NAME OF THE SUBSTATION:765/400/220KV MEERUT S/S

TEST DESCRIPTIONDISTANCE RELAY 7SA522MAIN-1

PANEL:415RAMANDOLA-3 LINESHEET NO: 1-8

CUSTOMER:PGCILFINAL SETTING TESTDATE:06/08/2012

1. RELAY DETAILS:Make: SiemensRelay Type: 7SA522Panel Ref: 415RAMLFB: 7SA522-6CB90-4QB4/0SRelay Sl.No: BF-1101072724Rated current: 1AAux Supply: 220V DCP-Set: V04.70.072. MECHANICAL CHECKS AND VISUAL INSPECTION.ITEMDISCRIPTIONCHECKED

1.Inspect for physical damage / defectsYes------

2.Verify connections as per approved drawingsYes------

3.Check of relay grounding.Yes------

4.Leds operations CheckedYes------

5.Date and Time set in the relayYes------

6.Input / Output CheckedYes------

7.Disturbance Recorder Checked for all faultsYes------

SECONDARY INJECTION TEST:3. MEASUREMENT CHECK:Phase Ref.Applied Current (A)Measured Current in Relay

SecondaryPrimary (KA)

R-N1.0002.00

Y-N1.002402.00

B-N1.001202.00

Phase RefApplied Value (V)VT Ratio AppliedDisplayed Primary Value (KV)

VAB11030400KV/110V400

VBC110270400KV/110V400

VCA110150400KV/110V400

VAN63.510.0400KV/110V231

VBN63.51240400KV/110V231

VCN63.51120400KV/110V231

INPUTINJECTION VALUEEXPECTED VALUEDISPLAYED VALUE

Frequency50 HZVA=63.510VB=63.51240VC=63.51120IA=1.00.0IB=1.0240IC=1.012050 Hz50 Hz

P (GW)1385.64MW1.38 GW

Q (GVAR)0.00 MVAR0.0 GVAR

S (GVA)1385.64MVA1.38 GVA

PF1.001.00

4. ZONE REACH & TIMING TEST: Doble test report format Attached*Distance protection is blocked during VT Fuse fail condition and Line isolator open condition.5. COMMUNICATION SCHEME LOGICCR SEND SIGNAL LOGICZ1-Forward CR Send checked OKZ2-Forward- CR Send checked OKTRIP LOGICZ2 Fault + CR Receive + CR Channel Healthy-23.30msZ2 Fault + CR Receive + CR Channel Faulty-322.10msZ2 Fault + NO CR Receive + CR Channel Healthy -326.80msZ2 Fault + NO CR Receive + CR Channel Faulty-322.80ms6. FAULT LOCATORReactance = 0.1817/KMLine Length=102KMTotal line reactance = 18.5334 , 86% of Line lengthMeasured Line Length (KM)

L1-EL2-EL3-EL1-L2L2-L3L3-L1L1-L2-L3

100102.3102.2102.4102.2102.2102.3102.0

5052.552.152.852.252.952.651.2

7. SWITCH ON TO FAULT (SOTF)Address 2404 50HS High Speed SOTF-O/C P/U = 2.50 A 1232 Recognition of line closure with = Manual close BI OR Current flow 1150 Seal in Time after Manual Closure = 0.3 sec 1232 Instant. Trip after SOTF to inactive

Current Flow MethodWith Manual close BI

Phase Ref.Pickup Current (A)Meas.Time (S)Pickup Current (A)Meas.Time (S)

R-N2.51523.202.55022.60

Y-N2.52018.102.55022.00

B-N2.51531.102.55031.10

*Inject directly 2.51A and Measure the trip time.8. OVER VOLTAGE PROTECTION (PH-E)Stage-1: Setting: 70V, 2.0SecPhase RefPickup (V)Drop-Off (V)DO/PU RatioTime (S)

R-N70.0468.6297.97%2.033

Y-N70.0468.6898.05%2.034

B-N69.9768.6398.08%2.033

Stage-2: Setting: 95V, 0.1SecPhase RefPickup (V)Drop-Off (V)DO/PU RatioTime (ms)

R-N95.0493.1297.97%133.30

Y-N95.0793.1497.96%133.20

B-N94.9693.1298.06%133.50

OVER VOLTAGE PROTECTION (PH-PH)Stage-1: Setting: 121V, 2.0SecPhase RefPh-ph Setting (V)Pickup (V)Drop-Off (V)DO/PU RatioTime (S)

R-Y121.00121.070118.61097.96%2.033

Y-B121.00 121.035118.68098.05%2.034

B-R121.00 121.053118.81898.15%2.033

Stage-2: Setting: 165V, 0.1SecPhase RefPh-ph Setting (V)Pickup (V)Drop-Off (V)DO/PU RatioTime (ms)

R-Y165.00165.064161.75697.99%132.60

Y-B165.00165.029161.77098.02%134.00

B-R165.00164.990161.73898.02%133.30

9. DIRECTIONAL EARTH FAULTSetting: 0.1A, 1.00Sec, =338, =122Phase RefPick-up (A)Drop-Off (A)Time (S)Operating Region

R-N0.1040.0811.028340-0-122

Y-N0.1060.0851.030219-240-0

B-N0.1030.0831.029100-120-242

*DEF blocking is checked during VT Fuse fail condition.10. VT FUSE FAIL ALARM Address 2911 Minimum Voltage Threshold U> =30.0V 2912 Maximum Current Threshold I< =0.10A 2913 Maximum Voltage Threshold U< =5V2914 Differential Current threshold I =0.10A

1 VT Fuse fail3 VT Fuse fail

Phase RefPick-up Uo (V)Pick-up (V)Applied Current(A)

R-N29.954.991.00

Y-N30.034.991.00

B-N29.954.991.00

*For 3 VT fuse fail, Reduced the 3 voltage less than the set value immediately.

11. STUB PROTECTIONBased on Phase Current I>1.50A, 0.0SecPhase RefI>Set (A)Pick-up (A)Time (ms)

R-N1.501.49537.40

Y-N1.501.49837.40

B-N1.501.49837.40

Based on Zero Sequence current 3Io>0.20A, 0.00SecPhase Ref3Io> (A)Pick-up (A)Time (ms)

R-N0.020.19930.00

Y-N0.020.19937.10

B-N0.020.19932.70

*STUB protection is blocked while isolator is in closed condition.12. UNDER VOLTAGE PROTECTION (PH-E): ALARM ONLYStage-1: Setting: 57.00V, 2.0SecPhase RefApplied Current (A)Pickup (V)Time (S)

R-N0.2057.072.0319

Y-N0.2057.082.0320

B-N0.2057.012.0326

Stage-2: Setting: 32.00V, 0.1SecPhase RefApplied Current (A)Pickup (V)Time (ms)

R-N0.2031.99132.90

Y-N0.2032.04132.20

B-N0.2032.01132.90

UNDER VOLTAGE PROTECTION (PH-PH): ALARM ONLYStage-1: Setting: 99.00V, 2.0SecPhase RefApplied Current (A)Pickup Voltage (V)Time (S)

R-Y0.2099.0552.031

Y-B0.2099.1072.032

B-R0.2099.0382.033

Stage-2: Setting: 55.00V, 0.1SecPhase RefApplied Current (A)Pickup Voltage (V)Time (ms)

R-Y0.2055.06132.10

Y-B0.2055.06133.10

B-R0.2055.06132.70

13. POWER SWING BLOCKINGThis simulation is done by State sequencer method.RefSTATE-1STATE-2STATE-3STATE-4STATE-5STATE-6

VA63.51053.51045.51035.51025.51015.510

VB63.5124053.5124045.5124035.5124025.5124015.51240

VC63.5112053.5112045.5112035.5112025.5112015.51120

IR0.0000.25000.5001.001.5002.000

IY0.002400.2502400.502401.02401.502402.00240

IB0.001200.2501200.501201.01201.501202.00120

Time20ms20ms20ms20ms20ms20ms

14. DT SEND: DT Send for: Over Voltage ProtectionDirectional Earth fault ProtectionDT Send checked: OK15. DT RECEIVED:Activate the binary Input No: 4 (J4 - J5) by Jumpering the terminal of XPLCC: 1 & 5 in 415RA Panel.Lockout Relay Operation Checked: OK16. AUTO RECLOSER: (Through BCU)Auto Recloser Operating ConditionsFault Type% of Fault AppliedMain CB StatusTie-CB StatusLine Length Measured (KM)

Z1-R Phase50

Reclosed

Reclosed52.40

Z1-Y Phase52.10

Z1-B Phase52.20

CR+Z1B R Ph100ReclosedReclosed105.0

CR+Z1B Y Ph105.7

CR+Z1B B Ph104.9

Auto Recloser Lockout ConditionsFault Type% of Fault AppliedMain CB StatusTie-CB StatusLine Length Measured (KM)

Z2-1Phase100Not Reclosed

Not Reclosed102.0

Z1-Ph-Ph5053.00

Z1-3Phase48.90

CR+Z1B (Ph-Ph)100Not ReclosedNot Reclosed105.60

CR+Z1B 3Phase102.00

Reclaim Time Fault52.40

AR PRIORITY CLOSINGMain CB ARTie CB ARRemarks

ONONMain CB & TIE CB Reclosed

OFFONPriority Close of TIE CB

ONOFFMain CB Reclosed & TIE CB Locked out

OFFOFFMain & Tie Locked Out

REMARKS:Relay found healthy and fit for serviceTESTED BY M/s SIEMENSWITNESSED BY PGCILDATE

06.08.2012