Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
ANNEXURE 2 – TEST FORMS FOR TEST RESULTS
Front Plate Information
Current differential protection relay MiCOM P543 – B_1 – F873
Model number P54321AB7M0520K
Serial number
Rated current In 1A
Frequency 50 Hz
Auxiliary Voltage Vx 110V DC
Software Reference P543_ _ _ _7_ _ 520_6
General inspection Item Description SAT Remarks
1Visual inspection of the relay (no physical
damages or defects noted)
2 Connections as per approved drawings verified
3Serial number of relay matches serial number on
printed label on case
4 Rating information correct for installation
5 Case earth installed
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Doc.No. PH8-4B-10-36-P105 Rev A ANNEX-2 Page 1 of 13
Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
1a. Local End Relay
CT rated primary current set as : 2500 A
CT rated secondary current set as : 1 A
Ignd-CT rated primary current set as : 2500 A
Ignd-CT rated secondary current set as : 1A
CT Polarity : Standard
CT Correction Factor set as : 1.0
1b. Remote End Relay
CT rated primary current set as : 400 A
CT rated secondary current set as : 1 A
Rated primary voltage set as : 66 kV
CT Polarity : Standard
CT Correction Factor set as : 1.0
1c. In Zone Transformer
In Zone Transformer Nominal Voltage (HV) : 66 kV
In Zone Transformer Nominal Voltage (LV) : 11 kV
In Zone Transformer Vector Group : Yd1
In Zone Transformer rated Apparent Power : 40MVA
In Zone Transformer HV side Load Current : I prim=350A, Isec=0.875A
In Zone Transformer LV side Load Current : I prim=2101A, Isec=0.84A
For testing purpose B__1 feeder kept as local end relay and B__1 as remote end relay.
Relay Address:
Local End Relay : 1-B
Remote End Relay : 1-A
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Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
2. MEASURED VALUE TEST:
2a. Inject current in the relay as per the table below and observe the reading on the relay display, in secondary values and in primary values.
Phase injectedCurrent injected(Amps)
Primary current read on relay display in Amp
IR IY IB I0
R-E 1
Y-E 1
B-E 1
R-Y 1
Y-B 1
B-R 1
R-Y-B 1
EXPECTED VALUES
Phase injectedCurrent injected(Amps)
Primary current read on relay display in Amp
IR IY IB I0
R-E 1 2475-2525 0 0 820 - 855
Y-E 1 0 2475-2525 0 820 - 855
B-E 1 0 0 2475-2525 820 - 855
R-Y 1 2475-2525 2475-2525 0 0
Y-B 1 0 2475-2525 2475-2525 0
B-R 1 2475-2525 0 2475-2525 0
R-Y-B 1 2475-2525 2475-2525 2475-2525 0
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Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
3a. PICKUP TEST
Settings: IS1 = 300mAk1 = 40% =0.4CT Corr. Factor Loc. = 1.19
Fault Type
Calculated Pickup(mA)
Expected Pickup(mA) Actual
Pickup(mA)
Expected Trip Time(ms)
Actual Trip Time
in m-sec at 2 x I Pickup
Min Max
R-E 315.0 283 347 ≤60.0
Y-E 315.0 283 347 ≤60.0
B-E 315.0 283 347 ≤60.0
R-Y 315.0 283 347 ≤60.0
Y-B 315.0 283 347 ≤60.0
B-R 315.0 283 347 ≤60.0
R-Y-B 315.0 283 347 ≤60.0
* = correction factor is applicable when transformer is in protection zone.Note: Additional delay (5-15ms) for closing of BO in relay and pickup of BI in OMICRON should be added to the total value.
Expected Value of operate current is Idiff >[ IS1 + [Ibias x k1)] pu] /CT Corr. Factor Loc. +/- 10%
Single end fed fault with no load, but with fault current IIdiff = IIbias = ½ IIdiff > IS1 / (1 - 0.5 k1)* CT Corr. Factor Loc.
Ph-E expected PU = 315 mAPh-Ph expected PU = 315 mA3Ph expected PU = 315 mA
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Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
3b. BIAS CHARACTERISTIC TEST:3.b.1: LOWER SLOPE
Settings: Is1 =0.3A = 300mA k1 =40% = 0.4
Is2 =2600mA = 2.60ACT Corr. Factor Loc. = 1.19
Injected current for forming bias current
Differential Current [A]Secondary values
Expected Value(mA)
Slope [%]
K1 claclulated
K1 expectedPhase
Magnitude[A]1.0
Bias current [measured]
PhaseMagnitude
[mA]Min
Max
R 1.0 Y 406 496 36-44
Y 1.0 R 406 496 36-44
B 1.0 B 406 496 36-44
* =CT correction factor is applicable when transformer is in protection zone.Ibias = 0.5AK1(phaseB)=(Idiff(phase B)- IS1/CT corr. Fact)/Ibias +/- 10%
3.b.1: UPPER SLOPESettings: Is1=0.3A = 300mA
k1=40% = 0.4k2=80% = 0.8Is2=2.60A = 2.60ACT Corr. Factor Loc. = 1.19
Injected current for forming bias current
Differential Current [A]Expected Value
(mA)Slope [%]
K1 claclulated
K1 expectedPhase
Magnitude[A]1.0
Bias current [measured]
Phase Magnitude Min Max
R 6.0 Y 1.671 1.871 72-88
Y 6.0 R 1.671 1.871 72-88
B 6.0 B 1.671 1.871 72-88
* =CT correction factor is applicable when transformer is in protection zone.Ibias = 0.5AK1(phaseB)=(Idiff(phase B)- (IS1 -0.4*Is2) /CT corr. Fact /(Ibias - Is2 /CT corr. Fact) +/- 10%
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Doc.No. PH8-4B-10-36-P105 Rev A ANNEX-2 Page 5 of 13
Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
3d. Harmonic RestraintSettings: Inrush Restraint = Enable
I>2nd Harmonic = 10%Transformer compensation to be enabled at Both relays.Inject 1A current, first with harmonic content less than setting, then with harmonic content greater than setting; verify Differential Protection operation / blocking2nd Harmonic Restraint:Phase in which current injected
Current injected(Amps)
2nd Harmonic Content
(%)
TRIP / BLOCK
TRIP / BLOCK
(Expected)
2nd Harmonic Content
(%)
TRIP / BLOCK
TRIP / BLOCK
(Expected)
R-E 1.0 0.24 TRIP 0.26 BLOCK
Y-E 1.0 0.24 TRIP 0.26 BLOCK
B-E 1.0 0.24 TRIP 0.26 BLOCK
R-Y-B 1.0 0.24 TRIP 0.26 BLOCK
Expected value = ((1-IS1*Corr Fact/0.4)-1)/5.657Cross blocking 2nd Hramonic : 3e. Stability Test:3e.1: External through fault: current of 0.875A on remote end (HV) and 0.84A on local end (LV) with 150 0
phase shift between the two currents. The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
R-Y-BI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
R-Y-BI diff % ≤105 ≤105 ≤105 ≤17 ≤17 ≤17
I rest % 2005-2210 2005-2210 2005-2210 315-375 315-375 315-375
3e.2: Internal fault: current of 0.875A on remote end (HV) and 0.84A on local end (LV) with -30 0 phase shift between the two currents. The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
R-Y-BI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
R-Y-BI diff % 4000-4400 4000-4400 4000-4400 630-770 630-770 630-770
I rest % 2005-2210 2005-2210 2005-2210 315-375 315-375 315-375
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Doc.No. PH8-4B-10-36-P105 Rev A ANNEX-2 Page 6 of 13
Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
3e.3: External through fault: current of 0.875A on remote end (HV) in phase R and 0.485A in phases R and Y on local end (LV) with 1800 phase shift between R(HV) and R(LV). The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
R-EI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
R-EI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20
I rest % 1150-1350 1150-1350 ≤105 180-220 180-220 ≤20
3e.4: External through fault: current of 0.875A on remote end (HV) in phase Y and 0.485A in phases Y and B on local end (LV) with 1800 phase shift between Y(HV) and Y(LV). The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
Y-EI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
Y-EI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20
I rest % ≤105 1150-1350 1150-1350 ≤20 180-220 180-220
3e.5: External through fault: current of 0.875A on remote end (HV) in phase B and 0.485A in phases B and R on local end (LV) with 1800 phase shift between B(HV) and B(LV). The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
B-EI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
B-EI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20
I rest % 1150-1350 ≤105 1150-1350 180-220 180-220 180-220
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Doc.No. PH8-4B-10-36-P105 Rev A ANNEX-2 Page 7 of 13
Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
3e.6: External through fault: current of 0.875A on remote end (HV) in phases R and Y, while injecting 0.485A in phases R and B on local end (LV) and 0.970 in phase Y with 180 0 phase shift between R(HV) and R(LV). The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
R-YI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
R-YI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20
I rest % 1150-1350 2305-2545 1150-1350 180-220 360-440 180-220
3e.7: External through fault: current of 0.875A on remote end (HV) in phases Y and B, while injecting 0.485A in phases R and Y on local end (LV) and 0.970 in phase B with 1800 phase shift between Y(HV) and Y(LV). The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
Y-BI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
Y-BI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20
I rest % 1150-1350 1150-1350 2305-2545 180-220 180-220 360-440
3e.8: External through fault: current of 0.875A on remote end (HV) in phases B and R, while injecting 0.485A in phases Y and B on local end (LV) and 0.970 in phase R with 1800 phase shift between B(HV) and B(LV). The differential and restraining currents are observed in both the relays.Fault Type
Local End Relay Remote End RelayR Y B R Y B
B-RI diff %
I rest %
Expected valuesFault Type
Local End Relay Remote End RelayR Y B R Y B
B-RI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20
I rest % 2305-2545 1150-1350 1150-1350 360-440 180-220 180-220
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Doc.No. PH8-4B-10-36-P105 Rev A ANNEX-2 Page 8 of 13
Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
4.Backup OVERCURRENT PROTECTION :
4a.Definite Time:Settings: I>2 Status : Enable
I>2 Function : DT
I>2 Directional : Non-Directional
I>2 Current Set (A) : 2
I>2 TMS (s) : 0.5
Phase *Expected Value of I2>ActualPickup
current(A)
I2> Actual Pickup current
(A)
*Expected Value of I2>Actual Drop Out current
(A)
I2> Actual
Drop Out current
(A)
*Expected Value of I2>Actual Trip
Time @ 2 x setting(msec)
I2> Actual Trip Time @ 2
x setting (msec)
Min Max Min Max
R 1.9 2.1 1.805 1.900 480 - 560
Y 1.9 2.1 1.805 1.900 480 - 560
B 1.9 2.1 1.805 1.900 480 - 560
*Accuracy:
Pick-up = Setting ±5%
Drop-off = 0.95 x Setting ±5%
DT operation = ±2% or 40ms whichever is greater
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Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
4b.Inverse Time: 51-B/51N-B
Settings: I>1 Status : EnableI>1 Function : IEC S Inverse I>1 Directional : Non-DirectionalI>1Current Set (A) : 0.96I>1 TMS (s) : 1.00
4b.1 PickUp and DropOut characteristic test
Phase
*Expected Value ofActualPickup
current(A)
I1> Actual Pickup current
(A)
*Expected Value of Actual Drop Out
current(A)
I1> ActualDrop Out current
(A)
Min Max Min Max
R 0.912 1.008 0.867 0.958
Y 0.912 1.008 0.867 0.958
B 0.912 1.008 0.867 0.958
4b.2 IDMT time characteristic test
Phase Operating Time (s) @ 2 x Setting(1.92A)
Operating Time (s) @ 3 x Setting(2.88A)
Operating Time(s) @ 4 x Setting (3.84A)
Calculated *Expected Value
Measured Calculated *Expected Value
Measured Calculated *Expected Value
Measured
Min Max Min Max Min Max
R 10.3 9.7 10.9 6.3 5.9 6.7 4.98 4.7 5.3
Y 10.3 9.7 10.9 6.3 5.9 6.7 4.98 4.7 5.3
B 10.3 9.7 10.9 6.3 5.9 6.7 4.98 4.7 5.3
*Accuracy:
Minimum trip level of IDMT elements = 1.05 x Setting ±5%IDMT characteristic shape = ±5% or 40ms whichever is greater (under reference conditions)**
** Reference conditions: TMS=1, TD=1 and I> setting of 1A, accuracy operating range 2-20Is
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Doc.No. PH8-4B-10-36-P105 Rev A ANNEX-2 Page 10 of 13
Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
5.Thermal Overload Protection:
Settings: Characteristic : Single
Thermal Time Constant 1 : 135 min.
Thermal Overload Alarm : 90 %
Thermal Trip : 0.84
Current Injectedin Amp
*Expected Alarm Time in sec Actual Alarm Time
in sec
*Expected Trip Timein sec Actual Trip Time
in secMin Max Min Max
3.00 594 726 659 805
*Accuracy:
Pick-up Thermal alarm Calculated alarm time = ±10%**Thermal overload Calculated trip time = ±10%**
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Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
6. Binary Input: AssignmentsBI 1 : Inter Trip Send Tested:BI 2 : Inter Trip Send from LV side Tested:BI 3 : CB A_80 Open Tested:BI 4 : CB A_80 Closed Tested:BI 5 : CB A_80 Test Tested:BI 6 : Test SW Tested:BI 7 : HMI Blocking Tested:BI 8 : Spare Tested:BI 9 : ESW A_81 Open Tested:BI 10 : ESW A_81 Closed Tested:BI 11 : Spare Tested:BI 12 : Spare Tested:BI 13 : Spare Tested:BI 14 : Spare Tested:BI 15 : Spare Tested:BI 16 : BI DC Fail Tested:
7. Binary Output: AssignmentsBO 1 : Trip to LVAC CB Tested:BO 2 : Trip to LVAC CB Tested:BO 3 : Trip to 86 LV Side Tested:BO 4 : HV CB Closed (BCU indic.) Tested:BO 5 : HV CB Closed (interlock) Tested:BO 6 : Spare Tested:BO 7 : Spare Tested:BO 8 : Trip to 86 LV Side Tested:BO 9 : Remote HV CB Open Trip to LV Side Tested:BO 10 : Spare Tested:BO 11 : Spare Tested:BO 12 : Spare Tested:BO 13 : Spare Tested:BO 14 : Spare Tested:
Live contact Tested:8. LED Indications: Assignments
8.a Indication LEDsLED 1 : Diff. Trip Tested:LED 2 : InterTrip Send Tested:LED 3 : InterTrip Received Tested:LED 4 : Diff Blocked Tested:LED 5 : Thermal Alarm Tested:LED 6 : Comm Fail Tested:LED 7 : Tested:LED 8 : Tested:
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Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006
Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1
8.b Function LEDsFunction
LEDsAssignment Tested
Function
LEDsAssignment Tested
LED 01 A_80 CB Open LED 06 A_80 CB Closed
LED 02 A_80 CB in Test LED 07 A_80 CB not in Test
LED 03 A_81 ESW in Open LED 08 A_81 ESW in Closed
LED 04 HV CB Open LED 09 HV CB Closed
LED 05 HV ESW Open LED 10 HV ESW Closed
9. Tripping of CB/Lockout Relay on 87-1 Differential Trip :________
10. Tripping of CB/Lockout Relay on BackUp O/C Trip :________
11. Diff. Prot. is blocked when the Comm. Channel (FO Link) Fails in local end :________
12. Differential function blocked when local end test switch in test position :________
13. Differential function blocked when remote end test switch in test position :________
14. Intertrip send on activation of binary input :________
15. Disturbance recorder functionality :________
16. Event log functionality :________
17. “Time sync” checked with SCS :________
Relay found healthy : Yes / No
18. Instruments used:
Sl No Description MakeEquipment
Sl No.Calibration
dateCalibration due date
1. Secondary Injection Kit OMICRON HD378Q
02.05.2010.
02.05.2011.
2. MultimeterFLUKE 179 891402131
27.05.2010.
27.05.2011.
3. Laptop DELL 520 - - -
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