1"as soon as the storage spring is fully loaded.

Resetting the manual tripped signal

When the circuit breaker has tripped, this is indicated by theprotruding red mechanical tripped indicator on the ETU. Whenthe mechanical tripped indicator is activated, the tripping sole-noid and tripped signal are reset. If this display is to be reset re-motely, the reset button can be equipped with a reset solenoid.

This option allows the circuit breaker to be reset both manuallyand electrically.

Automatic resetting of reclosing lockout

When the ETU is activated, reclosing of the circuit breaker is pre-vented until the release is either electrically or manually reset. Ifthe "Automatic resetting of reclosing lockout" option is used, the

pre-tensioned circuit breaker is ready to close immediately aftertripping. Resetting the manual tripped indicator is not includedin this option.

Tripped signal switch

If the circuit breaker has tripped due to an overload, short-cir-cuit, ground fault or extended protection function, the tripped si-gnal switch can indicate this. This signal switch is available asan option. If the circuit breaker is used for communication, thisoption is supplied as standard.

Ready-to-close indicator switch

The SENTRON 3WL circuit breakers are equipped with an opti-cal ready-to-close indicator as standard. In addition, the ready-to-close status can be transmitted by means of a signal switchas an option. If the switch is used for communication, the signalswitch is supplied as standard.

Short-time current of thegrounding terminal

kA 15 (500 ms)

Rated operational voltage V 1000 (690 for size I)

Standards EN 61230


11/59


11Siemens 2009


General data

Circuit breakers

Guide frames

NSE0_00965b

(1 )

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

( 1 1 )

(15)

(13)

(12)

(14)

(23)

(24)

(25)

(26)

(27)

(28)

(22)

(16)

(17)

(18)

(20)

(19)

(21)

(1) Arc chute

(2) Carrying handle

(3) Labeling plate

(4) Motor shutdown switch (option) or

"Electrical ON" (option)(5) Name plate for circuit breaker

(6) Memory status indicator

(7) "Mechanical ON" button

(8) Rated current indication

(9) Positioning pictogram

(10) Operating cycles counter (option)

(11) Hand-operated lever

(12) Crank handle

(13) Withdrawable unit drive shaft

(14) Equipment plate

(15) Ground terminal

(16) Position indicator

(17) Table for ground-fault protection

(18) Safety lock for crank handle (option)

(19) Mechanical unlocking of crank handle(option)

(20) Solid-state release

(21) Rated current module

(22) "Mechanical OFF" button or"EMERGENCY-STOP" mushroompushbutton (option)

(23) Ready-to-close indicator

(24) Switch position indicator

(25) "Tripped" indicator (reset button)

(26) "Secure OFF" locking device (option)

(27) Operator panel

(28) Male connector for auxiliary circuitconnections

NSE0_00966b

(13)

(14)

(15)

(16)

(17)

(18)

(12)

(10)

( 1 1 )

(1 )

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(1) Arc chute cover(option)

(2) Blow-out openings

(3) Opening for crane hook

(4) Shutter (option)

(5) Locking device (shutter) (option)

(6) Type plate for guide frame

(7) Isolating contacts

(8) Ground terminal 14 mm

(9) Locking device for racking rail

(10) Locking device against movement whencontrol cabinet door is open (option)

(11) Door interlocking for guide frame (option)

(12) Racking rail(13) Factory-set rated current coding

(14) Sliding contact for breaker grounding(option)

(15) Equipment-dependent coding (option)

(16) Shutter actuator (optional)

(17) Position indicator switch (optional)

(18) Sliding contact module for auxiliaryconductors (number depends onequipment)


12/59


General data

12 Siemens 2009

Locking devices

Locking device in OFF position

This function prevents closing of the circuit breaker and com-plies to the specifications for main switches to EN 60204(VDE 0113) - disconnector unit. This lockout only affects this cir-cuit breaker.

If the circuit breaker is replaced, closing is no longer preventedunless the new circuit breaker is also protected against unautho-rized closing.

To activate the locking device, the circuit breaker must beopened. The locking device is disabled when the circuit breakeris closed. The lock is only activated when the key is removed.The safety key can be removed only in the "OFF" position.

Locking device for "Electrical ON"(see graphic "Circuit breakers")

This prevents unauthorized electrical closing from the operatorpanel. Mechanical closing and remote closing remain possible.The lock is only activated when the key is removed.

Locking device for "Mechanical ON"(see graphic "Circuit breakers")

This prevents unauthorized mechanical closing. The mechanicalON button can only be activated if the key is inserted (key ope-ration). Closing with the "Electrical ON" button and remote clo-sing remain possible. The lock is only activated when the key isremoved.

"Secure OFF" circuit breaker-independent locking deviceagainst unauthorized closing

This special switch-independent function for withdrawable cir-cuit breakers prevents closing and fulfills the specifications formain switches to EN 60204 (VDE 0113) disconnector unit. Un-authorized closing remains impossible even after the circuitbreaker has been exchanged.

To activate the lock, the circuit breaker must be opened. The lo-cking device is disabled when the circuit breaker is closed. Thelock is only activated when the key is removed. The safety keycan be removed only in the "OFF" position.

Locking device for crank handle

Prevents removal of the crank. The circuit breaker is protectedagainst movement. The lock is only activated when the key isremoved.

Locking device for "Mechanical OFF"

Prevents unauthorized mechanical opening from the operatorpanel. The "Mechanical OFF pushbutton" can only be activatedif the key is inserted (key operation). Remote opening remainspossible. The lock is only activated when the key is removed.

Locking device for hand-operated lever

The hand-operated lever can be locked with a padlock. The sto-rage spring cannot be loaded manually.

Locking device against resetting the "tripped" indicator

A lockable cover prevents manual resetting of the "tripped" indi-cator after overcurrent tripping. This locking device is suppliedtogether with the transparent cover for solid-state releases.

Sealing devices

Sealing cap for "Electrical ON" button

The "Electrical ON button" is equipped with a sealing cap asstandard.

Sealing cap for "Mechanical ON" and "OFF" buttonThe locking set contains covering caps which can be sealed.

Sealing device for solid-state releases

The transparent cover can be sealed. The parameter settingsections are covered to prevent unauthorized access. Openingsallow access to the query and test button.

Locking mechanisms

Locking mechanism against movement for withdrawable circuitbreakers when the control cabinet door is open

The crank handle is blocked when the control cabinet door isopen and cannot be removed. The withdrawable circuit breakercannot be moved. The lock only affects the inserted crankhandle.

Locking of the control cabinet door

The control cabinet door cannot be opened if

The fixed-mounted circuit breaker is closed (the blockingsignal is transmitted via the Bowden wire) or

The withdrawable circuit breaker is in the connected position.

Blocking mechanism using "Mechanical ON" and "OFF" buttons

The "Mechanical ON" and "OFF" buttons are covered with a capwhich only allows actuation with a tool. These covering caps arepart of the locking set.

Optional equipment for guide frames

Shutters

The sealing strips of the shutter seal the laminated contacts of

the guide frame when the withdrawable circuit breaker is remo-ved and therefore implement touch protection.

The sealing strips can be manually opened using the striplevers.

The position of the sealing strips can be locked in various posi-tions using padlocks for securing against tampering.


13/59


13Siemens 2009


General data

Rated current coding unit between circuit breaker and guideframe

Withdrawable circuit breakers and guide frames are equippedwith a rated current coding unit as standard.

This ensures that only circuit breakers whose penetration bladesare suited to the laminated contacts of the guide frame can beinserted into a guide frame (see diagram below).

Rated current coding unit between circuit breaker and guide frame

Equipment-dependent coding

Withdrawable circuit breakers and guide frames can be retrofit-ted with an equipment-dependent coding unit.

This allows different designs of circuit breakers and guide fra-mes to be uniquely assigned. If the circuit breaker and guideframe have been assigned different codes, the circuit breakercannot be inserted.

36 different coding options can be selected.

Position indicator switch for guide frames

The guide frame can be equipped with position indicator swit-ches. These can be used to determine the position of the circuitbreaker in the guide frame.

Two versions are available:

Option 1Connected position 1 CO contact,test position 1 CO contact,disconnected position 1 CO contact.

Option 2Connected position 3 CO contacts,

test position 2 CO contacts,disconnected position 1 CO contact.

Positions of the withdrawable circuit breaker in the guide frame

Phase barriers

The plant engineering company can manufacture phase barriersmade of insulating material for the arcing fault barriers. The rearpanel of the fixed-mounted circuit breakers or guide frames areequipped with guide grooves.

Arc chute cover

The arc chute cover is available as optional equipment for theguide frame. It protects switchgear components which are loca-ted directly above the circuit breaker.

Door sealing frame and cover

SENTRON 3WL circuit breakers have degree of protection IP20as standard. However, if the switchgear is to be equipped with ahigher degree of protection, a door sealing frame with IP41 anda cover with IP55 are available.

(1 )

(3)

(2)

NSE0_

01031a

(4)

(5)

NSE0_

01032a

(1) Guide frame, interior of l/h side; interior of r/h side similar

(2) Coding pin on racking rail in guide frame

(3) Racking rail

(4) Withdrawable circuit breaker, r/h side; l/h side similar

(5) Coding pin on guide frame

Display Position indicator Main circuit Auxiliary circuit Control cabinetdoor

Shutters

Maintenance position Disconnected Disconnected Open Closed

Disconnected position Disconnected Disconnected Closed Closed

Test position Disconnected Connected Closed Closed

Connected position Connected Connected Closed Open

(1) Auxil iary circui t (2) Main circui t (3) Control cabinet door (4) Shutter

NSE0_01033a

(1 )(2)

(4)

CONNECT

TEST

DISCON

NSE01037

NSE0_01034a

(3)CONNECT

TEST

DISCON

NSE01038

NSE0_01035a

CONNECT

TEST

DISCON

NSE01039

N S E 0 0 1 0 3 6 a

CONNECT

TEST

DISCON

NSE01040


14/59


General data

14 Siemens 2009

Function

ETU15B ETU25B ETU27B

Functions of the solid-state releases

Basic protection functions

Overload protection L

Short-time delayed short-circuit protection S --

Instantaneous short-circuit protection I

Neutral conductor protection N -- --

Ground-fault protection G -- --

Additional functions

N-conductor protection can be switched on/off -- -- N-conductor protection adjustable -- -- --

Instantaneous short-circuit protection can be switched on/off -- -- --

Non-delayed short-circuit protection can be switched on/off -- -- --

Thermal image can be switched on/off -- -- --

Load monitoring -- -- --

Short-time delayed short-circuit protection switchable toI2t -- -- --

Instantaneous short-circuit protection adjustable -- --

Overload protection switchable toI4t -- -- --

Overload protection can be switched on/off -- -- --

Selectable parameter sets -- -- --

Parameterization and display

Parameterization through rotary coding switches (10 steps)

Parameterization through communication (absolute values) -- -- --

Parameterization through user interface of ETU (absolute values) -- -- --

Parameterization of the extended protection functions -- -- --

LCD alphanumerical -- -- --

Graphic LCD -- -- --

Measurement function

Measurement function Plus -- -- --

Communication

CubicleBUS -- -- --

Communication through PROFIBUS DP -- -- --

Communication through MODBUS -- -- --

Communication through Ethernet -- -- --

Standard -- Not available Optional

Detailed information about the functions of the solid-state releases is given in the following.

R

i

NSE0_00950c

NSE0_

00880b

R

sd

Jsd

NSE0_00951b

NSE0_

00881b

R

sd

Jsd

g

Jg

NSE0_00952b

NSE0_

00882b


15/59


15Siemens 2009


General data

ETU45B ETU76B

--

--

--

--

--

--

--

IR

tR

Isd

tsd

Iitg

Ig

NSE0 00953a

NSE0_

00883b

=

12

Rating Plug

IR

tR

Isd

tsd

Iitg

Ig

NSE0 00953a

NSE0_

00886c

ETU76B


16/59


General data

16 Siemens 2009

Solid-state releases (ETU)

The solid-state release is controlled by a microprocessor andoperates independently of an auxiliary voltage. It enables sys-tems to be adapted to the different protection requirements ofdistribution systems, motors, transformers and generators.

Communication capabilities

The international standard PROFIBUS DP or MODBUS can beused to transmit data such as current values, switching states,reasons for tripping etc. to central computers.

Data acquisition and energy management are possible in con-junction with the Plusmeasurement function.

A new internal circuit breaker data bus allows switchboard panelcommunication between the circuit breaker and secondary de-vices in the circuit breaker section:

Actuation of analog displays

Facility to test the communication build-up with circuitbreakers

Display of tripping state and tripping reasons

Input module for reading in further switchgear panel signalsand for transmission of these signals to the PROFIBUS DP orMODBUS

Various output modules for displaying measured values

This means that it is not only possible to monitor the device re-motely, but also to transmit current values from the entire systemand perform switching operations remotely.

I2t andI4t characteristic curve for overload protection

The best protection for the whole switchgear is achieved by set-ting the tripping characteristic curve to an optimum value. In or-der to achieve optimal discrimination for upstream fuses or me-dium voltage protection systems, the inclination of thecharacteristic curve can be selected for the overload range.

The overload protection L (long time protection) for the solid-

state releases ETU45B and ETU76B allows the characteristiccurve to be switched between I2tand I4t.

The I4tcharacteristic improves discrimination for downstreamcircuit breakers and fuses.

Solid-state releases ETU

Modularity has also been strictly emphasized during the deve-lopment of the solid-state releases. These are some of themodules which can be easily retrofitted at any time:

Ground-fault protection module

Communication


Display

Rated current module (Rating Plug)

This allows quick adaptation to new local mains specifications.In addition, innovative functions have been included in the ETUs.

Rated current module/Rating Plug

The rated current module is an exchangeable module which al-lows the user to reduce the rated device current so as to adaptit optimally to the plant; e. g. if a new plant section is taken intooperation. The rated current module must be selected to fit therated current of the plant.

Example of configuration for ETU45B

Measurement function Plus

Selectable parameters

In the case of quick changes of power supply conditions,e. g. for switchovers from transformer to generator operation orif a section of the supply is disconnected when the shiftchanges, SENTRON 3WL allows the relevant protection parame-ters to be quickly adapted to the new conditions.The ETUs contain two independent tripping characteristic cur-ves (parameter sets). The switchover is completed within

200 ms and is performed with the help of an external signal.

Ground-faultprotection mo-dule (retrofitt-able)

Tripped indicator/Reset button

LCD alpha-numericwith 15inclinationand rotatablethrough 180

Slide switchfor switchableoverloadcharacteristiccurve

Rated currentmodule/rating plug


17/59


18/59


General data

18 Siemens 2009

ETU27B solid-state release

ETU45B solid-state release

Application:

Classical building, motor and sys-tem protection with time-selective

coordination for up to 6300 AFeatures:

The same as ETU25B but also

Reversible neutral conductorprotection

Permanently integrated ground-fault protection. Calculation ofthe ground-fault current throughvectorial summation currentformation

For technical details see the table"Functional overview of thesolid-state release system"under "Technical specifications".

NSE0_

00956c

Rating Plug

N

OFF

OFFON

ETU27B

Rotary switch for delay,

earth-fault protection

N-conductor protection

on/off

value, earth-fault protection

Rotary switch for setting

Rated current module

Option: safety lockprevents pressing ofreset button afterovercurrent release

Indicator: fault in

overcurrent release

Sealing ring

Test socket

Clear pushbutton

Indicator: cause of release


short-circuit release

Mechanical RESET

for reclosing lockout

and mechanical

tripped indicator


value, overload release


value, instantaneous

short-circuit release

Indicator: overcurrent

release activated

Indicator: overload alarm

Query pushbutton

Test pushbu tton

Short-circuit protection

fixed setting

Application:

Low-cost all-round system for intelligent buil-dings and all types of industrial applications "CubicleBUS integrated"

Features:

The same as ETU25B but also Adjustable time-lag class

for overload protection

Selectable characteristic for overload andshort-delayed short-circuit range (currentdiscrimination) for more accurate discrimi-nation adaptation to upstream fuses andprotective devices

Thermal image as restart protection for trip-ped motor outgoing feeders

Reversible and adjustable neutral conduc-tor protection

Modular ground-fault protection modulewith alarm and tripping functions which canbe adjusted separately

Communication interface,measurement function Plus, optional con-nection of external modules or forretrofitting

Storage of events and causes for trippingfor detailed fault analysis

Extended protection function possible withmeasurement function

Optional high-contrast display with viewingangle adjustment option

The protection functions can be set bymeans of a rotary coding switch or slideswitch

For technical details see the table

"Functional overview of thesolid-state release system""Technical specifications".

=

12

g

NSE0_00957b

Rating Plug

O FF O N

11111

SI

ETU45B

t/ t42

t / t2g g

Option: safety lockprevents pressing ofreset button afterovercurrent release

Mechanical RESET

for reclosing lockout

and mechanical

tripped indicator

Indicator: fault in

overcurrent release

Sealing ring

Test socket

Rotary switch for settingvalue, overload release

Rotary switch for settingvalue, instantaneousshort-circuit release

Overload alarm

Overcurrent release

activated

Clear pushbutton

Indicator: cause of release

Rotary switch for delay,short-circuit release

Rated current module

Selector forearth-fault protection


earth-fault protection

N-conductor protection on/off

Scroll up

COMMUNICATION

EXPANDED

Indicators:

Rotary switch for settingvalue, short-circuit

protection

Rotary switch for settingvalue, earth-fault

protection

Rotary switch for settingvalue, earth-fault alarm

Test pushbutton

Query pushbutton

Option: alphanumeric display

Scroll down

Thermal memory on/off

Setting valueN-conductor overload

Indicator: earth-fault tripped

Indicator: earth-fault alarm

Option: earth-fault module

Rotary switch for delay,overload release

Transfer of overloadcharacteristic


19/59


20/59


General data

20 Siemens 2009

Measurement method

Vectorial summation current formation (measurement method 1)

The three phase currents and the N conductor current aremeasured directly.

The solid-state release determines the ground-fault current bymeans of vectorial summation current formation for the threephase currents and the N conductor current.

Direct measurement of the ground-fault current(measurement method 2)

A standard current transformer with the following data is used formeasurement of the ground-fault current: 1200 A/1 A, Class 1(the internal load of SENTRON 3WL is 0.11 ). The current trans-former can be installed directly in the grounded neutral point ofa transformer.

3-pole circuit breakers, current transformers in the N conductor

3-pole circuit breakers, current transformers in the grounded neutralpoint of the transformer

4-pole circuit breakers, current transformers in the grounded neutralpoint of the transformer

Setting

How the module is set depends on the measurement methodused (see above):

Measurement method 1: in position .

Measurement method 2: in position .This setting can be implemented for the solid-state release ver-sion ETU76B with Menu/Comm.

Ground-fault protection withI2t characteristic curve

With the exception of the ETU27B solid-state release, allversions of the ground-fault modules are supplied with anI2tcharacteristic curve which can be activated.

Selection criteria for SENTRON 3WL circuit breakers

Basic criteria for selecting circuit breakers are:

Max. short-circuit current at place of installation of circuit brea-ker Ik max.This value determines the short-circuit breaking capacityor short-circuit current carrying capacity of the circuit breaker.

It is compared with the valueIcu,Ics, Icw of the circuit breakerand essentially determines the size of the circuit breaker.See illustration "Overview of SENTRON 3WL CircuitBreakers/Non-Automatic Air Circuit Breakers".

Rated currentIn which is to flow through the branch circuit.This value must not be larger than the maximum rated currentfor the circuit breaker.The rated current for the SENTRON 3WL is set with the ratedcurrent module. See "Design", illustration "Overview ofSENTRON 3WL Circuit Breakers/Non-Automatic Air CircuitBreakers".

Ambient temperaturefor the circuit breaker.This is usually the control cabinet internal temperature.

Design of the circuit breaker

Minimum short-circuit currentwhich flows through the switching device. The release muststill detect this value as a short-circuit and must respond bytripping.

Protection functions of the circuit breaker.These are determined by the selection of thecorresponding solid-state release, see the table"Functions of the solid-state releases" under "Functions".

NSE 00946

L1

L2

L3

N

PET5

SENTRON WL

NSE 00947

L1

L2

L3

N

PE

T6

SENTRON WL

T6: 1200 A/1 A

NSE 00948

L1

L2

L3

N

PE

T6

SENTRON WL

T6: 1200 A/1 A


21/59


21Siemens 2009


General data

SENTRON 3WL for DC applications

This version of the 3WL non-automatic air circuit breaker is sui-table for direct current applications. The external protective de-vice DIGmat S100 provides adjustable overload and short-circuit protection for the SENTRON 3WL non-automatic air circuitbreaker.

This is based on the measuring chain of a shunt resistor and theDIGmat S100 tripping unit. Shunt resistors are available for1000 A, 2000 A and 4000 A (special ranges on request). Theyare in accordance with DIN 43703 and have a class accuracyof 0.5.

A measuring-circuit voltage of 60 mV DC is picked off for ratedcurrentIn.

The measuring-circuit voltage is a linear image of the primarycurrent.

The DIGmat S100 tripping unit monitors the image of the primarycurrent thus supplied and compares it with the tripping cha-racteristic curve set on the device. The parameter settings onthe DIGmat S100 apply also for DC feedbacks.Reversing duty is possible therefore.

The tripping characteristic curve is determined and describedby the following variables:

Overload protection:Setting rangeIR = 0.4 ... 1.0InThe curve has aI2tcharacteristic.The tripping time tR is selectable between 2 and 10 s, with tRdefined for 6 IR.

DIGmat S100

Short-circuit protection:Setting rangeIi = 1.25 IR up to max. 4 InIf the set value is exceeded, tripping occurs in less than50 ms.

In = Rated current of the circuit breaker

IR = Set current value of the adjustable overload releasetR = Assigned tripping time of the overload tripIi = Instantaneous tripping current of the adjustable short-

circuit releases

The components are available only from the companymat Maschinen- und Anlagentechnik(for address see "Appendix" => "External Partners").

Configuration

Mutual mechanical circuit breaker interlocking

The module for mutual mechanical interlocking can be used forone or two SENTRON 3WL circuit breakers and can be adaptedeasily to the corresponding versions. The fixed-mounted andwithdrawable circuit breaker versions are fully compatible and

can therefore be used in a mixed configuration in an installation.This also applies to 3WN6 circuit breakers.

The circuit breakers can be mounted alongside each other orone above the other, whereby the distance of the circuit breakersis determined solely by the length of the Bowden wire (lengths:2 m/3 m/4.5 m). Interlock signals are looped through using theBowden wires. Interlocking is only effective in the connected po-sition in the case of withdrawable circuit breakers. The mechani-cal endurance of the Bowden cables is 10 000 operating cycles.

Minimum requirements must be fulfilled in the switchgear for theinterlocking to function:

Bowden wires must be installed as far as possible in a straightline with minimum bending.

The bending radii of the Bowden wire must be greater than500 mm.

The sum of all bending angles along the Bowden wire must notexceed 640.

In a vertical arrangement of circuit breakers to be interlocked,

the interlocking mechanisms must be in line. Circuit breakers to be interlocked must be arranged so that

Bowden cables can be optimally installed in compliance withthe conditions mentioned in the above points.

The installed Bowden wire must be fixed (with cable ties or thelike) before the interlock is adjusted.

Select the width of switchgear cubicle to allow enough free-dom of movement for adjusting the interlock!

Openings and cut-outs in system elements must be designedso that Bowden wires are not changed in direction or obs-tructed when they are passed through.

Mutual mechanical interlocking of circuit breakers examples

Mutual interlocking of twocircuit breakers

Interlocking between threecircuit breakers

Mutual interlocking of threecircuit breakers

Interlocking of three circuitbreakers, two of them mutual

G

NSE01041

S1 S2

NSE01042

S1 S3

S2

NSE01043

S1 S2 S3

G

NSE01044

S1 S2 S3

G

S1 S3

S2

NSE01045


22/59


General data

22 Siemens 2009

Communication-capable circuit breakers

Communication with PROFIBUS DP

Communication with MODBUS

The requirements for power distribution in terms of communica-tion capability, data transparency, flexibility and integration areconstantly increasing. An integrated and modular communica-tion architecture was designed for the SENTRON 3WL to ensure

that it can satisfy these requirements.

The core component of this architecture is the CubicleBUS,which links together all of the intelligent components within theSENTRON 3WL and enables the easy and safe connection ofother additional external components to the circuit breaker. TheCubicleBUS is already incorporated and pre-connected in allcomplete circuit breakers with ETU45B and ETU76B releases.

The high level of modularity of the system allows communicationfunctions to be retrofitted at any time (e. g. the measurementfunction). Similarly, the upgrade of a non-communication-ca-pable SENTRON 3WL (e .g. changeover from ETU25B to

ETU45B with CubicleBUS) can be carried out easily on site inthe plant. All modules connected to the CubicleBUS can directlyaccess the existing source data of the circuit breaker, which gu-arantees the quickest possible access to information and re-sponse to events.

Furthermore, additional external modules (including digital in-puts/outputs, analog outputs) can be connected to theCubicleBUS to provide cost-effective solutions for the automa-tion of further devices in the switchgear.

NSE0_

01820a

Ethernet/

Intranet/

Internet

PLC e.g. SIMATIC S7

data acquisition and

processing

PC with Switch ES Power

SENTRON 3WL/3VL parameterization

and visualization tool throughPROFIBUS DP

Output device

e.g. notebook

with browser

BDA

BDAPlus

Measurement-

function Plus

COM15

BSS

ETUZoneSelective

Interlockingmodule

Digitaloutputmodule

Relay

Digitaloutputmodule

Relay,configurable

Analogoutputmodule

Digitalinputmodule

NSE0_

01894

Ethernet/

Intranet/

Internet

MODBUS Master

PLC or monitoring software

Configuration and

display software

Output device

e.g. notebook

with browser

BDA

BDAPlus

Measurement

function Plus

COM16

BSS

ETU

MODBUS

ZoneSelective

Interlockingmodule

Digitaloutputmodule

Rela

y

Digitaloutputmodule

Relay,configurable

Analogoutputmodule

Digitalinputmodule


23/59


24/59


General data

24 Siemens 2009

Data that can be transmitted over the PROFIBUS DP/MODBUS or the Breaker Data Adapter

1) Data only available in conjunction with the COM15 module (BUS connec-tion not required).

2) Only possible with ETU76B.

Available

-- Not available

All SENTRON 3WLs with ETU45B, ETU76B (CubicleBUS integrated)

Transmittable circuit breaker data

BSS BDA BSS COM15/COM16

Order code (Order No. of circuit breaker + "Z")

Order No.

F01+"BDA/BDAPLUS"Order No.

F02/F12

Potential applications

Transmission of circuit breaker data to PROFIBUS DP or MODBUS and integration intohigher-level visualization systems are possiblee. g. in PCS7, Power Management Systems, WinCC (incl. add-ons like the text message radio server)

--

Transmission of circuit breaker data and software (i. e. HTML pages with data) to a local outputdevice, or remotely through Ethernet/Intranet/Internet (without the possibility of integration intohigher-level visualization systems)e. g. for monitoring, diagnostics, maintenance and parameterization of individual circuit breakers

--

Utilization of the functionality of all CubicleBUS modulese. g. configuration of the configurable digital output module, status check of the digital input modules,diagnostics

Transmittable circuit breaker data without integrated measurement functionDevice identificationCommunication address, Order No., circuit breaker in delivery status, circuit breaker parameters(size, number of poles, rated current module etc.), identification numbers, release type,Free text for plant code and comments

--1)

Operating statusesOn/off status message, storage spring, tripped, readinessSwitching position (connected, test and disconnected position, removed) for withdrawable circuit breakers,PROFIBUS/MODBUS write protection on/off, free user input

--1)

--1)

Control commandsSwitch circuit breaker on/off, switch free user output on/offReset tripped signalDelete event and history memoryReset the min./max. measured values, reset the maintenance information

--1)

--1)

HistoryRead out the event protocol, read out the release protocol --1)

Maintenance informationNumber of tripping operations L, S/I and in total, contact wearNumber of operating cycles under load and in total, number of operating hours

--1)

Event signalsTripped signal with details of the tripping currentAlarm signals (e. g. overload) with incoming/outgoing informationAll of the named event signals with time stamp

--1)

--1)

Parameterization of the protection functionsReading out of the protection function parametersSettings for the protection function parameters can be changed by means of communicationParameter set switchover possible (set A to set B and back)

2)

2)

2)

2)

Measured valuesPhase currents, each with min./max. valueTemperature in the circuit breaker with min./max. valueTemperature in the control cabinet with min./max. valueAll of the named measured values with time stamp

--1)

--1)

--1)

Measurement functionPlus

Order code F01+ ... or F02+ ... F05

Additional transmittable circuit breaker data with integrated measurement function

Additional event signalsThreshold value alarms (e. g. over/underfrequency, over/undervoltage)

Parameterization of the extended protection functions and setpoints (threshold values)Reading out the parameters of the extended protection functionsSettings for the extended protection function parameters can be changedReading out and adjusting threshold values

Additional measured valuesVoltages, power, energy, power factor, frequency, each with min./max. valueHarmonic analysisRecording of currents and voltages for configurable events in the curve form memory


25/59


25Siemens 2009


General data

CubicleBUS modules

Digital output modules with rotary coding switch

6 items of binary information concerning the state of the circuitbreaker (reasons for tripping and warnings) can be output viathis module to external signaling devices (e. g. LED, horn) or beused for the selective shut-down of other system components(e. g. frequency converters).

Digital output modules are available in versions with and withouta rotary coding switch. On modules with a rotary coding switchit is possible to choose between two signaling blocks each with6 defined assignments and to set an additional response delay.

All the digital output modules are available as a version with re-lay outputs (CO contacts, up to 12 A). Up to two modules of thistype can be connected to one SENTRON 3WL.

Digital output module with rotary coding switch

Digital output modules, configurable

The configurable output module is available for higher-perfor-mance solutions. With this module, random events on theCubicleBUS can be switched directly to one of six available out-puts or three of these outputs can be assigned with up to sixevents. In other words, up to six events can be placed on onephysical output with OR operation. Either BDA/BDA PlusorSwitch ES Power is used for configuring.

A relay variant is also available here the same as for the output

modules with rotary coding switch. Only one module of this typeis possible per SENTRON 3WL.

Digital output module, configurable

Analog output modules

The analog output module can be used to output the followingmeasured values to analog indicators in the control cabinetdoor: IL1,IL2,IL3,IN or UL12, UL23, UL31, UL1N or PL1, PL2, PL3, Stot or p.f.1 , p.f.2 , p.f.3, I% or favg, ULLavg, Ptot, p.f.avg

Four 4-20-mA/0-10-V interfaces are available for this. Themeasured values to be output are selected with a rotary codingswitch. By using the analog output module it is possible to dowithout additional converters and their conventional installa-tion/wiring in the main current path. Up to two modules of thistype can be connected to one SENTRON 3WL.

Analog output module

Digital input modules

With the digital input module, up to 6 additional binary signals(24 V DC) in the circuit breaker environment can be connectedto the system. It is thus possible for example to send messagesconcerning the state of a switch disconnector or a control cabi-net door to the PROFIBUS DP/MODBUS.

With the digital input module on the CubicleBUS it is also pos-sible for the two different protection parameter sets held in theETU76B solid-state releases to be switched over automatically in

a few milliseconds. It is thus possible, for example, to automati-cally change the parameters of a coupling switch should thetransformer infeed fail.

One module each of this type can be used for holding the sixitems of digital information and for automatically switching overthe parameters.

Digital input module

ZSI modules (short-time grading control)

The use of ZSI modules is recommended when Siemens circuitbreakers are arranged in several staggered levels but full gra-ding with the smallest possible delay is to be assured neverthe-less.

The circuit breakers are interconnected by these modules. Incase of a short-circuit, each affected circuit breaker asks the cir-cuit breakers directly downstream whether the short-circuit hasalso occurred in the next, lower level. The short-circuit is exactlylocalized as the result, and only the next upstream circuit brea-ker in the energy flow direction is switched off.

ZSI module (short-time grading control)


26/59


General data

26 Siemens 2009

Technical specifications

1) Size II withIn max2500 A.

2) Size II withIn max = 3200 A andIn max = 4000 A.

3) At a rated voltage of 690 V theIcw value of the circuit breaker cannot begreater than theIcu orIcs value at 690 V.

4) Rated operational voltage Ue = 1150 V.

Size I II III

Type 3WL11 3WL12 3WL13

Switching capacity class N

S

N

S

H

H

C

3-pole

C

4-poleShort-circuit breaking capacity


Icu kA 55 66 66 80 100 100 150 130

Ics kA 55 66 66 80 100 100 150 130

Icm kA 121 145 145 176 220 220 330 286


Icu kA 55 66 66 80 100 100 150 130

Ics kA 55 66 66 80 100 100 150 130

Icm kA 121 145 145 176 220 220 330 286


Icu kA 42 50 50 75 85 85 150 130

Ics kA 42 50 50 75 85 85 150 130

Icm kA 88 105 105 165 187 187 330 286

Rated operational voltage Ueup to 1000 V/1150 V AC

Icu kA -- -- -- -- 45 50 704) 704)

Ics kA -- -- -- -- 45 50 704) 704)

Icm kA -- -- -- -- 95 105 1544) 1544)

Rated short-time withstand current Icwof the circuit breakers3)

0.5 s kA 50 66 66 80 100 100 100 100

1 s kA 42 50 55 66 80 100 100 100

2 s kA 29.5 35 39 46 651)/702) 80 80 80

3 s kA 24 29 32 37 501)/652) 65 65 65

Short-circuit breaking capacity Iccof the non-automatic air circuit breakers

Up to 500 V AC kA 50 66 66 80 100 100 100 100

Up to 690 V AC kA 42 50 50 75 85 85 100 100

N S N S H H C C

Circuit breakers with ECO switching capacity N(Icu = Ics up to 55 kA size I/up to 66 kA size II at 500 V)

Circuit breakers with standard switching capacity S(Icu = Ics up to 66 kA size I/up to 80 kA size II at 500 V)

Circuit breakers with high switching capacity H(Icu = Ics up to 100 kA at 500 V)

Circuit breakers with very high switching capacity C(Icu = Ics up to 150 kA (3-pole)/130 kA (4-pole)at 500 V)

Circuit breakers with DC switching capacity

These circuit breakers are indicated in the Technicalspecifications by orange-colored backgrounds.

N

S

H

C

DC


27/59


27Siemens 2009


General data

1) Opening time on instantaneous short-circuit release withETU15B = 85 ms.

2) Make-time through closing solenoid for synchronization purposes(short-time excited) 50 ms.

3) Maintenance means: replace main contact elements and arc chutes (seeOperating Manual).

4) Use of releases from 20 C.5) ETU76B with graphics display can be used up to max. 55 C.

Size I II

Type ... 3WL11 10 3WL11 12 3WL11 16 3WL12 08 3WL12 10 3WL12 12 3WL12 16 3WL12 20

Rated currentInat 40 C, at 50/60 HzMain conductorN conductor (only on 4-pole versions)

AA

... 1000

... 100012501250

16001600

800800

10001000

12501250

16001600

20002000

Rated operational voltage Ue at 50/60 Hz(for 1000 V version see Catalog LV 1, "Options")

V AC ... 690 ... 690 ... 690 ...690/1000

...690/1000

...690/1000

...690/1000

...690/1000

Rated insulation voltage Ui V AC 1000 1000 1000 1000 1000 1000 1000 1000

Rated impulse withstand voltage Uimp Main current paths Auxiliary circuits Control circuits

kVkVkV

1242.5

1242.5

1242.5

1242.5

1242.5

1242.5

1242.5

1242.5

Isolating function acc. to EN 60947-2 Yes Yes Yes Yes Yes Yes Yes Yes

Utilization categories B

Permissible ambient temperature During operation (in operation with LCD max. 55 C)4)

During storage (special conditions for LCDs must beobserved)

CC

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

Permissible loadAt rear horizontal main circuitconnections

Up to 55 C (Cu bare) Up to 60 C (Cu bare)5)

Up to 70 C (Cu blackpainted)5)

AAA

100010001000

125012501210

160016001490

800800800

100010001000

125012501250

160016001600

200020002000

Rated rotor operational voltage Uer V 2000 2000 2000 2000 2000 2000 2000 2000

Power loss atInWith 3-phase symmetrical load Fixed-mounted circuit breakers Withdrawable circuit breakers

WW

100195

105205

150350

4085

4595

80165

85175

180320

Operating times Make-time Opening time

Electrical make-time (through closing solenoid)2)

Electrical opening time (through shunt release)

Electrical opening time (instant. undervoltage release) Opening time due to ETU, instant. short-circuit release

msms

msmsmsms

3538

807373501)

3538

807373501)

3538

807373501)

3534

1007373501)

3534

1007373501)

3534

1007373501)

3534

1007373501)

3534

1007373501)

Endurance Mechanical (without maintenance) Oper. cycles Mechanical (with maintenance)3) Oper. cycles Electrical (without maintenance) Oper. cycles 1000 V version, electrical (without maintenance) Oper. cycles 1150 V version, electrical (without maintenance) Oper. cycles Electrical (with maintenance)3) Oper. cycles

100002000010000----20000

100002000010000----20000

100002000010000----20000

100001500075001000500

15000

1000015000

75001000500

15000

100001500075001000500

15000

100001500075001000500

15000

100001500075001000

50015000

Switching frequency 690 V version 1000 V version

1150 V version

1/h1/h

1/h

60--

--

60--

--

60--

--

6020

20

6020

20

6020

20

6020

20

6020

20Minimum interval between tripping operation by solid-staterelease and next making operation of the circuit breaker (onlywith autom. mechanical resetting of the lockout device)

ms 80 80 80 80 80 80 80 80

Mounting position

and/or

Degree of protection IP20 without cabinet door, IP41 with door sealing frame, IP55 with cover

Main conductorminimumcross-sections

Copper bars,bare

Copper bars,painted black

Unitsmm2

Unitsmm2

1 60 101 60 10

2 40 102 40 10

2 50 102 50 10

1 50 101 50 10

1 60 101 60 10

2 40 102 40 10

2 50 102 50 10

3 50 103 50 10

Auxiliary conductors (Cu)Max. number ofauxiliary conductors cross-section (solid/stranded)

Standard connection =strain-relief clamp Without end sleeve With end sleeve acc. to

DIN 46228 Part 2 With twin end sleeve

2 0.5 mm2 (AWG 20) ... 2 1.5 mm2 (AWG 16); 1 2.5 mm2 (AWG 14)1 0.5 mm2 (AWG 20) ... 1 1.5 mm2 (AWG 16)

2 0.5 mm2 (AWG 20) ... 2 1.5 mm2 (AWG 16)Optional connection =tension spring Without end sleeve With end sleeve acc. to

DIN 46228 Part 2

2 0.5 mm2 (AWG 20) ... 2 2.5 mm2 (AWG 14)2 0.5 mm2 (AWG 20) ... 2 1.5 mm2 (AWG 16)

Position indicator switches Tension spring terminals 1 0.5 mm2 (AWG 20) ... 1 2.5 mm2 (AWG 14)

Weights 3-pole

4-pole

Fixed-mounted circuitbreakers

Withdrawable circuitbreakers

Guide frames Fixed-mounted circuit

breakers Withdrawable circuit

breakers Guide frames

kg

kg

kgkg

kg

kg

43

45

2550

54

30

43

45

2550

54

30

43

45

2550

54

30

56

60

3167

72

37

56

60

3167

72

37

56

60

3167

72

37

56

60

3167

72

37

56

60

3167

72

37

NSE0_00061a

30 30

NSE0_00062a

3 0 3 0

NSE0_00927a

h

=1mm

max.


28/59


General data

28 Siemens 2009

1) Opening time on instantaneous short-circuit release withETU15B = 85 ms.

2) Make-time through closing solenoid for synchronization purposes(short-time excited) 50 ms.

3) Maintenance means: replace main contact elements and arc chutes (seeOperating Manual).

4) Use of releases from 20 C.5) ETU76B with graphics display can be used up to max. 55 C.6) 4000 A, size II in fixed-mounted version, 3-pole.7) Size III: data for very high switching capacity.8) Minimum main conductor cross-sections for 4-pole withdrawable circuit

breakers: 4 x 120 x 10 mm.

Size II III

Type 3WL12 25 3WL12 32 3WL12 40 3WL13 40 3WL13 50 3WL13 63

Rated current In at 40 C, at 50/60 HzMain conductorN conductor (only on 4-pole versions)

AA

25002500

32003200

40004000

40004000

50005000

63006300

Rated operational voltage Ue at 50/60 Hz

(for 1000 V version see Catalog LV 1, "Options")

V AC ... 690/1000 ... 690/1000 ... 690 ... 690/1000 ... 690/1000 ... 690/1000

Rated insulation voltage Ui V AC 1000 1000 1000 1000 1000 1000

Rated impulse withstand voltage Uimp Main current paths Auxiliary circuits Control circuits

kVkVkV

1242.5

1242.5

1242.5

1242.5

1242.5

1242.5

Isolating function acc. to EN 60947-2 Yes Yes Yes Yes Yes Yes

Utilization categories B (except switching capacity class DC)

Permissible ambient temperature During operation (in operation with LCD max. 55 C)4)

During storage (special conditions for LCDs must be observed)CC

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

25/+7040/+70

Permissible load6) Up to 55 C (Cu bare) Up to 60 C (Cu bare)5)

Up to 70 C (Cu black painted)5)

AAA

250025002280

320030202870

395038103600

400040004000

500050005000

592058105500

Rated rotor operational voltage Uer V 2000 2000 2000 2000 2000 2000

Power loss at InWith 3-phase symmetrical load Fixed-mounted circuit breakers Withdrawable circuit breakers

WW

270520

410710

750925

520810

6301050

9001600

Operating times Make-time Opening time

Electrical make-time (through closing solenoid)2)

Electrical opening time (through shunt release)

Electrical opening time (instantaneous undervoltage release) Opening time due to ETU, instantaneous short-circuit release

msms

msms

msms

3534

10073

73501)

3534

10073

73501)

3534

10073

73501)

3534

10073

7350

3534

10073

7350

3534

10073

7350

Endurance Mechanical (without maintenance) Oper. cycles Mechanical (with maintenance)3) Oper. cycles Electrical (without maintenance) Oper. cycles 1000 V version, electrical (without maintenance) Oper. cycles 1150 V version, electrical7) (without maintenance) Oper. cycles Electrical (with maintenance)3) Oper. cycles

100001500075001000500

15000

100001500040001000500

15000

100001500040001000500

15000

500010000200010001000

10000

500010000200010001000

10000

500010000200010001000

10000

Switching frequency 690 V version 1000 V version 1150 V version7)

1/h1/h1/h

602020

602020

602020

602020

602020

602020

Minimum interval between tripping operation by solid-staterelease and next making operation of the circuit breaker (onlywith automatical mechanical resetting of the lockout device)

ms 80 80 80 80 80 80

Mounting position

Degree of protection IP20 without cabinet door, IP41 with door sealing frame, IP55 with cover

Main conductorminimumcross-sections

Copper bars,bare

Copper bars,painted black

Unitsmm2

Unitsmm2

2 100 10

2 100 10

3 100 10

3 100 10

4 120 10

4 100 108)

4 x100 x 10

4 100 10

6 x100 x 10

6 100 10

6 x120 x 10

6 120 10

Auxiliary conductors(Cu)Max. number ofauxiliary conductors cross-section

(solid/stranded)

Standard connection = strain-relief clamp Without end sleeve With end sleeve acc. to DIN 46228 Part 2 With twin end sleeve

2 0.5 mm2 (AWG 20) ... 2 1.5 mm2 (AWG 16); 1 2.5 mm2 (AWG 14)1 0.5 mm2 (AWG 20) ... 1 1.5 mm2 (AWG 16)

2 0.5 mm2 (AWG 20) ... 2 1.5 mm2 (AWG 16)

Optional connection = tension spring Without end sleeve With end sleeve acc. to DIN 46228 Part 2

2 0.5 mm2 (AWG 20) ... 2 2.5 mm2 (AWG 14)2 0.5 mm2 (AWG 20) ... 2 1.5 mm2 (AWG 16)

Position indicator swit-ches

Tension spring terminals 1 0.5 mm2 (AWG 20) ... 1 2.5 mm2 (AWG 14)

Weights 3-pole

4-pole

Fixed-mounted circuit breakers Withdrawable circuit breakers Guide frames

Fixed-mounted circuit breakers Withdrawable circuit breakers Guide frames

kgkgkg

kgkgkg

596339

717647

646845

778254

8512152

10314662

828860

9910684

828860

9910684

909670

108108119

NSE0_00061a

30 30

NSE0_00062a

3 0 3 0

and/or

NSE0_00927a

h

=1mm

max.


29/59


29Siemens 2009


General data

1) 24 V and 30 V only with undervoltage release UVR (F3).

Size I to III

Type 3WL1

Manual operating mechanism with mechanical closing

Closing/Charging stored-energy feature

Max. force required to operate the hand leverRequired number of strokes on the hand lever

N 2309

Manual operating mechanism with mechanical and electrical closing

Charging stored-energy feature

Closing solenoid(CC)

Operating range 0.85 ... 1.1 Us

Extended operating range for battery operation At 24 V DC, 48 V DC60 V DC, 110 V DC220 V DC

0.7 ... 1.26 Us

Power consumption AC/DC VA/W 15/15

Minimum command duration at Us for the closing solenoid ms 60

Short-circuit protectionSmallest permissible DIAZED fuse (gL operational class)/miniature circuit breaker with C characteristic

1 A TDz (slow)/1 A

Manual/motorized operating mechanism with mechanical and electrical closing

Manual operating

mechanism

For data see above.

Motor Operating range 0.85 ... 1.1 Us

Extended operating range for battery operation At 24 V DC, 48 V DC60 V DC, 110 V DC220 V DC

0.7 ... 1.26 Us

Power consumption of motor AC/DC VA/W 135/135

Time required to charge the stored-energy mechanism at 1 Us s 10

Closing solenoid For data see above.

For motor andclosing solenoid

Short-circuit protectionSmallest permissible DIAZED fuse (gL operational class)/miniature circuit breaker with C characteristic;Motor and closing solenoid for the same rated control supply voltages

2 A TDz (slow)/1 A

Smallest permissible DIAZED fuse (gL operational class)/miniature circuit breaker with C characteristic (for differentrated control supply voltages)

At Us = 24 ... 30 VAt Us = 48 ... 60 VAt Us = 110 ... 125 V DC/110 ... 127 V ACAt Us = 220 ... 250 V DC/

208 ... 240 V AC

2 A2 A1 A

1 A

Solid-state release signals

Measuring accuracy of the solid-state release Protection functions according toEN 60947;current indication 10%;Measurement functionbase quantities 1 %;Measurement functionderived quantities 4 %

Auxiliary releases

UndervoltagereleasesUVR (F3) andUVR-td (F4)

Response values Pickup

Dropout

0.85 Us(circuit breaker can be closed)0.35 ... 0.7 Us(circuit breaker is tripped)

Operating range 0.85 ... 1.1

Extended operating range for battery operation At 24 V DC, 30 V DC,48 V DC, 110 V DC,

220 V DC

0.85 ... 1.26

Rated control supply voltage Us InstantaneousAC 50/60 HzDC

DelayedAC 50/60 HzDC

VV

VV

110 ... 127/208 ... 240/380 ... 41524/30/48/60/110/220 ... 2501)

110 ... 127; 208 ... 240; 380 ... 41548; 110 ... 125; 220 ... 250

Power consumption (pickup/uninterrupted duty) ACDC

VAW

20/520/5

Opening time of circuit breaker at Us = 0 ms 200- Version UVR (F3)

InstantaneousWith delay

msms

80200

- Version UVR-td (F8)With delay, td= 0.2 to 3.2 sReset through additional NC contact direct switching off

sms

0.2 ... 3.2100

Short-circuit protectionSmallest permissible DIAZED fuse (gL operational class)/Miniature circuit breaker with C characteristic

1 A TDz (slow) 1 A


30/59


31/59


32/59


General data

32 Siemens 2009

For the setting range of the operating currentIg see page 33.

Protection functions ETU15B ETU25B ETU27B

Parameterization by D D D & S

Functional overview of the solid-state release system

L

Overload protectionFunction can be switched on/off

--

--

--

Setting rangeIR =In ... 0.5-0.55-0.6-0.65-0.7-0.75-0.8-0.85-0.9-1

0.4-0.45-0.5-0.55-0.6-0.65-0.7-0.8-0.9-1

0.4-0.45-0.5-0.55-0.6-0.65-0.7-0.8-0.9-1

Switchable overload protection(I2t- orI4t-dependent function) -- -- --

Setting range for time-lag class tR atI2t 10 s fixed 10 s fixed 10 s fixed

Setting range for time-lag class tR atI4t -- -- --

Thermal image can be switched on/off -- -- --

Phase failure sensitivity -- at tsd = 20 ms (M) at tsd = 20 ms (M)

NNeutral conductor protection -- --

Function can be switched on/off -- --

N conductor setting rangeIN =In ... -- -- 1

S

Short-time delayed short-circuit protection --

Function can be switched on/off -- -- --

Setting rangeIsd =In ... -- 1.25-1.5-2-2.5-3-4-6-8-10-12 1.25-1.5-2-2.5-3-4-6-8-10-12

Setting range for delay time tsd -- 0-M-100-200-300-400 ms 0-M-100-200-300-400 ms

Switchable short-time delayed short-circuit protection(I2t-dependent function)

-- -- --

Setting range for delay time tsd atI2t -- -- --

Zone Selective Interlocking function -- -- --

I

Instantaneous short-circuit protection

Function can be switched on/off -- -- --

Setting rangeIi =In ... 2-3-4-5-6-7-8 Fixed for Ii 20 In, max. 50kA

Fixed for Ii 20 In, max. 50kA

G

Ground-fault protection -- -- Fixed mounted

Tripping and alarm function -- -- --

Tripping function can be switched on/off -- --

Alarm function can be switched on/off -- -- --

Detection of the ground-fault current through summationcurrent formation with internal or external neutral con-ductor transformer

-- --

Detection of ground-fault current through externalcurrent transformer

-- -- --

Setting range of the operating currentIg for release -- -- A-B-C-D-E

Setting range of the operating currentIg for alarm -- -- --

Setting range of the delay time tg -- -- 100-200-300-400-500 ms

Switchable ground-fault protection characteristiccurve (I2t-dependent function)

-- -- --

Setting range for delay time tg atI2t -- -- --

Zone Selective Interlocking ground-fault protect. func. -- -- --

Parameter set switchover

Switchable between parameter set A and B -- -- --

LCD

Alphanumeric LCD (4-line) -- -- --

Graphical LCD (24 V, ext. power supply required) -- -- --

Communication

CubicleBUS integrated -- -- --

Communication-capable through PROFIBUS DP -- -- --


Measurement-function capable with measurementfunction Plus

-- -- --

LED display

Solid-state release active

Alarm

ETU fault

L-release --

S-release --

I-release --

N-release -- --

G-release -- --

G-alarm -- -- --Release through extended protection function -- -- --

Communication -- -- --

Signals from signal switches with external CubicleBUS modules (relays)

Overload warning -- -- --

Load shedding, load receiving -- -- --

Leading signal overload trip 200 ms -- -- --

Temperature alarm -- -- --

Phase unbalance -- -- --

Instantaneous short-circuit release -- -- --

Short-time delayed short-circuit release -- -- --

Overload trip -- -- --

Neutral conductor release -- -- --

Ground-fault protection release -- -- --

Ground-fault alarm -- -- --

Auxiliary relay -- -- --

ETU fault -- -- --

R

NSE0_00888b

R

sd

sd

i

NSE0_00889a

g

g

NSE00890

NSE00891

Delay time figures given in ms. AvailableM = Motor protection, corresponds to 20 ms. -- Not available

D = Rotary coding switch OptionalD & S = Rotary coding and slide switchK = CommunicationM/K = Menu/communication


33/59


34/59


35/59


35Siemens 2009



Every solid-state release type and every setting has its own cha-racteristic curve. Only a selection is shown in the following. Thecharacteristic curves each show the largest and smallest settingrange of SENTRON 3WL circuit breakers with 1000 A rated cur-rent at 500 V rated voltage with various releases. In order to ob-tain a complete tripping characteristic, the relevant parts of thecharacteristics have to be combined.

The characteristic curves show the behavior of the solid-state re-lease when it is activated by a current that is already flowing be-fore the tripping operation. If the overcurrent tripping occurs im-mediately after switch on and the solid-state release is thereforenot yet enabled, the opening ime is extended, depending on thelevel of the overcurrent by up to 15 ms. In order to determine thebreak-times of the circuit breakers, approximately 15 ms mustbe added to the opening times shown for the arcing time.2)

Refer to the following table for tolerances.

The characteristic curves shown apply to ambient temperaturesat the circuit breaker between -5 and +55 C. The release can beoperated at ambient temperatures of -20 to +70 C (ETU76Bwith graphics display up to +55 C). An extended toleranceband can apply at these temperatures.

SENTRON 3WL circuit breaker with ETU45B and ETU76B solid-staterelease, L characteristic curve

SENTRON 3WL circuit breaker with ETU45B and ETU76B solid-staterelease

3wl manual

Documents