PSS-1

Tested by ( for spaceage) Witnessed by (ADDC)

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SAT REPORT PSS

11kV/415V substation

CLIENT : ADDC CONSULTANT

CONTRACTOR : PROJECT NO : SHEET NO : 1 of 11 PSS : 01 DATE : PROJECT NAME :

NAME PLATE

Sl .No Make & Type

Rated Voltage Normal current

(A) General Check:

Sl.no Description Remarks

1 Earthing Circuit of Cubic 2 Label of Panels 3 Marking of equipment and terminals 4 Tightening of connection 5 Visual inspection of the panel and components 6 Voltage presence indication 7 Lamp Test 8 Scheme & Loop wiring verification check 9 MCBs rating as per drawing and working properly 10 SF6 Pressure Gauge

(B) Operation Check:


1 Mechanical opening and closing of C.B 2 Mechanical opening and closing of Ring Switch 3 C.B protection Trip indication 4 Mechanical opening and closing of Earth Switch 5 Pull to Trip Bar


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(C) Interlock Check


1 Mechanical Interlock between CB & Ring Switch 2 Mechanical interlock between Earth Switch & Ring Switch

1) INSULATION RESISTANCE TEST BEFORE HI-POT

Test Connection Applied Test Voltage dc /1Min Measured Resistance () Remarks R: Y+B+E

Y: R+B+E B: R+Y+E

2) DIELECTRIC TEST (for 1 minute)

Test Connection Applied Test Voltage ac /1Min Leakage Current (mA) Remarks R: Y+B+E Y: R+B+E B: R+Y+E

3) INSULATION RESISTANCE TEST AFTER HI-POT

Test Connection Applied Test Voltage dc /1Min Measured Resistance () Remarks R: Y+B+E

5kV

Y: R+B+E B: R+Y+E

Test Equipment used:

INSTRUMENT NAME MEGGER HIGH VOLTAGE TESTER SL. NO. MAKE & MODEL CALIB. DUE


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4) PROTECTION RELAY TEST

Relay Make/ Type SCHNEIDER ELECTRIC / MICOM P124

Transformer Rate 1500 kVA

CT Ratio 100 / 1A Relay Sl. No.

I> t> Io > to > I>> t>> Io >> to >>

(a)OVERCURRENT (I>) Set

Value (A)

APPLIED CURRENT (A)

PICK UP CURRENT (A) CALCULATED TIME (sec)

MEASURED TIME (sec)

R-Y Y-B B-R R-Y Y-B B-R

2 x Is

5 x Is

(b) OVERCURRENT (I>>) Set

Value (A)

APPLIED CURRENT (A)

PICK UP CURRENT (A) CALCULATED TIME (sec)

Y-B

MEASURED TIME (sec)

R-Y Y-B B-R R-Y Y-B B-R

2 x Is

(c) EARTH FAULT (Ie>) Set

Value (A)

APPLIED CURRENT (A)

PICK UP CURRENT (A) CALCULATED TIME (sec) MEASURED TIME (sec)

2 x Is

5 x Is

(d) EARTH FAULT (Ie>>) Set

Value (A)

APPLIED CURRENT (A)

PICK UP CURRENT (A) CALCULATED TIME (sec) MEASURED TIME (sec)

2 x Is


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Fault Record: Record No : Threshold : Fault : Magnitude :

Remarks: Trip Test: Connected through (1) Primary Injection (2) Secondary Injection

1. Phase fault: 2. Earth Fault :

Relay Final Setting: In : 1A kVA : 1500 CT Ratio : 100/1 A

O/C Curve: IEC SI

E/F Curve: IEC SI

5) CT RATIO TEST

PROTECTION CT

Injected Current (A) Measured Current (A)

CT RATIO FOR

100 / 1 A

RY / RN YB / YN BR / BN R Y B N -- -- -- --

-- -- -- -- -- -- -- --

E / F -- -- -- --

-- -- -- -- -- -- -- --

POLARITY CHECKS:

Observations of Polarity Checks for Protection CT Remarks R - Phase Y - Phase B - Phase



I> t> I>> t>>

Ie> t> Ie>> t>>


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6) Metering core- Y-Phase

Make/Type : Sl .No CT Ratio VA/Cl

Ratio Test Core No. Ref CT Ratio (A) Primary injected current (A) Secondary measured current (A)

S1-S2

7) Earth Fault Indicator:

Make/Type : TRIP LEVEL: 25, 50, 100 A Set trip level : Serial No. : Pick up Value : Supply : Reset time : 4 hrs LED Indicaton :


INSTRUMENT NAME SEC IN KIT MULTIMETER SL. NO. MAKE & MODEL CALIB. DUE

8) Earth Resistance ():

TRM Body Transformer body Transformer neutral


INSTRUMENT NAME DIGITAL GROUND TESTER SL. NO. DGT/SP/01 MAKE & MODEL Megger & DET4TC2 CALIB. DUE


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9) Transformer Test Report

Name Plate Details SIEMENS TRANSFORMERS LLC

Sl.No 10003214 Year of Manufacture 2014

Rating KVA 1500 Type of Cooling ONAN Frequency (Hz) 50

Rated Voltage (kV) 11 / 0.415 Impedance Normal Tap (%) 5.75

Temperature Rise Oil/Winding 0C 45 / 55 Vector Group Symbol Dyn11

Rated Current (A) 78.7 / 2086.8 Oil Weight (Lit) 861

Total Weight (Kg) 4350

(a) Visual Check:

Sl.No Description Remarks 01 Installing according to drawing 02 No Oil leakage & Oil Level position correct 03 All drain valves are fully closed 04 No visible cracks or breaks to bushing 05 All bushing connections are fully tightened 06 Main tank grounding correct 07 Neutral grounding is correct (fixed, tightened & insulated) 08 Pressure relief valve are correctly installed 09 Earthing of cable boxes and other removable parts 10 Winding temperature are correctly installed


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(b) Insulation Resistance Test

Winding Voltage in dc Insulation Resistance (G) Ref (V) 15sec 60sec Polarisation Index (PI) Value =

(60Sec/ 15Sec) HV to Earth 5000 HV to LV 2500

LV to Earth 1000

(c) Winding Resistance

H.V Side

Taps Resistance () 1U-1V 1V-1W 1W-1U

1 2 3 4 5

L.V Side ()

Taps Resistance () 2u-2v 2v-2w 2w-2u 2u-2n 2v-2n 2w-2n 3

(d) Magnetising Current Test

As per the test result attached


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(e) Magnetising Core Balance test

Applied Voltage Measured Voltage Remarks

r-n

y-n

b-n r-n y-n b-n

- - -

- - -

- - -

(f) Turns Ratio Test


(g) Vector Group Test


(h) Functional Checks of Supervisory Equipments:

Sl.No Checks Remarks 01 Vertical Oil Level Switch 02 Oil Temperature Indicator 03 Pressure relief valve 04 OTI Alarm Setting Temperature ( 0 C) 05 OTI Trip Setting Temperature ( 0 C) 06 OTI alarm/trip contacts

SNAG LIST


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SAT REPORT PSS




MDB TESTING

Name Plate Details:

Manufacturer Serial No. Year of Mfg Normal current rating of Bus Bar Normal current rating of I/C unit Rated Voltage

(A) General Check:


1 Earthing Circuit of Cubic 2 Label of Panels 3 Marking of equipment and terminals 4 Tightening of connection 5 Visual inspection of the panel and components 6 Check function of CBs draw out rack 7 Check selector switches 8 Check manual operation of CBs 9 MCBs rating as per drawing and working properly 10 Check Fuses


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SAT REPORT PSS




(B) Operation Check:


1 Verify CBs open/close manual 2 Simulate external control signal and verify CBs open/close automatically 3 Verify operation of all selector switches and push buttons 4 Verify operation of all instrumentation, ammeters, voltmeters, lamps etc. 5 Verify operation of safety shutdowns, UVR, ELR 7 Verify test, rack in and rack out position 8 Verify spring charge status and indication 9 Verify auto and manual status

10 Verify CBs open, on and trip status 11 Verify remote start and stop commands

INSULATION RESISTANCE TEST

PHASE APPLIED VOLTAGE (V) IR VALUE IN REMARKS

R EARTH

Y EARTH B EARTH

R-N Y-N B-N R-Y Y-B B-R


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For MDB, verify all outgoing MCCB I/O points

Status

Ref Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9

On status

Off status

Trip

Selector switch local mode status

Selector switch remote mode status

PSS-1

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