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    Trafo I p643

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    Electrical Engineer
    The document provides a relay test report for a 33/132KV transformer. It details tests performed on the TRAFO DIFF relay including general checks, current and voltage measurements, pickup and timing tests, stability checks, slope testing, volt/hertz protection, and harmonics blocking.

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    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd

    Trafo I p643

    Uploaded by

    Electrical Engineer
    21 views5 pages
    The document provides a relay test report for a 33/132KV transformer. It details tests performed on the TRAFO DIFF relay including general checks, current and voltage measurements, pickup and timing tests, stability checks, slope testing, volt/hertz protection, and harmonics blocking.

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    Trafo 1

    Original Title

    Trafo i p643

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    The document provides a relay test report for a 33/132KV transformer. It details tests performed on the TRAFO DIFF relay including general checks, current and voltage measurements, pickup and timing tests, stability checks, slope testing, volt/hertz protection, and harmonics blocking.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    21 views5 pages

    Trafo I p643

    Uploaded by

    Electrical Engineer
    The document provides a relay test report for a 33/132KV transformer. It details tests performed on the TRAFO DIFF relay including general checks, current and voltage measurements, pickup and timing tests, stability checks, slope testing, volt/hertz protection, and harmonics blocking.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    You are on page 1of 5

    VI-SOP-O&M-02

    VI-IMSP-O&M-01-F02

    RELAY TEST REPORT


    JBS Enterprises Pvt. Ltd. Test Report for 33/132KV Terralight Solar Energy Sitamau SS Pvt Ltd.
    (TSESSSPL)
    First floor,Bella Vista,Oswal Park,Pokharan
    Road no.2,Thane west ,Thane,Maharashtra RELAY TEST REPORT
    Fax: +91 22 2543 7835 web:www.jbsepl.com
    email: jbs@vsnl.com Date: 28/03/2023
    CLIENT: Virescent Renewal Energy

    TEST REPORT FORTRAFFO.DIFFPROTECTION RELAY (P643)

    1. Test Equipment’s:
    NO. Device Name Device Type
    1 Test kit make PONOVO
    2 Type PW460
    3 Version 2.5
    4 Serial No IN127101202

    2. GENERAL DATA AND RELAY INFORMATION:

    Sub. Name 33/132KV SITAMAUGSS Rated CT Current 150A/450A


    Panel Name 132KV TRANSFORMER -1 Current Range 1A
    Relay Make SCHNEIDER ELECTRIC Normal Volts 63.5V
    Relay Type P643 Aux Volts 110V DC
    Relay Serial No. 39509791 Frequency 50HZ
    Relay Designation TRAFO DIFF. RELAY Date 28/03/2023

    3. General Check:

    Item Description Result

    1 Physical inspection of the Relay  Yes  N/A OK

    2 Inspect for physical damage / defects.  Yes  N/A OK

    TESTED BY: WITNESSED BY: Client Rep.:


    Mr. NAVEEN KUMAR JBS ENTERPRISES PVT. LTD. TERRALIGHT SOLAR ENERGY SITAMAU SS PVT. LTD.
    (TSESSSPL)
    Prepared BY:
    Mr. PRATEEK
    VI-SOP-O&M-02
    VI-IMSP-O&M-01-F02

    4. Measurement Test:

    PARAMETERS WINDING-1 WINDING-2

    Winding configuration HV side LV side


    Power 25 MVA
    PT Ratio(kV) 132 33
    Rated current(Amp) 109.34 437.38
    Full load current Ifl(mA) 0.729 0.972
    Differential CT Ratio 150/1A 450/1A

    5. Current Measurement Test:

    INJECTED
    MEASURED VALUES (In terms of Primary
    CURRENT(Amp)
    Values)
    R Y B

    HV SIDE CT 1A 1A 1A RN: 151.50A YN: 150.38 A BN: 150.85 A

    LV SIDE CT 1A 1A 1A RN: 450.81A YN: 449.34A BN: 448.24A


    PT 110V 132KV

    6.DIFFERENTIAL PICK UP TEST & TIMING TEST:

    Differential Pick Up Timing in ms


    Phase
    HV side Pick Up LV side Pick Up HV side LV side

    L1 0.218 0.292 36 39

    L2 0.218 0.292 36 39

    L3 0.218 0.292 36 38
    L1,L2,L3 0.147 0.197 40 51

    TESTED BY: WITNESSED BY: Client Rep.:


    Mr. NAVEEN KUMAR JBS ENTERPRISES PVT. LTD. TERRALIGHT SOLAR ENERGY SITAMAU SS PVT. LTD.
    (TSESSSPL)
    Prepared BY:
    Mr. PRATEEK
    VI-SOP-O&M-02
    VI-IMSP-O&M-01-F02

    7.STABILITY CHECKS: WITH HV AND LV WINDING :

    Injected current ( A )
    S.NO STATUS Time (Sec)
    HV SIDE LV SIDE
    0.145∟0° 0.194 ∟180°
    1. 0.145∟-120° 0.194∟60° Stable No –Trip
    0.145∟+120° 0.194∟300°
    0.145∟0° 0.194∟0° T
    2. 0.145∟-120° 0.194∟60° Unstable rip
    0.145∟+120° 0.194∟300°

    8.SLOPE TEST:Is1=0.200
    K1=30.0%
    Is2=1.500
    K2=80.0%

    INJECTED CURRENT IN MEASURED VALUES


    S.NO SECONDARY IN P U STATUS REMARKS
    HV SIDE LV SIDE Id Ir
    400mA 750mA 0.258 0.844
    1. 400mA 750mA 0.258 0.844
    400mA 750mA 0.25 0.844 UNSTABLE
    1A 805mA 0.354 1.175 IN SLOPE1 TRIP
    2. 1A 805mA 0.350 1.175
    1A 805mA 0.350 1.175
    800mA 1.580A 0.679 2.082
    3. 800mA 1.580A 0.679 2.082
    800mA 1.580A 0.679 2.082 UNSTABLE
    5A 2.710A 1.682 3.334 IN SLOPE 2 TRIP
    5A 2.710A 1.682 3.334
    4. 5A 2.710A 1.682 3.334
    Slop 1:- (ID2-ID1)/IR2-IR1) x100
    = (0.354-0.258)/1.175-0.844)x100
    = 0.294x100
    = 29.4%
    Slop 2:- (ID2-ID1)/IR2-IR1) x100
    = (1.682-0.679)/(3.334-2.082)x100
    = 0.80x100
    = 80%

    TESTED BY: WITNESSED BY: Client Rep.:


    Mr. NAVEEN KUMAR JBS ENTERPRISES PVT. LTD. TERRALIGHT SOLAR ENERGY SITAMAU SS PVT. LTD.
    (TSESSSPL)
    Prepared BY:
    Mr. PRATEEK
    VI-SOP-O&M-02
    VI-IMSP-O&M-01-F02

    9. VOLT/HERTZ PROTECTION:

    Ref Operated Voltage Set V /Hz Operating Set time Optd. Time
    V/Hz (Sec)
    R-Phase 146.05 at 50Hz 2.310 2.310 10.00 10.08
    Y-Phase 146.05 at 50Hz 2.310 2.310 10.00 10.07
    B-Phase 146.05 at 50Hz 2.310 2.310 10.00 10.09

    Ref Operated Voltage Set V /Hz Operating V/Hz Set time Optd. Time (Sec)

    R-Phase 152.4 at 50Hz 2.410 2.410 10.00 10.08


    Y-Phase 152.4 at 50Hz 2.410 2.410 10.00 10.04
    B-Phase 152.4 at 50Hz 2.410 2.410 10.00 10.09

    Ref Operated Set V /Hz Operating Set time Optd.Time


    Voltage V/Hz (Sec)
    R-Phase 165.1 at 50Hz 2.640 2.640 3.00 3.08
    Y-Phase 165.1 at 50Hz 2.640 2.640 3.00 3.03
    B-Phase 165.1 at 50Hz 2.640 2.640 3.00 3.04

    10. HARMONICS BLOCK :

    INJECTED INJECTED
    S.NO STAGES CURRENT CURRENT AT N STATUS
    AT 50Hz TIMES OF 50 Hz
    1. 2nd HARMONICS HV Side 1A AT 50HZ 0.211 AT 100HZ BLOCKING
    2 5th HARMONICS HV Side 1A AT 50HZ 0.191 AT 100HZ TRIP
    3. 2nd HARMONICS LV Side 1A AT 50HZ 0.350 AT 100HZ BLOCKING
    4. 5th HARMONICS LV Side 1A AT 50HZ 0.340 AT 100HZ TRIP

    11. REF PROTECTION RELAY:-

    TESTED BY: WITNESSED BY: Client Rep.:


    Mr. NAVEEN KUMAR JBS ENTERPRISES PVT. LTD. TERRALIGHT SOLAR ENERGY SITAMAU SS PVT. LTD.
    (TSESSSPL)
    Prepared BY:
    Mr. PRATEEK
    VI-SOP-O&M-02
    VI-IMSP-O&M-01-F02

    Ref Set Current Time Delay Operating Time(sec)


    HV-N CT 0.150 0.0 0.061

    LV-N CT 0.150 0.0 0.062

    12. FUNCTION CHECKS:

    MEASUREMENT CHECKS TESTED & FOUND OK

    PROTECTION FUNCTION CHECKS TESTED & FOUND OK

    CONTACT OUTPUT RELAY CHECKS TESTED & FOUND OK

    LED CHECK TESTED & FOUND OK

    13. TEST RESULT :

    RESULT PASS - RELAY FOUND HEALTHY ON ALL ASPECTS.

    REMARKS NO

    TESTED BY: WITNESSED BY: Client Rep.:


    Mr. NAVEEN KUMAR JBS ENTERPRISES PVT. LTD. TERRALIGHT SOLAR ENERGY SITAMAU SS PVT. LTD.
    (TSESSSPL)
    Prepared BY:
    Mr. PRATEEK

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