Lucy VRN6a with Argus 7SR11 Relay Test Form / Document Number: ECP 11-0512g
Version: 2.0
Date: 22/03/2017

Lucy VRN6a with Argus 7SR11 Relay Test Form

Substation Name
Substation Number
Voltage
Switchgear
Installed Mode / Free-standing / () / Transformer-mounted / ()
Switchboard Number / Manufacturer / Lucy
Serial Number / Type / VRN6a
Protection CTs
CT Ratio (400/200/1)
Relay
Serial Number
Shunt Trip Coil (if fitted)
24-110V DC/110-240V AC / ()
Protection Settings (specified by planner/designer)
Overcurrent Settings / Earth Fault Settings
Setting Current / Setting Current
Curve / Curve
Time Multiplier / Time Multiplier
Highset Setting Current / Highset (or SEF) Setting Current
Highset Time / Highset (or SEF) Time
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/earth star bar cannot be opened when switch/circuit-breaker in On/Off
Test access/earth star bar can be opened when earth switch closed
Switch/circuit-breaker cannot be operated when test access open
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
Switch/Circuit- breaker Position / Terminals Under Test / Continuity
RSW1 / RSW2 / CB / TM* / FS*
TM* / FS* / RSW1 to RSW2 / RSW1 to RSW2 to CB
Closed / Closed / Open / Closed / L1 - L1 / L1 - L1 - L1 / 
Closed / Closed / Open / Closed / L2 - L2 / L2 - L2 - L2 / 
Closed / Closed / Open / Closed / L3 - L3 / L3 - L3 - L3 / 
Closed / Open / Closed / L1 - L2 (RSW1) / 
Closed / Open / Closed / 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 / 
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
Closed / Closed / Open / Closed / L2 / L1, L3
Closed / Closed / Open / Closed / L3 / L1, L2
Open / Closed / Open / Closed / L1, L2, L3 / L1, L2, L3 / L1, L2, L3
Closed / Open / Open / Open / L1, L2, L3 / L1, L2, L3
* TM - transformer-mounted and FS - free-standing.
RSW1 FPI CT Tests (test from marshalling box – refer to Figure 1 and Figure 2)
Disconnect CT wires C410/1, C430/1 and C450/1 from the left-side of the shorting block / ()
Check earth continuity / C510/1 - C530/1 - C550/1 - earth / ()
Disconnect wire C90/1 / ()
Measure earth insulation resistance / C510/1 - C530/1 - C550/1 - earth / M
Measure L1 CT loop continuity / C410/1 - C510/1 / 
Measure L2 CT loop continuity / C430/1 - C530/1 / 
Measure L3 CT loop continuity / C450/1 - C550/1 / 
Reconnect wire C90/1 / ()
Check earth continuity / C510/1 - C530/1 - C550/1 - earth / ()
Reconnect CT wires C410/1, C430/1 and C450/1to left-side of shorting block / ()
RSW2 FPI CT Tests (test from marshalling box – refer toFigure 1 and Figure 2)
Disconnect CT wires C410/2, C430/2 and C450/2 from the left-side of the shorting block / ()
Check earth continuity / C510/2 - C530/2 - C550/2 - earth / ()
Disconnect wire C90/2 / ()
Measure earth insulation resistance / C510/2 - C530/2 - C550/2 - earth / M
Measure L1 CT loop continuity / C410/2 - C510/2 / 
Measure L2 CT loop continuity / C430/2 - C530/2 / 
Measure L3 CT loop continuity / C450/2 - C550/2 / 
Reconnect wire C90/2 / ()
Check earth continuity / C510/2 - C530/2 - C550/2 - earth / ()
Reconnect CT wires C410/2, C430/2 and C450/2to left-side of shorting block / ()

Figure 1 – FPI CT Connections in Marshalling Box

Figure 2 – FPI CT Overview Schematic Drawing

Refer to Appendix A for FPI schematic diagrams.

Protection CTs Insulation Resistance using 1kV Test Voltage
(test from marshalling box – refer to Figure 4 and Figure 5 overleaf)
Check circuit-breaker selector switch is in the service position / ()
Remove relay from the case / ()
Remove CT wiring earth link / C70 - C90 / ()
Measure the insulation resistance / C70 - C90 (Earth) / M
Replace CT wiring earth link / C70 - C90 / ()
Protection CTs Loop Continuity
(from CT wiring terminal block)
Disable the automatic protection CT shorting by separating the contacts in the relay housing ‘s shown in Figure 3 / ()
Measure L1 CT continuity / C11 - C70 / 
Measure L2 CT continuity / C31 - C70 / 
Measure L3 CT continuity / C51 - C70 / 
Re-enable protection CT shorting / ()

Figure 3 – Disable Protection CT Shorting

Relay Case Resistance
Measure the resistance between the relay case and the switchgear earth / 
Insert relay back into case / ()

Figure 4 – Marshalling Box

Figure 5 – Protection Connections in Marshalling Box

Figure 6: Secondary Injection Test Points (46,47,48 & 51)

Figure 7: Customer Inter-trip Connections (41 & 42)

Using The Protection Relay as an FPI Function.

When the RMU T-Off is used to supply another RMU as part of an interconnected network, the protection relay can be configured to be used as an FPI (Fault Path Indicator).

For the FPI function setting install the test protection settings detailed within this test form.

Once the test settings are installed, follow the procedure below.

Follow the procedure below to remove the trip output function from the relay to the circuit breaker on the RMU, the protection operated alarm output must remain in place as this alarm output goes back to the RTU and ultimately onwards to UKPN main control to provide an indication that the FPI function has operated on the T-off from the RMU.

To disable the CB tripping output from the relay, binary output 3 (BO3) must be disabled within the output logic of the relay, leaving binary output 4 (BO4) still active and enabled which is the FPI operated alarm function that goes back to the RTU.

Starting at the home screen on the protection relay, follow the steps below to disable BO3 (tripping output to CB). The Lucy Electric RMU protection relay will come from the Lucy Electric factory with the binary outputs BO3 and BO4 already enabled for CB tripping and protection alarm operated respectively.

From main menu:

↓ x8 / Output Configuration
→ x2, ↓x1
ENTER x1, ↑/↓
ENTER x1
↓ x4
ENTER x1, ↑/↓
ENTER x1
↓ x1
ENTER x1, ↑/↓
ENTER x1
↓ x1
ENTER x1, ↑/↓
ENTER x1
↓ x1
ENTER x1, ↑/↓
ENTER x1 / Active Settings Group 1
To increase/decrease binary values. Set to none
To confirm setting
51-1
To increase/decrease values. Set to B04, L1-2
To confirm setting
50-1
To increase/decrease values. Set to B04, L1-2
To confirm setting
51N-1
To increase/decrease values. Set to B04, L6
To confirm setting
50N-1
To increase/decrease values. Set to B04, L6
To confirm setting
CANCEL x4 / To return to initial start-up screen
Protection CT Ratio
Remove CT ratio plate from front panel and reverse to show correct CT ratio applied / ()
Select the appropriate CT ratio / CT Ratio / Shorting Link Across Terminals / Setting
200/1 / 4, 5, 6, 7 / 20-400A / ()
400/1 / 1, 2, 3, 4 / 40-800A / ()
Test Protection Settings
Apply the following temporary settings to the relay(refer toAppendix A for guidance) / ()
Overcurrent Settings / Earth Fault Settings
I> / 80A / 200/1 / 0.4 In / Ie / 60A / 200/1 / 0.3 Ien
400/1 / 0.2In / 400/1 / 0.15Ien
Delay Type / IDMT / Delay Type / IDMT
Idmt / IEC NI / Idmt / IEC NI
Tms / 1.5 / Tms / 1.5
I> / 4.0 x In / Ie / 2.0 x In
I> / No / Ie / No
Relay Operation - Primary Injection Test
Increase current until ALARM is displayed on the LCD. Reset the relay and, if necessary, close the circuit breaker before each test
Overcurrent Pickup Test
RSW1 / RSW2 / CB / Conductors Under Test / Short Conductors / I> Setting / Calculated Pickup Current
(1.1 x I>) / Actual Pickup Current
RSW1 / CB
Closed / Open / Closed / L1 - L2 / L1, L2, L3 / 80A / 88A / A
Closed / Open / Closed / L2 - L3 / L1, L2, L3 / 80A / 88A / A
Earth Fault Pickup Test
RSW1 / RSW2 / CB / Conductors Under Test / Ie> Setting / Calculated Pickup Current
(1.1 x Ie>) / Actual Pickup Current
RSW1 / CB
Closed / Open / Closed / L1 / L1 / 60A / 66A / A
Closed / Open / Closed / L2 / L2 / 60A / 66A / A
Closed / Open / Closed / L3 / L3 / 60A / 66A / A
In-service Protection Settings
Apply the in-service protection settings as specified by the planner/designer to the relay and record them below (refer toAppendix A for guidance) / ()
Overcurrent Settings / Earth Fault Settings
CT Ratio
Primary Setting Current / Primary Setting Current
I> (Yes/No) / Ie> (Yes/No)
I> (Primary Setting Current ÷ CT Ratio) / Ie> (Primary Setting Current ÷ CT Ratio)
IDMT Curve Type / IDMT Curve Type
Tms / Tms
Highset Primary Setting / Highset Primary Setting
I> (Yes/No) / Ie> (Yes/No)
I> (Highset Primary Setting ÷ CT Ratio) / Ie> (Highset Primary Setting ÷ CT Ratio)
tI / tIe
In-service Trip Settings
Apply trip settings to the relay – every element used above requires the corresponding trip command to be set to Yes (refer toAppendix A for guidance) / ()
Trip tI / Trip tIe
Trip tI / Trip tIe
Table A - Calculate Injection Currents / Overcurrent Setting / Earth Fault Setting
Setting Current (I> orIe>) / (I>) / (Ie>)
2 x Secondary Setting Current
5 x Secondary Setting Current
Highset (I> orIe>) / (I>) / (Ie>)
Table B - Calculate Operating Times / Overcurrent Setting / Earth Fault Setting
Curve / (I>) / (Ie>)
Time Setting / (Tms) / (Tms)
(tI>) / (tIe>)
Tripping time at 2x secondary current
Curve SI / (Tms x 10s) + 0.09s / s / s
Curve VI / (Tms x 13.5s) + 0.09s / s / s
Curve EI / (Tms x 26.67s) + 0.09s / s / s
Tripping time at 5x secondary current
Curve SI / (Tms x 4.28s) + 0.09s / s / s
Curve VI / (Tms x 3.38s) + 0.09s / s / s
Curve EI / (Tms x 3.33s) + 0.09s / s / s
Tripping time at I>, Ie
Overcurrent Highset / tI> + 0.09s / s / s
Earth Fault Highset (SEF) / tIe> + 0.09s / s / s
Relay Operation - Secondary Injection Test
Connect timer circuit to terminals 33 (L3/3) and 35 (L5/3) in the marshalling cabinet (contact closed when CB open) / ()
Overcurrent Test
Setting / Calculated Injection Current
(from table A) / Calculated Operating Time
(from table B) / Actual Operating Times
C11 - C31 / C31 - C51 / C51 - C11
2x / A / s / s / s / s
5x / A / s / s / s / s
Highset / A / s / s / s / s
Earth Fault Test
Setting / Calculated Injection Current
(from table A) / Calculated Operating Time
(from table B) / Actual Operating Times
C11 - C72 / C31 - C72 / C51 - C72
2x / A / s / s / s / s
5x / A / s / s / s / s
Highset / A / s / s / s / s
SEF* / A / s / s / s / s
Shunt Trip and Emergency Trip (if fitted)
Check correct shunt trip coil voltage is available / ()
Test / Coil / Marshalling Box Terminals / Test Voltage / CB Trips
Apply 70% (dc) or 85% (ac) of coil rated voltage / 24-110V DC/
110-240V AC / 41 - 42 / V / ()
Apply 110% of coil rated voltage / 24-110V DC/
110-240V AC / 41 - 42 / V / ()
Check emergency trip button operates circuit-breaker / ()
Final Checks / ()
Check correct protection settings applied
Check relay reset
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
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.

© UK Power Networks 2017 All rights reserved1 of 12

Lucy VRN6a with Argus 7SR11 Relay Test Form / Document Number: ECP 11-0512g
Version: 2.0
Date: 22/03/2017

Appendix A– Argus 7SR11

A.1Introduction

The Argus 7SR11 is a three phase overcurrent and earth fault protection relay. Settings are applied and fault reports read using the LCD display and the control buttons on the front panel.

A.2Front Panel

A.3Relay Front Panel Navigation

The basic menu structure flow diagram is shownin A.66 after the following relay front button description. This diagram shows the main modes of Display, Settings Mode, Instrument Mode, Fault Data Mode and Control Mode. Relay programming procedure is described in A.4

When the relay leaves the factory all data storage areas are cleared and the settings set to default as specified in the settings document.

When the relay is first energised the user is presented with the screen description as shown in A.2

A.4Relay Programming Procedure

For example, applying the following typical settings to a Argus 7SR11 relay used with 200/1 CTs:

Phase Overcurrent / Setting
51-1 Element / Enabled
51-1 Setting / 0.4xIn
51-1 Char / IEC-NI
51-1 Time Multiplier / 1.5
Instantaneous Overcurrent / Setting
50-1 Element / Enabled
50-1 Setting / 4.0xIn
50-1 Delay / 0.5s
Earth Fault (Derived E/F) / Setting
51N-1 Element / Enabled
51N-1 Setting / 0.3xIn
51N-1 Char / IEC-NI
51N-1 Time Multiplier / 1.5
Instantaneous Earth Fault / Setting
50N-1 Element / Enabled
50N-1 Setting / 2.0xIn
50N-1 Delay / 0.00s

A.4.1Guide

↓ x3 = push down button three times.

ENTER x1 = push enter button once, etc.

↑/↓ = use either up or down to toggle to the desired value

Step 1 – Set CT ratio

This is only done once relevant to the CT ratio setting required. The example below is for a CT ratio of 200/1

↓ x3 / CT/VT Configuration
→ x1, ↓ x1 / Phase CT Ratio Primary
ENTER x1, ↑/↓ / To increase/decrease value until correct CT primary is shown (200)
ENTER x1 / To confirm setting
↓ x1 / Phase CT Ratio Secondary
ENTER x1, ↑/↓ / To increase/decrease value until correct CT secondary is shown (1)
ENTER x1 / To confirm setting
↓x2 / Earth CT Ratio Prim
ENTER x1, ↑/↓ / To increase/decrease value until correct CT primary is shown (200)
ENTER x1 / To confirm setting
↓ x1 / Earth CT Ratio Secondary
ENTER x1, ↑/↓ / To increase/decrease value until correct CT secondary is shown (1)
ENTER x1 / To confirm setting
CANCEL x3 / To return to initial start-up screen

A.4.2Functions

This is only done once relevant to the functional setting required.

↓ x4 / Function Configuration
→ x1, ↓ x1 / Derived E/F
ENTER x1, ↓ x1, ENTER x1 / To Enable the Derived E/F (Earth fault)
↓ x1, ENTER x1, ↑ x1, / To Disable the Measured E/F
ENTER x1 / To confirm setting
CANCEL x3 / To return to initial start-up screen

A.4.3Step 2 – Overcurrent

Ensure that the cancel button has been pressed three times to start from first initial start-up screen.

↓ x5 / Current Protection
→ x2, ↓ x2 / 51-1 Element
ENTER x1, ↓ x1,ENTER x1 / To enable the overcurrent element
↓ x1, ENTER x1 / 51-1 Setting
↑/↓ / To increase/decrease value. Set to 0.4In
ENTER x1 / To confirm settings
↓ x1 / 51-1 Curve Characteristic
ENTER x1
↑/↓ / To increase/decrease value. Set to IEC-NI
ENTER x1 / To confirm setting
↓ x1 / 51-1 Time Multiplier
ENTER x1
↑/↓ / To increase/decrease value. Set to 1.5
ENTER x1 / To confirm setting
CANCEL x4,
↓x8 / To return to initial start-up screen
Output Configuration
→x2, ↓x5, ENTER x1 / 51-1
→x2 / To move cursor to Binary Output B03
↑/↓ / To enable/disable Binary Output B03
→ x1
↑/↓
ENTER x1 / To move cursor to Binary Output B04
To enable/disable Binary Output B04
To confirm Binary Outputs
CANCEL x4 / To return to initial start-up screen

A.4.4Step 3 – Instantaneous Overcurrent

↓x5 / Current Protection
→ x2, ↓ x11, ENTER x1 / 50-1 Setting
↓/↑ / To increase/decrease value. Set to 4.0xIn
ENTER x1 / To confirm setting change
↓x1 / 50-1 Delay
ENTER x1
↑/↓ / To increase/decrease value. Set to 0.5
ENTER x1 / To confirm setting change
CANCEL x4 / To return to initial start-up screen

A.4.5Step 4 – Earth Fault

↓x5, → x1 / Phase Overcurrent
→ x1, ↓x2 / 51-1 Element
ENTER x1, ↓ x1, ENTER x1 / To enable Overcurrent protection
CANCEL x1, ↓ x1 / Derived E/F
→ x1 / 51N-1 Element
ENTER x1, ↑ x1, ENTER x1 / To enable E/F protection
↓ x1, ENTER x1 / 51N-1 Setting
↓/↑ / To increase/decrease value. Set to 0.3xIn
ENTER x1 / To confirm setting change
↓x1 / 51N -1 Curve Characteristic
ENTER x1
↑/↓ / To increase/decrease value. Set to IEC-NI
ENTER x1 / To confirm setting
↓x1 / 51N -1 Time Multiplier
ENTER x1
↑/↓ / To increase/decrease value. Set to 1.5
ENTER x1 / To confirm setting
CANCEL x4, ↓x8 / Output Configuration
→x2, ↓x7, ENTER x1 / 51N-1
→x2 / To move cursor to Binary Output B03
↑/↓
→ x1 / To enable/disable Binary Output B03
To move cursor to Binary Output B04
↑/↓
ENTER x1 / To enable/disable Binary Output B04
To confirm Binary Outputs
CANCEL x4 / To return to initial start-up screen

A.4.6Step 5–Instantaneous Earth Fault

↓x5 / Current Protection
→ x1, ↓ x1 / Derived E/F
→ x1, ↓x9, ENTER x1 / 50N-1 Setting
↓/↑ / To increase/decrease value. Set to 2.0xIn
ENTER x1 / To confirm setting change
↓x1 / 50N -1 Delay
ENTER x1
↑/↓ / To increase/decrease value. Set to 0.0
ENTER x1 / To confirm setting change
CANCEL x4 / To return to initial start-up screen

The required relay settings have now been applied.

A.5Communication Port

To set the relay using a communication port the following is required:

  • PC with Reydisp Evolution Version 7.1.5.6 or later Installed. (This can be downloaded from the Siemens website and found under the submenu ‘Software’) This software requires windows 2000-service pack 4 or above, or windows XP with service pack 2 or above and Microsoft.NET framework for tools.

The relay can be connected to Reydisp via any of the communication ports on the relay. Suitable communication Interface cable and converters are required depending on which port is being used.

A.5.1Front USB connection

To connect a pc locally via the front USB port.

A.5.2Rear RS485 connection

To connect a pc locally via the rearRS485 port.

A.6Menu Structure

© UK Power Networks 2017 All rights reserved1

Lucy VRN6a with Argus 7SR11 Relay Test Form / Document Number: ECP 11-0512g
Version: 2.0
Date: 22/03/2017

Appendix B– Schematic Drawings

© UK Power Networks 2017 All rights reserved1