ECP 11-0511a Schneider RN2, RN2c and RE2c Test Form

Schneider RN2, RN2c and RE2c Test Form

Document Number: ECP 11-0511a

Version: 5.0

Date: 27/02/2018

Schneider RN2, RN2c and RE2c Test Form

Substation Name

Substation Number

Voltage

Switchgear

Installed Mode

Free-standing

()

Transformer-mounted

()

Switchboard Number

Manufacturer

Schneider

Serial Number

Type (RN2/RN2c/RE2c)

Protection CTs

FPI CT Ratios in Use

Ratio in Use

RSW1

RSW2

TLF

Rating

Transformer Rating

kVA

Shunt Trip Coil (if fitted)

20-48V DC

()

110-240V AC/DC

()

Preliminary Checks

()

Disconnect the umbilical cable from the RTU (if fitted)

Visual inspection satisfactory (no visible signs of damage etc)

Earthing satisfactory

SF6 gas pressure satisfactory

Functional/Interlock Checks

()

Open and close switches

Earth switches cannot be operated when service selected

Switch/circuit-breaker cannot be operated when earth selected

Open and close earth switches

Test access cannot be opened when switch/circuit-breaker in On and Off position

Test access can be opened when earth switch closed

Switch/circuit-breaker cannot be operated when test access open

Motorised actuator operation satisfactory using an RTU simulator (LPN Remsdaq RTU only)

Transformer Winding Insulation Resistance using Test Voltage from ECS 11-0006 (transformer-mounted units only)

HV windings to earth (LV windings connected together and to earth)

M

LV windings to earth (HV windings connected together and to earth)

M

Switchgear Continuity Test

RSW1

RSW2

CB

Terminals Under Test

Continuity

TM*

FS*

TM*

FS*

RSW1 to RSW2

RSW1 to RSW2 to CB

Closed

Closed

Open

Closed

L1 - L1

L1 - L1 - L1

L2 - L2

L2 - L2 - L2

L3 - L3

L3 - L3 - L3

Open

Closed

L1 - L2 (RSW1)

L2 - L3 (RSW1)

RSW1

RSW2

CB

Terminals Under Test

Continuity

Earthed

Open

Open

RSW1

L1 - E

L2 - E

L3 - E

Open

Earthed

Open

RSW2

L1 - E

L2 - E

L3 - E

* TM - transformer-mounted and FS - free-standing.

HV Insulation Tests using Test Voltage from ECS 11-0006

RSW1

RSW2

CB

Terminal

Voltage (kV)

Duration (min)

IR (M)

Under Test

Earthed

TM*

FS*

RSW1

RSW2

CB(FS* only)

Closed

Closed

Open

Closed

L1

L2, L3

L2

L1, L3

L3

L1, L2

Open

L1, L2, L3

L1, L2, L3

L1, L2, L3

Closed

Open

Open

L1, L2, L3

L1, L2, L3

* TM - transformer-mounted and FS - free-standing.

FPI CTs Insulation Resistance using 1kV Test Voltage(test from CT wiring terminal block)

Disconnect FPI (if fitted)

()

RSW1

RSW2 (if fitted)

Remove CT wiring earth link

D190 - D170

()

D190 - D270

()

L1, L2, L3

D111, D131, D151 - Earth

M

D111/2, D131/2, D151/2 - earth

M

Replace CT wiring earth link

D190 - D170

()

D190 - D270

()

FPI CTs Loop Continuity(test from CT wiring terminal block)

RSW1

RSW2 (if fitted)

L1

D111 - D170

D111/2 - D170/2

L2

D131 - D170

D131/2 - D170/2

L3

D151 - D170

D151/2 - D170/2

Reconnect FPI (if fitted)

()

Figure 1 – Customer Trip Connections (18, 19 & 20)

Protection CTs Insulation Resistance using 1kV Test Voltage

Remove CT wiring earth link

C70 - C90

()

CTs, AC trip coils and TLFs

C70 - Earth

M

Replace CT wiring earth link

C70 - C90

()

Protection CTs Loop Continuity(test CT and trip coil from TLF ratio terminal block with test link removed)

Remove shorting link and test link

()

100/5 Ratio

50/5 Ratio

L1

C110 - C70

C210 - C70

L2

C130 - C70

C230 - C70

L3

C150 - C70

C250 - C70

Replace shorting link and test link

()

C110-C130-C150-C70-C210-C230-C250

100/5 50/5

Test Link

C90-C70

Primary Injection Test (free-standing units only)

Earth Fault Release Test

Remove TLFs and replace with shorting links

()

RSW1

RSW2

CB

Conductors Under Test

CT Ratios

RN2 Trip Range

RN2c Trip Range

Trip Current

RSW1

CB

Closed

Open

Closed

L1

L1

50/5

20 - 26.5A

19 - 28A

A

100/5

25 - 31A

24 - 33A

A

L2

L2

50/5

20 - 26.5A

19 - 28A

A

100/5

25 - 31A

24 - 33A

A

L3

L3

50/5

20 - 26.5A

19 - 28A

A

100/5

25 - 31A

24 - 33A

A

Overcurrent Release Test

Remove TLF shorting-links, connect shorting-link between L1, L2, L3 on CB

()

RSW1

RSW2

CB

Conductors Under Test

Short Conductors

CT Ratios

RN2 Trip Range

RN2c Trip Range

Trip Current

RSW1

CB

Closed

Open

Closed

L1 – L2

L1, L2, L3

50/5

20 - 25A

20 - 25A

A

100/5

30 - 36A

30 - 36A

A

L2 - L3

L1, L2, L3

50/5

20 - 25A

20 - 25A

A

100/5

30 - 36A

30 - 36A

A

Secondary Injection Test (transformer-mounted units only)

Earth Fault Release Test

Remove TLFs and replace with shorting links

()

RSW1

RSW2

CB

Test Connections

CT Ratios

RN2 Trip Range

RN2c Trip Range

Trip Current

Open

Open

Closed

C31 - C70

50/5

2 - 2.65A

1.7 - 2.8A

A

100/5

1.25 - 1.55A

1.1 - 1.65A

A

Overcurrent Release Test

Remove shorting links

()

RSW1

RSW2

CB

Test Connections

CT Ratios

RN2 Trip Range

RN2c Trip Range

Trip Current

Open

Open

Closed

C11 - C31

50/5

1.6 - 2.2A

1.6 - 2.2A

A

100/5

1.4 - 2.0A

1.4 - 2.0A

A

C31 - C51

50/5

1.6 - 2.2A

1.6 - 2.2A

A

100/5

1.4 - 2.0A

1.4 - 2.0A

A

Note: If the circuit-breaker does not operate when the injected current is gradually applied then the maximum value of current should be applied instantaneously.

Shunt Trip and Emergency Trip (if fitted)

Check correct shunt trip coil voltage is selected

()

Test

Coil

Terminals

Test Voltage

CB Trips

Apply 70% (dc) or 85% (ac) of coil rated voltage

20-48V DC

47 - 48

V

()

110-240V AC/DC

47 - 49

V

()

Apply 110% Voltage of coil rated voltage

20-48V DC

47 - 48

V

()

110-240V AC/DC

47 - 49

V

()

Check emergency trip button operates circuit-breaker

()

Final Checks

()

Check correct CT ratio selected

Check correct TLF rating selected and fitted

Check all links are replaced and secure

Ensure FPI CT shorting-link(s) are replaced if CTs are not used or not connected to FPI or RTU

Reconnect umbilical cable to RTU (if fitted)

Asset data form completed and submitted

Test Equipment

Make/Type

Serial Number

Calibration Date

Certification

()

All tests have been completed satisfactorily

Comments

Commissioning Engineer

Signature

Date

The completed test form shall be left on-site in a plastic wallet and in secure location. A copy of the completed test shall be sent to the relevant ART mailbox.

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THIS IS AN UNCONTROLLED DOCUMENT, THE READER MUST CONFIRM ITS VALIDITY BEFORE USE

Document Number: ECP 11-0511a

Version: 5.0

Date: 27/02/2018

Schneider RN2, RN2c and RE2c Test Form

Document Number: ECP 11-0511a

Version: 5.0

Date: 27/02/2018

© UK Power Networks 2018 All rights reserved 7 of 7

–Schematic DiagramsRN2 Schematic Diagram

RN2c/RE2c Schematic Diagram

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