pg rec english

Product Guide

Rec15/25Automatic Circuit Recloser15kV, 16kA, 630A27kV, 12.5kA, 630A

Contents

1. Introduction 31.1 Abbreviations 5

2. Presentation 62.1 Product application field 72.2 Key benefits 72.3 Compliance 7

3. Product coding 83.1 Recloser coding 93.2 Recloser components coding 10

4. Technical parameters 135. Design and operation 17

5.1 Design 185.1.1 Outdoor switching module 185.1.2 Protective Tank 195.1.3 Current and Voltage Sensing 205.1.4 Main Contacts Position Indicator 205.1.5 Vacuum Circuit Breaker 205.1.6 Recloser control 225.1.7 Recloser Control Cubicle 235.1.8 Control cable (Umbilical) 255.1.9 Control Panel Module (CPM) 265.1.10 Recloser Control Module (RCM) 265.1.11 Power Supply Filter Module (PSFM) 275.1.12 Rechargeable Battery (BAT) 275.1.13 Bluetooth Module (BTM) 275.1.14 I/O Module (IOM) 28

5.2 Operation 295.2.1 Opening 295.2.2 Closing 29

6. Functionality 306.1 Protection 31

6.1.1 Overview 316.1.2 Protection Elements 31

6.2 Measurement 436.2.1 Overview 436.2.2 Inrush filter 44

6.3 Communication 456.3.1 Overview 456.3.2 Personal Computer Interface (PCI) 456.3.3 Telecommunication Interface (TCI) 456.3.4 Digital Input / Output Interface (IOI) 45

6.4 Telarm Dispatcher Interface (TDI) 466.5 Indication 47

6.5.1 Man-Machine Interface (MMI) 477. Application notes 48

7.1 Primary lines connections 497.1.1 Bushing Extensions 497.1.2 Terminal Connection Options 49

7.2 Secondary equipment 517.2.1 Voltage transformers (VT) 517.2.2 Remote Telecommunication Unit (RTU) 51

7.3 Connection of Control Cable 517.4 Auxiliary supply 51

Appendix 1. Type tests 52Appendix 2. Dimensions 55

1. Introduction

4

This Product Guide describes automatic circuit reclosers manufactured by Tavrida Electric.

Tavrida Electric autoreclosers are designed for overhead distribution lines or substations with rated voltage up to 27kV.

The main components of the autorecloser are:

Outdoor Switching Module (OSM)

The air insulated OSM incorporates a Tavrida Electric vacuum circuit breaker with single coil magnetic actuator in atank made of corrosion resistant aluminium alloy. The six main circuit bushings are made from UV stable polymer and are completely covered by silicone rubber bushing boots. Each bushing has built-in current and voltage sensors for protection and indication purposes.

Recloser control (RC)

The RC is a microprocessor based controller that provides protection, metering, data logging and communications functions.

Umbilical cable

The Umbilical cable provides connection between the OSM and RC.

This guide contains the recloser technical parameters, functionality and operation principles. The purpose of the document is to provide the necessary product information for application engineers and technical personnel.

List of related technical documents:

Document name Target audience Purpose of the document

Application guideUsers utilizing installed

equipmentProviding information on switching operations, required check-ups and maintenance, as well as service and disposal procedures

Production certificateCustomer procurement

serviceProviding information on supplied equipment serial numbers,

warranty terms and conditions

5

1.1 Abbreviations

ABR Automatic Backfeed RestorationBAT BatteryBF Bolted FaultBTM Bluetooth ModuleCC Control Cable (Umbilical)CLP Cold Load PickupCPM Control Panel Module CU Current unbalanceD DelayedDPS Door Position SwitchEF Earth Fault protection elementEF1 Low set Earth Fault protection element for Delayed tripsEF2 Low set Earth Fault protection element for Instantaneous tripsEF3 High set Earth Fault protection element for Instantaneous tripsEL Event LogI InstantaneousI/O Input/OutputIOI Input/Output InterfaceIOM Input/Output Module LCD Liquid Crystal DisplayHL Hot Line protection elementLP Load ProfileLS Loss of Supply protection elementME Measurement elementML Malfunction LogMMI Man Machine InterfaceMPM Main Processor ModuleOC Overcurrent protection elementOC1 Low set Overcurrent protection element for Delayed tripsOC2 Low set Overcurrent protection element for Instantaneous tripsOC3 High set Overcurrent protection element for Instantaneous tripsOCR Overcurrent protection element with reclosingOSM Outdoor Switching ModulePCI Personal Computer InterfacePSFM Power Supply Filter Module RC Recloser Control CubicleRCM Recloser Control ModuleRTC Real Time ClockRTU Remote Telecommunication UnitSCADA Supervisory Control And Data AcquisitionSD Source DetectorSEF Sensitive Earth FaultSEFR Sensitive Earth Fault with reclosingTEL Tavrida ElectricTCI Telecommunications InterfaceTDI Telarm Dispatcher InterfaceUF Under Frequency UV Under VoltageVRC Voltage Reclosing ControlVT Voltage TransformerVU Voltage unbalanceZSC Zone Sequence Coordination

2. Presentation

7

2.1 Product field application

The recloser can be applied in radial or loop overhead distribution lines. The main application purposes are:

Removing transient faults in overhead lines by performing autoreclosing; Isolating faults in the overhead line network; Performing backfeed restoration.

The recloser can also be used at substations feeding overhead distribution lines. It may be used as:

Substation outgoing feeder with autoreclosing functionality; Substation coupler breaker with backfeed restoration capability; Substation switchgear incoming breaker with overcurrent protection for busbar faults, undervoltage protec-

tion for backfeed restoration purposes and ability to accept transformer internal protection tripping com-mands.

2.2 Key benefits

Tavrida Electric reclosers provide the following competitive advantages:

Environmentally Friendly OSM15_Al_1 and OSM25_Al_1 are air insulated outdoor switching modules. Patented combined insulation does not use any insulation medium other than air. The design reliability is proven by the most severe climate and pollution tests in Koeberg Insulator Pollution Test Station (KIPTS) in South Africa.

Light Weight Tavrida Electrics light weight vacuum circuit breaker and robust aluminium tank result in a total weight of 72kg, making it the most lightweight outdoor switching module on the market. As the result shipment, handling and installation are dramatically simplified.

Highest Reliability 30,000 rated current and 50 full rated short-circuit O-CO operations without any maintenance make it the most reliable outdoor switching device on the market.

Optimized Measurement All OSMs are equipped with voltage sensors in all six bushings to measure voltages on both sides of a normally open recloser. It makes the recloser an ideal device for self-healing loop automation solutions. Non-saturable Rogowski coils for both phase and zero-sequence currents guarantee high accuracy over a wide measurement range. They measure 3-phase currents and residual current simultaneously.

2.3 Compliance

Tavrida Electric autoreclosers have been tested by world-known test centers.A list of test reports is presented in Appendix 1.

3. Product coding

9

Rec15_Al1_5(Par1_Par2_Par3_Par4_Par5_Par6)

Table 1 - Recloser coding description

Parameter Parameter description Applicable options Code

Par1 RC languageEnglish EN

Portuguese PT

Par2 Bluetooth module availabilityNone 0

Yes 1

Par3 Input/Output module availability

None 0

Input/Output module 100/220 VDC 220


Par4 Umbilical cable length

5 meters 5

7 meters 7

12 meters 12

Par5 Mounting bracket type

None 0

Contact your local sales representative to choose the option suitable for you

1

2

3

4

5

Par6 Application type

Default 0


1

2

Product group

OSM type

RC type

Par1Parameter describes language of Control panel menu.

Par2Parameter describes bluetooth module availability. Bluetooth Module provides point-to-point wireless connection between RC and the personal computer.

Par3Parameter describes availability and auxiliary voltage range of Input/Output module (IOM). For IOM information refer to clause 5.1.14 and Table 10.

Par4Parameter describes the length of Umbilical cable for connecting RC to OSM. For Umbilical information refer to clause 5.1.8

Par5Parameter describes availability and type of mounting kit. Contact your local sales representative to choose the option suitable for you.

Par6Parameter describes availability and type of additional recloser modifications performed for particular applications.Contact your local sales representative to choose the option suitable for you.

3.1 Recloser coding

10

Par. 1Parameter describes OSM modification versions. Version number 1 is applicable for manufacturing years up to 2014. Version number 2 is applicable for manufacturing years starting from 2014. Also parameter 1 is applicable for OSM with intermediate unit. Parameter 2 is applicable for OSM without intermediate unit (the electronics from an intermediate unit are transferred to the inside of the OSM). For details refer to drawings in Appendix 1.

Not specified parameter corresponds to OSM with intermediate unit.

OSM coding OSM15_Al_1(Par1)

Outdoor switching module

Rated voltage, kV

Tank material

OSM type

Table 2 - OSM coding description


Par1 OSM design codeOSM with intermediate unit 1

OSM without intermediate unit 2

3.2 Recloser components coding

Each OSM has the following nameplates: Serial number plate Nameplate

Nameplate

Serial number plate

Figure 1Nameplate of OSM

Figure 2Nameplate and serial number plate placement

Serial number plate contains information about OSM type and serial number.Nameplate contains OSM technical parameters.

11

Each RC has adhesive nameplate tagged on the internal door with information about RC type, serial number, date of manufacturing and order information.

Figure 3Nameplate of RC

Table 3 - RC coding description


Par1 Control panel languageEnglish EN

Portuguese PT

Par2 Bluetooth module availabilityNone 0

Yes 1

Par3 Input/Output module availability

None 0



Par4 Application option

Default 0


1

2

Par1Parameter describes language of Control panel menu.

Par2Parameter describes bluetooth module availability. Bluetooth Module provides point-to-point wireless connection between RC and the personal computer.

Par3Parameter describes availability and auxiliary voltage range of Input/Output module (IOM). For IOM information refer to clause 5.1.14 and Table 10.

Par4Parameter describes availability and type of additional recloser modifications performed for particular applications.Contact your local sales representative to choose the option suitable for you.

Nameplate

Figure 4RC nameplate placement

RC coding RC5_1(Par1_Par2_Par3_Par4)

Recloser control

RC type

12

Each Umbilical cable has a steel cable tie with serial number.

Figure 5Example of the Umbilical serial number cable tie

Control cable codingTwo different versions of Umbilical cable are applicable for different versions of OSM:

Umbilical_1(Par1)

Control cable name

Control cable type

Umbilical_1 is designed for connecting the RC5_1 with OSM15_Al_1(1) or OSM25_Al_1(1)

Table 4 - Umbilical coding description


Par1 Umbilical cable length

5 meters 5

7 meters 7

12 meters 12

Umbilical_3(Par1)

Control cable name

Control cable type

Umbilical_3 is designed for connecting the RC5_1 with OSM15_Al_1(2) or OSM25_Al_1(2)

Par4Parameter describes the Umbilical cable length connecting the RC to OSM. For Umbilical information refer to clause 5.1.8

Serial number cable tie

4. Technical parameters

14

Notes:1) 150kV BIL on request 2) In combination with the associated RC

Main technical data and recloser technical parameters are presented in tables below.

Table 5 - OSM technical parameters

Parameter OSM15_Al_1 OSM25_Al_1

Rated data

Rated maximum voltage (Ur) 15.5 kV 27 kV

Rated short-duration powerfrequency withstand voltage (Ud), 1 min dry 50 kV 60 kV

Rated short-duration powerfrequency withstand voltage, 10s wet 45 kV 50 kV

Rated lightning impulse withstand voltage (peak) (Up) 110 kV 125 kV 1)

Rated continuous current (Ir) 630 A

Rated cable-charging current switching 10 A 25 A

Rated line-charging current switching 2 A 5 A

Rated short-circuit breaking current (Isc) 16 kA 12.5 kA

Rated peak withstand current (Ip) 41.6 kA 32.5 kA

Rated short-time withstand current (Ik) 16 kA 12.5 kA

Rated duration of short circuit (tk) 4 s 4 s

Rated frequency (fr) 50/60 Hz

Switching performance

Mechanical life (CO-cycles) 30 000

Operating cycles, rated current (CO-cycles) 30 000

Electrical endurance, breaking current (O-CO cycles) 50

Closing time 2), not more than 77 ms

Opening time 2), not more than 32 ms

Break time 2), not more than 42 ms

Rated operating sequence 2) O-0.1s-CO-5s-CO-5s-CO

General information

Main circuit resistance < 85 Ohm < 95 Ohm

Weight 68 kg 72 kg

Altitude2000 m (derating according to ANSI

C37.60 applied above 1000m)

Humidity 100%, condensing

Solar Radiation 1.1 kW/m

Temperature Range -40 C ... +55 C

Type of driving mechanism Monostable magnetic actuator

Pollution level very heavy (as per IEC 60815)

15

Notes:1) Rogowski coil can measure current in a wide range but for the purpose of over-voltage protection suppressors are fitted in the intermediate unit. These suppressors chop the signal from Rogowski coil in case primary current exceeds 8 kA.

Table 6 - Sensors parameters

Parameter Phase current sensorsZero-sequence current

sensorVoltage sensors

Rated frequency 50 Hz, 60 Hz

Range where accuracy is provided 1-8000 1) A 4 ... 8000 1) A 0.3 16 kV

Accuracy at 20 C 0.5 % 1 %

Range of sensor coefficients at 20 C 1.95 2.04 V/kA 1.93 2.02 V/kA 0.11 0.13 V/kV

Notes:1) Applicable for the following sensors coefficient: current sensor - 2.0 V/kA voltage sensor - 0.135 V/kV

Table 7 - Protection accuracy

Parameter Basic errorRanges where accuracy

is guaranteed

Operational pickup current 1)

- for phase overcurrent elements- for earth overcurrent elements

2% or 2A, which is greater5% or 1A , which is greater

10-6000A4-1280A

Phase accuracy 2 at U1 0.5 kV and I1 40A

Operational pickup voltage 1) 1% or 0,1kV, which is greater 0.5 30kV

Operational pickup frequency 0.05Hz45 55Hz for Frated=50Hz55 65Hz for Frated=60Hz

Table 8 - Electromagnetic compatibility

Parameter Rated value Applicable standard

Rated power frequency voltage (1 min) 2 kV IEC 60255-5

Rated impulse voltage, kV at 0.5J 5 kV IEC 60255-5

Electrical fast transient/burst immunity 4 kV IEC 60255-22-4 (Level IV)

Surge immunity (applied to external AC voltage terminals)- common- transverse

4 kV2 kV

IEC 61000-4-5 (Level IV)

Control elements surge withstand capability (SWC) 125 kV (7 kA) IEEE C37.60-2003

Table 9 - Degree of protection

Component Degree of protection

Outdoor switching module IP65

Recloser cubicle IP54

Umbilical cable IP65

16

Table 10 - I/O Module (IOM) parameters

Digital inputs Value

Rated voltages of signal applied to digital inputs- for IOM-04- for IOM-03

12/24/30/48/60 V DC110/125/220 V DC

Pickup voltage of signal applied to digital inputs- for IOM-04- for IOM-03

Above 7 VAbove 100 V

Reset voltage- for IOM-04- for IOM-03

Below 3 VBelow 30 V

Maximum continuous voltage of signal applied to digital inputs- for IOM-04- for IOM-03

75 V275 V

Input resistance- for IOM-04- for IOM-03

3 kOhm125 kOhm

Recognition time, ms - not more 20

Reset time, ms - not more 20

Digital outputs Value

Rated voltage 250 VAC

Rated current 16 A

Breaking capacity DC1 (at L/R=1ms): 30/110/220 V 16/0.3/0.12 A

Minimum switching load 500 mW (10V/5mA)

Table 11 - Rechargeable Battery (BAT) parameters

BAT parameters Value

Type1)G26EPX EnerSys 0765-2003

sealed lead acid

Rated voltage 12 V

Rated capacity 26 Ah

Temperature range -40 C...+55 C

Maximum amount of recharging cycles from full discharge state 300

Relative capacity at different temperatures- at -40C- at -20C- at 0C- at +25C- at +40C- at +55C

25 %65 %84 %

100 %110 %120 %

Expected battery lifetime at average operating temperature, years- at +20C- at +25C- at +30C- at +40C

16106.52.7

Notes:1) Only the battery types described in the following guide can be used in the RC.

5. Design and operation

18

Figure 6General arrangement of the

OSM25_Al_1(1)

1. Terminal

2. Six HV silicone bushings

3. Current sensors built into the bushings

4. Vacuum circuit breaker

5. Protective tank

6. Mechanical position indicator

7. Manual trip operation mechanism

8. Protective lid with Harting connector

9. Support rail

2

1

3

4

5

6

7

8

9

Figure 7General arrangement of the

OSM15_Al_1(2)

1. Terminal

2. Six HV silicone bushings

3. Current sensors built into the bushings

4. Vacuum circuit breaker

5. Protective tank

6. Mechanical position indicator

7. Harting connector

8. Manual trip operation mechanism

9. Support rail

2

1

3

4

5

6

7

8

9

5.1 Design5.1.1 Outdoor switching module

The OSM is provided with six main circuit bushings manufactured from UV stable polymer. They are covered by light grey silicone rubber bushing boots which provide a creepage distance of 500mm for the 15.5kV and 860mm for the 27kV version. The difference between OSM versions is shown in Fig. 6 and 7.The bushings are marked by stickers with the terminal designation X1, X2, X3 for the default source side and X4, X5 and X6 for the default load side. The source and load side can be changed in the RC settings for radial applications.

19

5.1.2 Protective Tank

The OSM tank is made of corrosion resistant aluminium alloy.

Threaded holes (M12x30) on each side of the tank allow the OSM to be fixed to a variety of installation struc-tures. These threaded holes can also used to install a set of lifting lugs on the tank. The earthing provision (M12x30 threaded hole) is labelled for identification.

Mounting Provisions

Provisions for Lifting lugs

Earthing Provision

Mounting Provisions

Provisions for Lifting lugs

Earthing Provision

Figure 8OSM25_Al_1(1)

Figure 9OSM25_Al_1(2)

20

5.1.4 Main Contacts Position Indicator

The position indicator is located under a protective cover at the bottom of the tank and is clearly visible from the ground. The indicator colour is red when the OSM is closed and green when it is open.

Figure 10Position indicator

5.1.3 Current and Voltage Sensing

Each bushing has current and voltage sensors. Current sensing is carried out by Rogowski sensors. The sensors on the X1, X2, X3 terminals measure phase currents. The sensors on the X4, X5, X6 terminals have secondaries connected in series for residual current measurement. Capacitive sensors are used for voltage measurement on all six bushings.Sensor parameters are specified in "Technical Data" section of this guide.

OSM15(25)_Al_1(2) OSM15(25)_Al_1(1)

5.1.5 Vacuum Circuit Breaker

The OSM is equipped with the innovate Tavrida Electric vacuum circuit breaker. Tavrida Electric has simplified the mechanical structure of the vacuum circuit breaker to the greatest possible extent. It uses three single-coil magnetic actuators, one per pole. All switching elements of a pole are assembled along a single axis. All mecha-nical movements are therefore direct and linear. Three actuators are installed in a steel frame and mechanically linked by a synchronizing shaft.

Due to the design any failure of critical components, such as mechanical latching, gears, chains, bearings and levers, tripping and closing coils, motors to charge springs are completely avoided.

Tavrida Electric manufactures vacuum interrupters that combine small dimensions with an extremely long me-chanical and electrical lifespan. The use of a specially designed axial magnetic field distribution provides even current density over the contact surface and consequently substantial improvement of vacuum interrupting performance.Carefully selected contact material, expert contact design and optimized switching result in bounce-free closing.

The result is 30,000 C-O operations at rated current or 50 O-CO operations at maximum short-circuit breaking current without replacing or adjusting any parts of the circuit breaker.

Tavrida Electric vacuum circuit breaker are entirely maintenance free over a total life expectancy of at least 30years.

21

Figure 11View into the Vacuum Circuit Breaker

1. Upper terminal

2. Vacuum interrupter

3. Lower terminal

4. Movable contact with bellows

5. Flexible junction shunt

6. Drive insulator

7. Opening and contact pressure springs

8. Magnetic actuator (complete module)

9. Armature

10. Synchronizing shaft

11. Actuator coil

12. Interlocking pins

13. Auxiliary contacts

14. Frame

15. Support insulator

2

1

34

5

6

7

8910111213

14

15

22

5.1.6 Recloser control

Tavrida Electric Recloser Control provides the following advantages:

Recloser Control Cubicle Control panel with 6-lines-40-characters graphical LCD for clear events indication

Measurement The recloser control allows for wide measurement capabilities, including phase, neutral and sequence cur-

rents, phase, phase-to-phase and sequence voltages, phase and 3-phase active and reactive power and energy. Logging is provided for key measurement data.

ProtectionThe recloser control provides wide protection functionality. The protection incorporates unique features to signi-ficantly simplify the protection engineering process. See chapter "6.1 Protection" for details.

MonitoringHighly comprehensive log files with the following information: Event Log; Malfunction Log; Communication Log; Load Profile; Fault Profile; Change Messages; Protection Counters; Lifetime Counters; Log filling counters.

Communications Advanced communication functionality including support of different communication protocols and data

communication equipment including Bluetooth. Exceptional configuration flexibility (ability to apply different sets of local and remote communication inter-

faces)

Software PackageTavrida Electric Automated Relay Manager (TELARM) is designed for the specific needs of an electrical distributi-on network based on Tavrida Electric products. It is allows: Downloading logs, profiles, oscillograms, settings, etc.; Uploading protection, communication and system settings to the device; Recording logs (event, malfunction, communication etc.), provides detailed fault profile; Customizing control signal map for customers SCADA applications;

23

5.1.7 Recloser Control Cubicle

RC5_1 recloser control cubicle is made from aluminium, same as the OSM tank.

Figure 12RC5_1 with closed internal door

1. Three-point locking system

2. Rubber seals

3. Fixing rod

4. Output of internal installed Bluetooth Module

(with protective cap)

5. IP65 glands for Power supply cable

6. Anti-vandal shield of Control Cable

7. External door

8. Control panel module

9. Internal door

10. Thermal overcurrent circuit breakers

11. Dust proof drainage filter

12. IP65 glands for:

- I/O control cable ( 925 mm),

- Antenna ( 618 mm)

13. Earthing stud

14. Mounting brackets

8

9

10

11

12

13

14

1

2

3

4

5

6

7

Figure 13RC5_1 with open internal door

1. Door position switch

2. Remote telecommunication unit (RTU)

mounting plate

3. Place for Input/Output module (IOM)

5

6

7

4

2

1

3

4. Recloser Control Module (RCM)

5. Battery circuit breaker

6. Battery

7. Place for power outlet

24

1

2

3

1. Control cable terminal

2. Protective cover (anti-vandal shield)

3. Wing nuts

Figure 14

Door Position Switch

The RC5_1 housing provides umbilical cable protection from unauthorized disconnection. An anti-vandal shield is fixed from inside the housing with four wing nuts.

RC5_1 is equipped with a Door Position Switch which is used for disabling the CPM at closed RC, as well as SCADA indication of RC door position.

RC5_1 is equipped with different cable glands for: I/O cable or external RTU connections ( 925 mm) antenna ( 618 mm) power supply cable ( 618 mm)

Cable glands are delivered with plastic caps installed. The housing has provisions for protection against dust and water ingress.

1

2

3

1. Dustproof drainage filter

2. Plastic caps

3. Earthing stud

Figure 15

The Recloser Control Cubicle RC5_1 external door is equipped with padlocking provisions. The external door can be securely fixed in the open position in three positions - 60o, 90o and 130o. Padlock provision is capable of accepting a padlock shackle up to 12 mm diameter.

25

RC5_1 control cubicle consists of: Control Panel Module (CPM); Recloser Control Module (RCM); Power Supply Filter Module (PSFM); Input/Output Module (IOM); Bluetooth Module (BTM); Battery.

Table 12 - Standard and optional components of RC5_1

Module or Component Standard Optional

CPM RCM PSFM

Battery BTM IOM

5.1.8 Control cable (Umbilical)

Umbilical cable is a PVC coated steel armoured tube in which measurement cables from current and voltage sensors and control cables of the OSM pass to the control cubicle. Connection of umbilical cable to OSM and RC is performed using heavy duty connectors.

Standard cable length is 5, 7 or 12 meters.

Figure 16Umbilical cable

Figure 17Heavy duty connector

26

5.1.9 Control Panel Module (CPM)

The CPM module provides local control and indication functions to RC5_1. The CPM has an integrated USB interface for PC connection.

Connector CPM-RCMFront view Back viewUSB interface

5.1.10 Recloser Control Module (RCM)

RCM is responsible for all recloser functionality.

Figure 18View of CPM

Figure 19RCM connections with other RC modules

Figure 20RCM without connections

27

Earthing wires

5.1.11 Power Supply Filter Module (PSFM)

This module provides impulse noise protection for all internal modules of RC5_1.

Thermal overcurrent circuit breakers

WAGO plug XS1

Figure 21Power Supply Filter Module

5.1.12 Rechargeable Battery (BAT)

The rechargeable battery is used for backup supply in the RC5_1 in case of main auxiliary supply power loss.The power supply system is designed to provide optimum charging and long life.

5.1.13 Bluetooth Module (BTM)

Bluetooth module can be supplied with the RC as an option.The Bluetooth module provides point-to-point wireless connection between the RC and a personal computer.It is connected to RCM via a USB cable (Fig. 22).

Figure 22Bluetooth Module with its USB cable

Bluetooth Module

USB cable of Bluetooth module

The PSFM is connected to the RCM via a WAGO plug (Fig. 21). It incorporates two thermal overcurrent circuit breakers on the front panel (Fig. 21). These breakers protect auxiliary voltage inputs from overloads and short circuits.

28

5.1.14 I/O Module (IOM)

An IOM (Fig. 23) can be supplied with the RC cubicle as an option. It provides control and indication functions with the aid of digital inputs/outputs (Refer to Digital Input/Output Interface (IOI) in Communication section for further information of functionality). IOM contains twelve digital inputs and twelve digital outputs. Location of connectors (marked "15""18") with these inputs and outputs are shown in Fig. 24.

Figure 23Overall view of IO module

XP4

XP3

XP2

XP1

IOM

15

16

17

18

Figure 24Location of IOM connectors

2

3

4

5

6

7

+ Input 7

+ Input 8

+ Input 9

+ Input 10

+ Input 11

+ Input 12

"16" (XP3)

Digital inputs are represented with optocouplers (Fig. 25).

2

3

4

5

6

7

+ Input 1

+ Input 2

+ Input 3

+ Input 4

+ Input 5

+ Input 6

"18" (XP1)

Figure 25Digital inputs

Digital outputs are represented with bistable relays with changeover contacts as illustrated in Fig. 26.

23456

13

Output 7

Output 8

Output 9

Output 10

Output 11

Output 12

"15" (XP4)

789

1011

1415

23456

13

Output 1

Output 2

Output 3

Output 4

Output 5

Output 6

Common

"17" (XP2)

789

1011

1415

1

Figure 26Digital outputs

1Common 1Common

1Common

29

5.2 Operation

Figure 27Mechanical trip hook

5.2.1 Opening

Emergency opening

A mechanical trip hook is located in the bottom of the tank. When the hook is pulled down, the OSM is mecha-nically tripped, locked in the OPEN position and electrically interlocked against closing. An "OSM Coil Isolated" warning event is generated by recloser control to provide indication of the locked state. The OSM remains locked and cannot be operated until the trip hook is pushed back into the operating position.

Opening via MMI

To open the OSM main circuits push the green Open pushbutton labeled . The Open command is executed in both Local and Remote mode.

5.2.2 Closing

Closing via MMI

To close the OSM main circuits push the red Close pushbutton labeled . The command is only executed if the Control Mode is set to Local Control and mechanical trip hook is pulled up. If the Control Mode is set to Remote Control and/or mechanical trip hook is pulled down the Close command will not be accepted.

Figure 28RC5_1 Control Panel Module

Open pushbutton

Close pushbutton

OSM15(25)_Al_1(2) OSM15(25)_Al_1(1)

6. Functionality

31

6.1 Protection

6.1.1 Overview

The protection functionality is designed for the following key applications: Radial line recloser; Ring line recloser.

Radial line configuration covers the following types of faults: Short circuit. Phase-to-phase and three-phase short circuits, single-phase and double-phase earth faults; Bolted fault usually caused by incorrect operation; Highly resistive earth fault; Upstream broken wire; Downstream broken wire; Low system voltage caused by incorrect network operation mode, tap changer malfunctioning, undergene-

ration or islanding. The protection prevents sensitive load , such as motors, from overloading and damaging; Low system frequency caused by local undergeneration, islanding or global system events requiring for load

shedding; High system voltage caused by tap changer malfunctioning, overgeneration or islanding. The protection

prevents sensitive load from damaging; High system frequency caused by islanding.

In addition to the above-mentioned functions, Ring line configuration provides Loss of Supply and Automatic Backfeed Restoration functionality required for loop automation and self-healing schemes bringing increased network reliability compared to radial line distribution systems. Ring line configuration supersedes the Radial one and has two sets of protection element settings depending on the source side.

Protection elements against short circuit, resistive earth fault, low system voltage and low system frequency faults are provided with independent reclosing elements.

Ring mode of the recloser is governed by a unique setting-free source detector. The source detector is a con-stantly operating element that detects actual source side of the recloser and applies corresponding protection settings.

The reclosing elements as well as the Automatic Backfeed Restoration are controlled by the Voltage Reclosing Control, which checks at the compliance of general reclosing conditions: the power supply quality.

6.1.2 Protection Elements

Source Detector (SD)Source detector element has two main functions: Managing the settings of directional protection elements (ring operation mode); Managing the loss of supply protection with source actual state.The operation of the protection elements AR OC, HL, AR SEF, VU, CU, AR UV, AR UF, AR OV, AR OF and ABR depend on the source side identified. If a source is found on the Source+ side those elements use settings "Set +". If a source is found on the Source- side those elements use settings "Set -".

Bolted Fault (BF)This element provides instantaneous tripping when bolted fault conditions are detected. As it deals both with positive sequence voltage and current it provides better sensitivity regarding bolted faults than conventional highset overcurrent elements.

Loss of Supply (LS)This element is applicable for ring lines only and provides tripping upon loss of supply. This functionality is applicable for a sectionalizing recloser (or "feeder" in some philosophy) in order to support automatic backfeed restoration.

32

Cold Load Pickup (CLP)

When supply to a feeder is restored after an extended outage the load is higher than usual because all the ther-mostat controlled loads, such as heaters, refrigerators or air conditioners have turned on. The longer the period without supply the greater the loss of diversity and the higher the load current when supply is restored. Thepur-pose of the CLP element is to hold the load without tripping.

Phase Overcurrent (OC)

This element provides protection against phase-to-phase and three phase short circuits.

OC protection consists of six (6) individual overcurrent elements providing three stages of protection for both the Forward (Source+) and Reverse (Source-) powerflow directions: OC1+, OC1-, OC2+, OC2-, OC3+, OC3- OC1 Phase overcurrent low set element OC1 is designated to provide time delayed trips. It is enabled in any selected sequence in Overcurrent Reclosing element (Instantaneous I; Delayed D).

OC2 Phase overcurrent low set element OC2 is designated to provide instantaneous trips. If sequence step in Overcurrent Reclosing Element is set "D" (Delayed) OC2 element is disabled. If sequence step in Overcurrent Reclosing element is set "I" (Instantaneous) OC2 element is enabled.

OC3 Phase fault high set instantaneous element provides protection against phase high current faults with a reduced number of trips to lockout. If there is no intention to reduce the number of trips to lockout at high current faults, enabling this element is not recommended. TCC applied for OC1 and OC2 allows reduction of tripping time to any desired value at high currents.

Time-current curves supported by low set OC elements are described in Table 13.Settings for high set OC element are describes in Table 14

Earth Fault (EF)

This element provides protection against single phase and double phase earth faults.

EF protection consist of six (6) individual overcurrent protection elements providing three stages of protection for both the Forward (Source+) and Reverse powerflow (Source-) directions: EF1+, EF1-, EF2+, EF2-, EF3+, EF3-

EF1 Earth fault low set element EF1 is designated to provide time delayed trips. It is enabled in any selected sequence in Overcurrent Reclosing element (Instantaneous I; Delayed D).

EF2 Earth fault low set element EF2 is designated to provide instantaneous trips. If sequence step in Overcurrent Reclosing Element is set "D" (Delayed) EF2 element is disabled. If sequence step in Overcurrent Reclosing element is set "I" (Instantaneous) EF2 element is enabled.

EF3 Earth fault high set instantaneous element provides protection against high earth current faults with a reduced number of trips to lockout. If there is no intention to reduce the number of trips to lockout at high current faults, enabling this element is not recommended. TCC applied for EF1 and EF2 allows red uction of tripping time to any desired value at high currents. Like OC3 this element is also generally not applied for downstream recloser and for systems with resistively earthed neutral.

Time-current curves supported by low set EF elements are described in Table 13.Settings for high set EF element are describes in Table 14

Table 13 - TCC types

Setting Designation Range Default

Type of time current characteristic

TCC

ANSI: Extremely Inverse (EI), Moderately Inverse (MI), Very Inverse (VI) IEC: Extremely Inverse (EI), Very Inverse (VI), Inverse (I)Definite Time (TD) Custom: on request custom curves are available. Please contact your local Tavrida Electric representative.

TD

33

TCC can be uploaded to recloser control using TELARM configuration software.

Setting for elements equipped with TD, IEC and ANSI time current curves are described in Tables 1519.

Table 14 - High Set elements settings

Setting Designation Range Resolution Default

Operating mode Mode Enable/Disable n.a. Disable

Pickup current Ip 40-6000 A 1A 6000 A

Tripping time Tt 0.00-2.00s 0.01s 0.00 s

Table 15 - Settings for element equipped with TD TCC

Settings Designation Range Step size Factory defaults

Tripping time, sec Tt 0.00-100.00 0.01 0.00

Pickup current, A Ip 10-6000 1 100

Table 16 - Applicable IEC TCC and their parameters

TCC type Designation A n

Extremely Inverse IEC EI 80 2.0

Very Inverse IEC VI 13.5 1.0

Inverse IEC I 0.14 0.02

Table 17 - Settings for element equipped with IEC TCC


Asymptote current, A Ias 10-1280 1 100

Time multiplier Tm 0.01-15.00 0.01 1.00

Minimum time, sec Tmin 0.00-10.00 0.01 0.00

Maximum time, sec Tmax 1.00-100.00 0.01 10.00


Time adder, sec Ta 0.00-2.00 0.01 0.00

Reset time, sec Tres 0.02-2.00 0.01 0.02

Table 18 - Applicable ANSI TCC and their parameters

TCC type Designation A B D n

Extremely Inverse ANSI EI 28.2 1.217 29.1 2.0

Very Inverse ANSI VI 19.61 0.114 21.6 2.0

Moderately Inverse ANSI MI 0.0515 0.114 4.85 0.02

Table 19 - Settings for element equipped with ANSI TCC


Asymptote current, A Ias 10-1280 1 100

Time multiplier Tm 0.01-15.00 0.01 1.00

Minimum time, sec Tmin 0.00-10.00 0.01 0.00

Maximum time, sec Tmax 1.00-100.00 0.01 10.00


Time adder, sec Ta 0.00-2.00 0.01 0.00

34

Phase and Earth Overcurrent Reclosing (AR OC)The AR OC element provides reclosing initiated by tripping of one of OC1, OC2, OC3, EF1, EF2 or EF3 elements. The user set delay between trip and reclose is called "reclose time" (Tr) and can be set differently for each trip in a sequence. If the fault still exists, the recloser will trip again under protection. This will happen a number of times until the fault is cleared or the AR OC element reaches the end of the user defined reclose sequence. At this point the recloser remains open and will no longer reclose automatically. This is known as "lockout" and the recloser can only be closed by local or remote operator command, which clears the lockout condition.

AR OC settings are described in Tables 20, 21.

Table 20 - AR OC element settings for Recloser type = Radial


Number of trips to lockout Nt 1/2/3/4 n.a. 4

Number of highset trips to lockout Nhs 1/2/3/4 n.a. 1

Reclosing sequence Seq

For 4 trips to lockout: IIII/IIID/IIDD/IDDD/DDDD/DDDI/

DDII/DIII/IIDI/IDII/IDDI

For 3 trips to lockout: III/IID/IDD/DDD/DDI/DII/IDI

For 2 trips to lockout: II/ID/DD/DI

For 1 trip to lockout: I/D

n.a. IIDD

First closure mode * SST Normal/Accelerate/Decelerate n.a. Normal

First reclose time Tr1 0.10-180.00 s 0.01 s 1.00 s

Second reclose time Tr2 1.00-1800.00 s 0.01 s 10.00 s

Third reclose time Tr3 1.00-1800.00 s 0.01 s 30.00 s

Reset time Tres 1-180 s 1s 1s

Zone sequence coordination mode * ZSC mode Enable/Disable n.a. Enable

* - settings available only in inbuilt software version 2.49 and higher.

Table 21 - AR OC element settings for Recloser type = RingSetting Designation Range Resolution Default

Number of trips to lockout + Nt + 1/2/3/4 n.a. 4

Number of highset trips to lockout + Nhs + 1/2/3/4 n.a. 1

Reclosing sequence + Seq +






n.a. IIDD

First closure mode + * SST + Normal/Accelerate/Decelerate n.a. Normal

First reclose time + Tr1 + 0.10-180.00 s 0.01 s 1.00 s

Second reclose time + Tr2 + 1.00-1800.00 s 0.01 s 10.00 s

Third reclose time + Tr3 + 1.00-1800.00 s 0.01 s 30.00 s

Reset time + Tres + 1-180 s 1s 1s

Zone sequence coordination mode + * ZSC mode Enable/Disable n.a. Enable

Number of trips to lockout - Nt - 1/2/3/4 n.a. 4

Number of highset trips to lockout - Nhs - 1/2/3/4 n.a. 1

Reclosing sequence - Seq -






n.a. IIDD

35

* - settings available only in inbuilt software version 2.49 and higher.

First closure mode - * SST - Normal/Accelerate/Decelerate n.a. Normal

First reclose time - Tr1 - 0.10-180.00 s 0.01 s 1.00 s

Second reclose time - Tr2 - 1.00-1800.00 s 0.01 s 10.00 s

Third reclose time - Tr3 - 1.00-1800.00 s 0.01 s 30.00 s

Reset time - Tres - 1-180 s 1s 1s

Zone sequence coordination mode - * ZSC mode Enable/Disable n.a. Enable

Single shot to lockout algorithm is supported by the AR OC element. This function allows to trip the recloser to lockout (without autoreclosing) in case a fault has been detected during reset time after operator closing.

Zone Sequence Coordination The AR OC also provides Zone Sequence Coordination (ZSC). ZSC causes the AR OC element to step to the next count in the reclose sequence on reset of all protection elements if it detects a downstream protection device has operated. The functionality is required for applications where a fuse-saving philosophy is used.

Hot Line (HL)This element consists of two sub-elements, which provide protection against short circuit faults during Hot Line mainte-nance. It generally has more sensitive settings than corresponding OCR settings and it has no reclosing functions.

HL consists of two Overcurrent elements, one for Phase Overcurrent (HLOC) and one for Earth Fault (HLEF). Ope-ration of either element results in a trip to lockout.

HL settings are described in Tables 22-25.

Table 22 - HLOC element settings for Recloser type = Radial


Pickup current Ip 10-1280 A 1 A 10 A

Tripping time Tt 0.00-2.00 s 0.01 s 0.00 s

Table 23 - HLOC element settings for Recloser type = Ring


Pickup current + Ip + 10-1280 A 1 A 10 A

Tripping time + Tt + 0.00-2.00 s 0.01 s 0.00 s

Pickup current - Ip - 10-1280 A 1 A 10 A

Tripping time - Tt - 0.00-2.00 s 0.01 s 0.00 s

Table 24 - HLEF element settings for Recloser type = Radial




Table 25 - HLEF element settings for Recloser type = Ring






36

Sensitive Earth Fault (SEF)This element provides protection against a resistive earth faults.SEF settings are described in Tables 26, 27.

Table 26 - SEF element settings for Recloser type = Radial


Operating mode Mode Enable/Disable n.a. Enable



Table 27 - SEF element settings for Recloser type = Ring


Operating mode + Mode + Enable/Disable n.a. Enable



Operating mode - Mode - Enable/Disable n.a. Enable



Table 28 - AR SEF element settings for Recloser type = Radial


Number of trips to lockout Nt 1/2/3/4 n.a. 2

First reclose time Tr1 0.10-180.00 s 0.01 s 1.00 s

Second reclose time Tr2 1.00-180.00 s 0.01 s 10.00 s

Third reclose time Tr3 1.00-180.00 s 0.01 s 30.00 s

Reset time Tres 1-180 s 1 s 1 s

Table 29 - AR SEF element settings for Recloser type = Ring


Number of trips to lockout + Nt + 1/2/3/4 n.a. 2

First reclose time + Tr1 + 0.10-180.00 s 0.01 s 1.00 s

Second reclose time + Tr2 + 1.00-180.00 s 0.01 s 10.00 s

Third reclose time + Tr3 + 1.00-180.00 s 0.01 s 30.00 s

Reset time + Tres + 1-180 s 1s 1s

Number of trips to lockout - Nt - 1/2/3/4 n.a. 2

First reclose time - Tr1 - 0.10-180.00 s 0.01 s 1.00 s

Second reclose time - Tr2 - 1.00-180.00 s 0.01 s 10.00 s

Third reclose time - Tr3 - 1.00-180.00 s 0.01 s 30.00 s

Reset time - Tres - 1-180 s 1s 1s

Sensitive Earth Fault Reclosing (AR SEF)This element provides reclosing initiated by the SEF element. It also supports single shot to lockout and logical reset functionality.AR SEF settings are described in Tables 28, 29.

37

Voltage Unbalance (VU) This element provides protection of sensitive load against an upstream broken wire. It is generally applied when the upstream device cannot provide relevant protection.

VU settings are described in Tables 30, 31.

Table 30 - VU element settings for Recloser type = Radial


Tripping mode Mode Enable/Disable n.a. Disable

Voltage unbalance Uu 0.05-1.00 0.01 0.10


Table 31 - VU element settings for Recloser type = Ring


Tripping mode + Mode + Enable/Disable n.a. Disable

Voltage unbalance + Uu + 0.05-1.00 0.01 0.10


Tripping mode - Mode - Enable/Disable n.a. Disable

Voltage unbalance - Uu - 0.05-1.00 0.01 0.10


Table 32 - CU element settings for Recloser type = Radial



Current unbalance Iu 0.60-1.00 0.01 0.80


Current Unbalance (CU)This element provides protection against a downstream broken wire. It is generally applied for protection of three phase loads sensitive to current unbalance, for example, electrical motors.

CU settings are described in Tables 32, 33.

Table 33 - CU element settings for Recloser type = Ring


Operating mode + Mode + Enable/Disable n.a. Disable

Current unbalance + Iu + 0.60-1.00 0.01 0.80


Operating mode - Mode - Enable/Disable n.a. Disable

Current unbalance - Iu - 0.60-1.00 0.01 0.80


Voltage Reclosing Control (VRC)This element monitors the quality of high voltage power supply. It blocks reclosing initiated by any AR element when voltage and/or frequency do not meet user set values.

VRC settings are described in Tables 34, 35.

38

Table 34 - VRC element settings for Recloser type = RadialSetting Designation Range Default

Voltage unbalance mode VU control mode Enable/Disable Enable

Neutral voltage shift mode NVS control mode Enable/Disable Enable

Over voltage mode OV control mode Enable/Disable Enable

Under voltage mode UV control mode Enable/Disable Enable

Under frequency mode UF control mode Enable/Disable Enable

Voltage unbalance VUp 0.05-1.00 0.20

Neutral voltage shift (zero sequence voltage)

NVSp 0.05-1.000.40

Pickup overvoltage multiplier OVp 1.00-1.30 1.20

Pickup undervoltage multiplier UVp 0.60-1.00 0.80

Pickup underfrequency UFp45.00 - 49.99 for Frated=50Hz55.00 - 59.99 for Frated=60Hz

49.50 for Frated=50Hz59.50 for Frated=60Hz

Table 35 - VRC element settings for Recloser type = Ring

Setting Designation Range Default

Voltage unbalance mode VU control mode Enable/Disable Enable

Neutral voltage shift mode NVS control mode Enable/Disable Enable

Over voltage mode OV control mode Enable/Disable Enable

Under voltage mode UV control mode Enable/Disable Enable

Under frequency mode UF control mode Enable/Disable Enable

Voltage unbalance+ VUp+ 0.05-1.00 0.20

Neutral voltage shift+ (zero sequence voltage)

NVSp+ 0.05-1.00 0.40

Pickup overvoltage multiplier+ OVp+ 1.00-1.30 1.20

Pickup undervoltage multiplier+ UVp+ 0.60-1.00 0.80

Pickup underfrequency+ UFp+45.00 - 49.99 for Frated=50Hz 55.00 - 59.99 for Frated=60Hz

49.50 for Frated=50Hz 59.50 for Frated=60Hz

Voltage unbalance- VUp- 0.05-1.00 0.20

Neutral voltage shift- (zero sequence voltage)

NVSp- 0.05-1.00 0.40

Pickup overvoltage multiplier- OVp- 1.00-1.30 1.20

Pickup undervoltage multiplier- UVp- 0.60-1.00 0.80

Pickup underfrequency- UFp-45.00 - 49.99 for Frated=50Hz 55.00 - 59.99 for Frated=60Hz

49.50 for Frated=50Hz 59.50 for Frated=60Hz

Undervoltage (UV)This element provides protection against a low source voltage. UV settings are described in Tables 36, 37.

Table 36 - UV element settings for Recloser type = Radial



Pickup voltage multiplier Up 0.60-1.00 0.01 0.80


39

Table 37 - UV element settings for Recloser type = Ring



Pickup voltage multiplier + Up + 0.60-1.00 0.01 0.80



Pickup voltage multiplier - Up - 0.60-1.00 0.01 0.80


Undervoltage Reclosing (AR UV)This element provides reclosing initiated by the UV element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect coordination of VRC and UV pickup settings..

AR UV settings are described in Tables 38, 39.

Table 38 - AR UV element settings for Recloser type = Radial


Number of trips to lockout Nt 1/2 n.a. 1

Reclose time Tr 0.10-180.00 s 0.01 s 10.00 s

Overvoltage (OV)

This element provides protection against a high source voltage. Overvoltage element is available in inbuilt soft-ware versions 2.50 and higher.

OV settings are described in Tables 40, 41.

Table 39 - AR UV element settings for Recloser type = Ring


Number of trips to lockout + Nt + 1/2 n.a. 1

Reclose time + Tr + 0.10-180.00 s 0.01 s 10.00 s

Number of trips to lockout - Nt - 1/2 n.a. 1

Reclose time - Tr - 0.10-180.00 s 0.01 s 10.00 s

Table 40 - OV element settings for Recloser type = RadialSetting Designation Range Resolution Default


Pickup voltage multiplier Up 1.00-1.40 0.01 1.05

Tripping time Tt 0.10-100.00s 0.01s 10.00

Table 41 - OV element settings for Recloser type = RingSetting Designation Range Resolution Default

Operating mode+ Mode+ Enable/Disable n.a. Disable

Pickup voltage multiplier+ Up+ 1.00-1.40 0.01 1.05

Tripping time+ Tt+ 0.10-100.00s 0.01s 10.00

Operating mode- Mode- Enable/Disable n.a. Disable

Pickup voltage multiplier- Up- 1.00-1.40 0.01 1.05

Tripping time- Tt- 0.10-100.00s 0.01s 10.00

40

Overvoltage reclosing (AR OV)This element provides reclosing initiated by the OV element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect coordination of VRC and OV pickup settings. Overvoltage element is available in inbuilt software versions 2.50 and higher.

AR OV settings are described in Tables 42, 43.

Table 42 - AR OV element settings for Recloser type = Radial


Number of trips to lockout Nt 1/ 2 n.a. 1

Reclose time Tr 0.10-300.00s 0.01s 10.00

Table 43 - AR OV element settings for Recloser type = Ring


Number of trips to lockout+ Nt+ 1/ 2 n.a. 1

Reclose time+ Tr+ 0.10-300.00s 0.01s 10.00

Number of trips to lockout- Nt- 1/ 2 n.a. 1

Reclose time- Tr- 0.10-300.00s 0.01s 10.00

Underfrequency (UF)This element provides protection against a low system frequency. It is generally applied for under-frequency shedding.

UF settings are described in Tables 44, 45.

Table 44 - UF element settings for Recloser type = Radial:



Pickup frequency Fp45.00-50.00 Hz for rated frequency=50 Hz55.00-60.00 Hz for rated frequency=60 Hz

0.01 Hz45.00 Hz55.00 Hz


Table 45 - UF element settings for Recloser type = Ring



Pickup frequency + Fp +45.00-50.00 Hz for rated frequency=50 Hz55.00-60.00 Hz for rated frequency=60 Hz

0.01 Hz45.00 Hz55.00 Hz



Pickup frequency - Fp -45.00-50.00 Hz for rated frequency=50 Hz55.00-60.00 Hz for rated frequency=60 Hz

0.01 Hz45.00 Hz55.00 Hz


41

Underfrequency Reclosing (AR UF)This element provides reclosing initiated by the UF element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect coordination of frequency pickup, VRC and UF pickup settings.

AR UF settings are described in Tables 46, 47.

Table 46 - AR UF element settings for Recloser type = Radial




Table 47 - AR UF element settings for Recloser type = Radial






Overfrequency (OF)This element provides protection against a high system frequency. Overfrequency element is available in inbuilt software versions 2.58 and higher.

OF settings are described in Tables 48, 49.

Table 48 - OF element settings for Recloser type = Radial:



Pickup frequency Fp50.00-55.00 Hz for rated frequency=50 Hz60.00-65.00 Hz for rated frequency=60 Hz

0.01 Hz55.00 Hz65.00 Hz


Table 49 - OF element settings for Recloser type = Ring



Pickup frequency + Fp +50.00-55.00 Hz for rated frequency=50Hz60.00-65.00 Hz for rated frequency=60Hz

0.01 Hz55.00 Hz65.00 Hz



Pickup frequency - Fp -50.00-55.00 Hz for rated frequency=50Hz60.00-65.00 Hz for rated frequency=60Hz

0.01 Hz55.00 Hz65.00 Hz


42

Automatic Backfeed Restoration (ABR)Automatic Backfeed Restoration is used to automatically close a normally open recloser if it detects a source (via SD element) on the alternative source side. This allows the recloser to be used as a tie point in an automation system.

This element is only applicable for ring line recloser type and provides automatic backfeed restoration when relevant conditions are met.

ABR element settings are described in Table 52.

Overfrequency Reclosing (AR OF)This element provides reclosing initiated by the OF element. It also provides single shot to lockout functionality to avoid multiple reclosing in case of incorrect coordination of frequency pickup, VRC and OF pickup settings. Overfrequency element is available in inbuilt software versions 2.58 and higher.

AR OF settings are described in Tables 50, 51.

Table 50 - AR OF element settings for Recloser type = Radial




Table 51 - AR OF element settings for Recloser type = Radial






Table 52 - ABR element settings


Operating mode Mode Disable/Both/Only+/Only- n.a. Disable

Restoration time + Tr + 0.10-180.00 s 0.01 s 60.00 s

Restoration time - Tr - 0.10-180.00 s 0.01 s 60.00 s

43

6.2 Measurement6.2.1 Overview

The Main Processor takes the analogue signals from OSM current and voltage sensors, converts them into digi-tal format, and filters it for Harmonic content. The RMS values of the converted signals are used for protection and indication as shown in the table below.

Table 53 - Applicability of RMS values of the signals

1) Residual current In is equal to three times the zero sequence current Io2) When all three phase to earth voltages on any side drop below approximately 0.5kV, prior frequency is remembered by the measurement element.

Applied filtering effectively rejects higher harmonics and avoids overshooting. For phase currents anti-inrush filtering is additionally applied. This continuously operating filter reliably rejects transformer inrush current. Forfurther information regarding filtering please refer to section below.

Value Designation Range Resolution

Applicability

Protec-tion

Indica-tion

Phase currents Ia, Ib, Ic 0...7000A 1A

Residual current 1) In 0...7000A 1A

Positive sequence current I1 0...7000A 1A

Negative sequence current I2 0...7000A 1A

Positive sequence voltage measured from Source + side

U1+ 0...18kV 0.1kV

Positive sequence voltage measured from Source - side

U1- 0...18kV 0.1kV

Negative sequence voltage measured from Source + side

U2+ 0...18kV 0.1kV

Negative sequence voltage measured from Source - side

U2- 0...18kV 0.1kV

Frequency measured from Source + side 2) F+ 40...65Hz 0.01Hz

Frequency measured from Source - side 2) F- 40...65Hz 0.01Hz

Single-phase power factor PFa, PFb, PFc 0...0.01 0.01

Three-phase power factor PF3ph 0...0.01 0.01

Phase-to-earth voltages measured from Source + side

Ua+, Ub+, Uc+ 018kV 0.1kV

Phase-to-earth voltages measured from Source - side

Ua-, Ub-, Uc- 018kV 0.1kV

Phase-to-phase voltages measured from Source + side

Uab+, Ubc+, Uac+

030kV 0.1kV

Phase-to-phase voltages measured from Source - side

Uab-, Ubc-, Uac- 030kV 0.1kV

Positive sequence active power P1 065535kW 1kW

Single-phase active power Pa, Pb, Pc 065535kW 1kW

Three-phase active power P3ph 065535kW 1kW

Single-phase reactive power Qa, Qb, Qc 065535kVAr 1kVAr

Three-phase reactive power Q3ph 065535kVAr 1kVAr

Single-phase active energy Wa, Wb, Wc 09999999kWh 1kWh

Three-phase active energy W3ph 09999999kWh 1kWh

Single-phase reactive energy Ea, Eb, Ec 09999999kVArh 1kVArh

Three-phase reactive energy E3ph 09999999kVArh 1kVArh

44

6.2.2 Inrush filter

Reclosers described in the current product guide incorporate a unique inrush filter. This allows filtering of ma-gnetizing currents occurring at energizing transformers or distribution feeders with step-down-transformers.In contrast to the widely used inrush restraint, which blocks the operation of protection for the period of inrush, the filter leaves all protection active and sensitive to faults for the whole period of line energizing. The advantages are:

This feature makes it possible to select the settings of current-based protection elements based on actual load and fault levels, not considering any side effects due to transformer load energizing;

In case of after maintenance closing or performing backfeed restoration for a faulty feeder part the fault clea-ring time is significantly reduced as all protection elements operate correctly without any delays.

Figures 29 and 30 demonstrate a comparison of current measurement result at load energizing captured by a recloser without and with inrush filter enabled.

Figure 29Basic frequency phase currents RMS.

No inrush filter applied

100

0.20.150.10.0500

20

40

60

80

0.350.30.25

time, s

0.4

Cur

rent

, A

Figure 30Basic frequency phase currents RMS.

Tavrida Electric inrush filter applied

25

0.20.150.10.0500

5

10

15

20

0.350.30.25

time, s

0.4

Cur

rent

, A

45

6.3 Communication6.3.1 Overview

Indication and control are provided through the following interfaces: Personal Computer Interface (PCI) Telecommunication Interface (TCI) Digital Input/Output Interface (IOI) TELARM dispatcher Interface (TDI)

In the Local mode the Recloser is controlled via Control Panel Module (CPM) or Personal Computer Interface (PCI). In the Remote mode the Recloser is controlled via TCI, TDI or IOI. Indication is provided via all interfaces in both modes.

6.3.2 Personal Computer Interface (PCI) The PCI provides Indication and control via a PC (with installed TELARM software). The connection is establis-hed through a USB port located on the front the Control Panel Module (CPM), via RS-232 on the RCM or via Bluetooth module (BTM).

The PCI provides the following functionality (refer to TELARM software): Uploading/Downloading of data via PC Uploading inbuilt software via PC

Uploading/Downloading Data via PCData can be uploaded/downloaded via PC (refer also to description of the on-line mode of TELARM software) when the communication link is established. The communication link is password protected. The password is uploaded from the PC during the first communication session and stored in the MPM flash memory. If the control signal "Erase passwords" has been activated the password is erased. A new password can be uploaded from the PC during the next communication session.

Uploading Inbuilt Software via PCNew Inbuilt software for RC can be uploaded via PC with installed TELARM software.

6.3.3 Telecommunication Interface (TCI)

The TCI element provides control and indication via RTU connected to RS-232 port located on the Recloser Con-trol Module.

The SCADA system can connect to the RTU unit via Radio modem, Phone modem, GSM modem, RS485-RS232 converter or directly. USB interface is not purposed of SCADA applications.

The Communication Protocols available are DNP3, Modbus and IEC 60870-5-104.

6.3.4 Digital Input / Output Interface (IOI)

The IOI provides control and indication via digital Input-Output Module (IOM). The IOM provides 12 digital in-puts and 12 digital outputs for SCADA control and indication. Each input/output function is individually custo-mizable.

46

TDI allows remote connection of TELARM software package to multiple reclosers with RC5_1 control cubicles for control and supervision. Connection via Internet or Local Area Network (LAN) is available. Physical connection of RC5_1 to the Internet can be done via wireless connection - GPRS modem (see Fig. 31) or wired connection - USB-Ethernet adapter (see Fig. 32).

Both RC5_1 recloser control(s) and PC(s) with TELARM software connect to a separate computer with installed RC Internet Server software (RCIS). This software provides communication between PC and multiple RC5_1. RCIS itself is a Windows service. Connection between TELARM software and RCIS is protected with SSL encryption. Individual certificates are issued for each PC with TELARM which will connect to RCIS.

Figure 31Structure of the system with wireless connection

Figure 32Structure of the system with wired connection

6.4 Telarm Dispatcher Interface (TDI)

47

LCD Display

1 2 5

11

6

7

8

10

3 4

9

1. TEL Logo

2. Title string

3. Label of Indication data, Control

data or Settings

4. Path

5. Context icon

6. Title Bar

7. Menu Bar

8. Status Bar

9. Date and Time

10. Parameter values of Indication data,

Control data or Settings

11. Scroll Bar

Figure 34Liquid Crystal Display (LCD)

6.5 Indication6.5.1 Man-Machine Interface (MMI)

The MMI provides control and indication via the Control Panel Module (CPM) if the CPM is enabled. If the CPM is disabled no control and indication functions are supported by the MMI.

Figure 33Control Panel Module (CPM)

Fast Key Pushbuttons

11. Malfunction Log

12. Event Log

13. Protection ON/OFF

14. Earth Fault ON/OFF

15. Sensitive Earth Fault ON/OFF

16. Reclosing ON/OFF

17. Hot Line ON/OFF

18. Backfeed Restoration ON/OFF

19. Active (Protection) Group

1. LCD

2. USB Port

General Control Pushbuttons

3. ON / OFF / Test

4. Control Mode

5. Closed

6. Open

LCD Control Pushbuttons

7. LCD Contrast

8. Navigation

9. Enter

10. Escape

11 12 4 5 6

1

3

7

13

14

15

2

10

9

16

17

18

19

8

The Title bar is shown in all menus and include the following elements: TEL logo icon Title string defining menu type Path to the current menu Context icon

7. Application notes

49

U-bolt

Nut

Cramp

Plain washer

Spring lock washer

Figure 39

7.1 Primary lines connections

7.1.1 Bushing Extensions

OSM bushing extensions (Fig. 35, 36) have cylinder endings with milled cable connection surfaces. This surface provides reliable contact area for cable or conductor connection. All parts are tin plated and allow both alumi-num and copper conductor connection. Terminal connectors are used to fix the cables.

Bushing extension of 12 and 15.5 kV OSM Bushing extension of 27 kV OSM

Bushing extensions have threaded inserts on butt-end (Fig. 37).Inserts are covered by plastic plugs (Fig. 38) that shall be removed before connecting lugs.

Figure 35 Figure 36

Figure 37 Figure 38

Insert

Plastic plugs

7.1.2 Terminal Connection Options

U-bolt Terminal ConnectorsU-bolt connector (Fig. 39) provides reliable connec-tion of cable conductors with 35 to 240 mm2 cross section. Each OSM package includes a set of 12 connectors as a standard.

One connector is enough to connect conductors up to 90 mm2 (Fig. 40). Two clamps shall be used to connect 120 mm2 and greater cross section conduc-tors (Fig. 41).

Tightening torque of connector nuts is 201 Nm.

Figure 40

Figure 41

50

If diameter of cable used is more than 10 mm then the cone end of each cover shall be cut to the corresponding diameter to fit the cable tightly (Fig. 44).

Figure 42

Figure 43

Figure 44

If cable lugs are used for connection they shall have 10.5 mm holes.

Bolt

Terminal connectorsL-shaped clamp (Fig. 45) provides reliable connection of cable conductors with up to 240 mm2 cross section. Kit of this type of connectors can be ordered separate-ly as RecKit_Connector_1.

Figure 45

Connectors are fixed with bolts M10x25 to the butt-end of bushing extension. Tightening torque of 302 Nm shall be applied (Fig. 46).

Figure 46

Terminal connector

Plain washer

Spring lock washer

Cable lug with two holes is fixed to the clamp with bolts M12. Tightening torque of 302 Nm shall be applied. Protective covers are not installed in this case (Fig. 47).

Figure 47

Lug connectionLugs can be used to connect cables from 16 to 240mm2. Lugs are fixed with bolts M10x25. Tighte-ning torque of 302 Nm shall be applied. Protective covers are not installed in this case (Fig. 48).

Figure 48

Protective covers can be used to protect connections against environment (Fig. 42, 43).

51

7.2 Secondary equipment7.2.1 Voltage transformers (VT)

An additional voltage transformer can be used for auxiliary power supply of recloser. The primary voltage of the VT should correspond to the network where the recloser is installed and the secondary voltage should match the range of recloser auxiliary power supply (see "7.3 Auxiliary supply" for reference). TEL sales representatives can provide VTs for the recloser, as well as solutions for their installation. Contact your local sales representative for further information.

7.2.2 Remote Telecommunication Unit (RTU)

The space available in RC5_1 for RTU mounting on the mounting tray is 300w x 175d x 60h mm. The RC provides 5...15VDC auxiliary power supply voltage. Two RS232 ports are provided at the rear of recloser control: port "5" (TDI) for connection of GPRS modem communicating with remote TELARM and for local RS-232 connec-

tion with TELARM. port "6" (TCI) for connection of RTU communicating with SCADA.The RTU shall be mounted the special tray through mounting holes drilled by the customer.

Connection of Power Supply CablesThe RC cubicle can be fitted with two separate AC/DC supplies. It allows connection of auxiliary voltage in the range 85265 V AC/DC.

Figure 49Auxiliary supply connections inside PSFM

L N L N E L N

AC1 Outlet AC2

Pins 10-18

Pins 1-9

AC1 Connector

Earthing Connector

AC2 Connector

AC1 Earthing Jumper

AC2 Earthing Jumper

7.3 Control Cable connectionConnect the control cable to the plug in the base of the recloser and secure it using the integral clamping arrangement. To connect the Control cable to RC: Open external and internal door and remove the bottom panel. Unscrew four wing nuts inside the housing (Fig. 14). Remove the protective cover (anti-vandal shield) (Fig. 14). Connect Control cable. Install the protective cover on its regular position and fix it with four wing nuts.

7.4 Auxiliary supply

Appendix 1. Type tests

53

Type tests of Rec15_Al1_5

Standard Chapter Test nameTest center

nameTest report

IEEE C37.60-2012 6.2.6.1Power-frequency withstand voltage

test (dry)PowerTech PowerTech_18490-09

IEEE C37.60-2012 6.2.6.1Power-frequency withstand voltage

test (wet)PowerTech PowerTech_18490-09

IEEE C37.60-2003 6.7 Partial discharge tests PowerTech PowerTech_18490-09

IEEE C37.60-2012 6.2.6.2Lightning impulse withstand voltage

testPowerTech PowerTech_18490-09

IEEE C37.60-2003 6.7 DC withstand voltage test PowerTech PowerTech_18490-09

IEEE C37.60-2012 6.111Control electronic elements surge

withstand capability testsPowerTech PowerTech_18490-09

IEEE C37.60-2012 6.107 Surge current tests PowerTech PowerTech_18490-09

IEEE C37.60-2012 6.4Measurement of the resistance of the

main circuitPowerTech PowerTech_18919-21-00

IEEE C37.60-2012 6.5 Temperature-rise tests PowerTech PowerTech_18919-21-00

IEEE C37.60-2012 6.101Line charging and cable charging

current testsPowerTech PowerTech_18930-26

IEEE C37.60-2003 6.3.2.1 Load switching tests PowerTech PowerTech_18930-26

IEEE C37.60-2003 6.3.2.3Transformer magnetizing current

switching testsPowerTech PowerTech_18930-26

IEEE C37.60-2012 6.109 Mechanical duty tests PowerTech PowerTech_18919-21-REP4

IEEE C37.60-2012 6.105 Minimum tripping current tests PowerTech PowerTech_18919-21-REP3

IEEE C37.60-2012 6.108 Time-current tests PowerTech PowerTech_18919-21-REP2

IEEE C37.60-2012 6.103Rated symmetrical interruption test

(standard operation duty)KEMA KEMA_109-04

IEEE C37.60-2012 6.102 Making current tests KEMA KEMA_109-04

54

Type tests of Rec25_Al1_5

Standard Chapter Test nameTest center

nameTest report

IEEE C37.60-2012 6.2.6.1 Power-frequency withstand vol-tage test (dry)

CESI CESI_A8026525

ESKOM specification - CESI CESI_B1009180

IEEE C37.60-2012 6.2.6.1Power-frequency withstand vol-

tage test (wet)

CESI CESI_A8026525

ESKOM specification - CESI CESI_B1009180

CEMIG specification - KEMA KEMA Final TDT 1473-10 V1

IEEE C37.60-2003 6.7 Partial discharge tests CESI CESI_A8034569

IEEE C37.60-2012 6.2.6.2Lightning impulse withstand

voltage test

CESI CESI_A8026525

IEEE C37.60-2012 6.2.6.2 KEMA KEMA Final TDT 1473-10 V1

ESKOM specification - CESI CESI_A9021639

IEEE C37.60-2012 6.6Short time withstand current and

peak withstand current testsCESI

CESI_A8028049CESI_A9007127

IEEE C37.60-2012 6.4Measurement of the resistance of

the main circuitCESI CESI_A8027496

IEEE C37.60-2012 6.5 Temperature-rise tests CESI CESI_A8027496

IEEE C37.60-2012 6.101Line charging and cable charging

current testsCESI

CESI _A8028049CESI_A9007127

IEEE C37.60-2003 6.3.2.1 Load switching tests CESICESI _A8028049CESI_A9007127

IEEE C37.60-2012 6.109 Mechanical duty tests CESI CESI_A8034408

IEEE C37.60-2012 6.105 Minimum tripping current tests CESI CESI_A8027496

IEEE C37.60-2012 6.108 Time-current tests KEMA KEMA Final TDT 1510-10 V1

IEEE C37.60-2012 6.103Rated symmetrical interrupting

current testsCESI

CESI _A8028049CESI_A9007127

IEEE C37.60-2012 6.102 Making current tests CESICESI _A8028049CESI_A9007127

IEC 62271-1 6.10.6Power-frequency withstand vol-tage test on auxiliary and control

circuitsCESI CESI_A8034569

IEC 60664IEC 60255-5

-Lightning impulse withstand vol-tage test on auxiliary and control

circuitsCESI CESI_A8034569

IEC 60068-2-1 - Cold test - operational KEMA KEMA Final TIC 1471-12 V1

IEC 60068-2-2 - Dry heat test - operational KEMA KEMA Final TIC 1471-12 V1

IEC 60068-2-30 -Cyclic temperature with humidity

test - operationalKEMA KEMA Final TIC 1471-12 V1

EDP_07-0969 rev 1F - Battery test KEMA KEMA Final TIC 1471-12 V1

IEC 60529 - Enclosure protection test KEMA KEMA Final TIC 1471-12 V1

IEC 60870-5-104 Ed.2 - Communication protocol test KEMAKEMA Final TIC 1471-12 V1

KEMA 12-01304

ESKOM specification - Pollution test (KIPTS) KIPTS KIPTS 31-07-2010

Appendix 2. Dimensions

56

Dimens ions of the OSM15_Al_1(1) and OSM25_Al_1(1)

Figure 50OSM15_Al_1(1) Dimensions

Table 54 - OSM15_Al_1(1) and OSM25_Al_1(1) dimensions

Rated voltage, kV

Dimensions, mm

Weights, kgCreepage distance

Minimum taut string distance

15.5 500 202 68

27 860 202 72

Dimens ions of the OSM25_Al_1(2)


57

Table 55 - OSM15_Al_1(2) and OSM25_Al_1(2) dimensions

Rated voltage, kV

Dimensions, mm

Weights, kgCreepage distance

Minimum taut string distance

15.5 500 202 68

27 860 202 72





58

Figure 54Dimensions of RC_5_1

Dimens ions of the RC

59

Dimens ions of the Umbilical cable

Table 56 - Umbilical cable characteristics

Part number L, m Weights, kg

Umbilical_3(5) 5 4.5

Umbilical_3(7) 7 6.5

Umbilical_3(12) 12 11.2

Figure 55Dimensions of Umbilical cable

60

Dimens ions and Weights of Terminal Connectors

Figure 56Terminal connector

Weight: 0.3 kg

Figure 57U-bolt terminal connector

Weight: 0.3 kg

This document is copyright and is intended for users and distributors of Tavrida Electric product. It contains information that is the intellectual property of Tavrida Electric and the document, or any part thereof, should not be copied or reproduced in any form without written permission from Tavrida Electric.Tavrida Electric applies a policy of ongoing development and reserves the right to change product without notice. Tavrida Electric does not accept any responsibility for loss or damage incurred as a result of acting or refraining from action based on information in this Product Guide.

AustraliaTavrida Electric Australia Pty Ltd.5/490 Frankston Dandenong RoadCarrum Downs Victoria 3201AustraliaPhone: +61 3 97867444Fax: +61 3 90119681E-Mail: [email protected]: www.tavrida.com.au

ChinaTavrida Electric Beijing Ltd.First Floor West, Building 11, No. 28 Yuhua Road,Area B, Beijing Airport Industrial Zone,101300 Beijing, ChinaPhone: +86 (10) 80492474/-5474Fax: +86 (10) 80497114E-Mail: [email protected]: www.tavrida.cn

GermanyTavrida Electric GmbHGeorgstr. 788069 TettnangGermanyPhone: + 49 (0) 7542 9467851Fax: + 49 (0) 7542 9467861E-Mail: [email protected]: www.tavrida.de

IndiaTavrida Electric India Private Limited15 NC, Block-A, New AliporeKolkata - 700 053West Bengal, IndiaPhone: +91 33 2488 1715/3260 8634Fax: +91 33 2488 1766E-Mail: [email protected]: www.tavrida.in

South AfricaTavrida Electric Africa (Pty) Ltd. Cnr. Van Dyk and Commissioner StreetsBoksburg East, GautengRepublic of South AfricaPhone: +27 11 9142199Fax: +27 11 9142323E-Mail: [email protected]: www.tavrida.co.za

SwitzerlandTavrida Electric AGRheinweg 48200 SchaffhausenSwitzerlandPhone: + 41 (0) 52 630 26 00Fax: + 41 (0) 52 630 26 09E-Mail: [email protected]: www.tavrida.ch

Brasil Tavrida Electric do BrasilAv. Ireno da Silva Venncio, 199GP04A - ProtestantesVotorantim / SPPhone: + 55 (15) 3243-2555Fax: + 55 (15) 3243-4233E-Mail: [email protected]: www.tavrida.com.br

1. Introduction1.1 Abbreviations

2. Presentation2.1 Product application field2.2 Key benefits2.3 Compliance

3. Product coding3.1 Recloser coding3.2 Recloser components coding

4. Technical parameters5. Design and operation5.1 Design5.1.1 Outdoor switching module5.1.2 Protective Tank5.1.3 Current and Voltage Sensing5.1.4 Main Contacts Position Indicator5.1.5 Vacuum Circuit Breaker 5.1.6 Recloser control5.1.7 Recloser Control Cubicle5.1.8 Control cable (Umbilical)5.1.9 Control Panel Module (CPM)5.1.10 Recloser Control Module (RCM)5.1.11 Power Supply Filter Module (PSFM)5.1.12 Rechargeable Battery (BAT)5.1.13 Bluetooth Module (BTM)5.1.14 I/O Module (IOM)

5.2 Operation5.2.1 Opening5.2.2 Closing

6. Functionality6.1 Protection6.1.1 Overview6.1.2 Protection Elements

6.2 Measurement6.2.1 Overview6.2.2 Inrush filter

6.3 Communication6.3.1 Overview6.3.2 Personal Computer Interface (PCI)6.3.3 Telecommunication Interface (TCI) 6.3.4 Digital Input / Output Interface (IOI)

6.4 Telarm Dispatcher Interface (TDI)6.5 Indication6.5.1 Man-Machine Interface (MMI)

7. Application notes7.1 Primary lines connections7.1.1 Bushing Extensions7.1.2 Terminal Connection Options

7.2 Secondary equipment7.2.1 Voltage transformers (VT)7.2.2 Remote Telecommunication Unit (RTU)

7.4 Connection of Control Cable 7.3 Auxiliary supplyAppendix 1. Type testsAppendix 2. Dimensions

pg rec english

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