Lvac-sat Procedure for Equipment Test-ss1

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LARSEN & TOUBRO LIMITED- ECCD

ELECTRICAL AND TELECOM UTILITIES FOR SUPPORT SERVICE AREA PHASE I & II AND WEST END EXTENSION, RAS LAFFAN

Doc No:

2908-BG35-4033 Contract No: GC 081117B0 Page 1 of 10

Rev. 0

Date 13-02-11

Title of Document RASLAFFAN CITY _{33/11KV SS1 SUBSTATION} SAT FOR LVAC ELECTRICAL EQUIPMENT TEST

Name of project

Contract No GC 081117B0

Name of client Qatar Petroleum (QP)

Name of main contractor LARSEN & TOUBRO LTD ECC DIVISION Discipline Electrical

Document No. 2908-BG35-4033

Rev.

No. Date Prepared by Reviewed by Reviewed by Approved by PM Approved by Customer Rep.

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CONTENTS

SL.NO DESCRIPTION

1 Title & Approval sheet 2 Contents

3 Purpose

4 Introduction

5 Abbreviation used

6 Guidelines to organize the SAT for LVAC

7 Documentation required

8 List of LVAC Electrical Equipment test and Procedure

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3.

PURPOSE: This test document specifies the scope, the item to be tested and the test procedures for the verification of LVAC switchboard. This test document provides systematic procedures in line with Contract requirements and specifications to conduct the SAT Successfully

WHO SHOULD USE THIS DOCUMENT This document is for Site Acceptance Test and Testing engineer, Quality Assurance personnel, L&T / QP representatives to test and evaluate the system.

4.

Introduction

The purpose of this document is to define the Site Acceptance Test procedure of 33/11kv SS1 LVAC switchboard equipment for L&T contract with QP project “GC 081117B0” Epic For Electrical And Telecom Utilities For Support Services Area Phase I & II And West End Extension Of Raslaffan City.

The tests are performed by approved Testing engineers and witnessed by L&T / QP nominated representatives. Each test, which will be signed off upon completion by Testing engineers and L&T / QP representatives.

This complete SAT document is in two parts. This part specify the Site Acceptance Procedure and the next part specify the SAT Test Sheets of the equipment and functionalities

Comments are noted in separate Incident and Correction Reports (snag list) attached to the SAT Procedure. The Site Acceptance Certificate will be signed off upon satisfactory completion of the test by both Testing engineers and L&T / QP representatives.

5.

Abbreviation Used

� SAT -Site Acceptance Test � GA -General Arrangement � SLD -Single Line Diagram � QP -Qatar Petroleum � L&T -Larsen & Toubro

�LVAC-Low Voltage Alternating Current

6.

GUIDELINES TO ORGANIZE SAT FOR LVAC ELECTRICAL EQUIPMENT. Testing coordinator Responsibility:

Obtain Consolidated Permit to Work (CPW).

The Test panel is ready for pre-commissioning tests. Availability of Qualified approved testing engineer.

Availability of tools and Test Kits and equipments with valid calibration certificate. Stable Power Supply for testing.

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Date 13-02-11 QA/QC Engineer:

Ensure all AFC drawings are available and work procedures are as per QP standards. Preparing request for inspections and getting clearances.

Complying, Inspecting as per the checklist and maintaining all quality records, standards. Check all Testing instruments used are calibrated.

7.

DOCUMENTATION REQUIREMENT:

Approved Drawing, Two sets of Drawings one for the witness engineer and one for the Testing engineer. Catalogues, O&M Manuals, all relevant specifications and protection requirements.

Approved site test procedures and format. Weekly Pre Commissioning & Testing Schedule. Clearance from QA/QC to proceed with Testing

8.

LIST OF LVAC ELECTRICAL EQUIPMENT TEST I. Current Transformer test

II. Voltage Transformer test III. MCCB test

IV. Breaker with Micro logic Relay test V. Meter calibration

VI. Auxiliary relay test

VII. Busbar contact resistance test VIII. High voltage test

A. Current Transformer test:

Purpose: The following Tests shall be performed and Witnessed by the Clients to ensure the Current Transformer operations and it’s Specific Functions following the Approved SLD.

Procedure: All tests shall be in accordance with IEC standards IEC 60044 – 1 a.)The Visual Inspection shall include

Check nameplate information for correctness Check tightness of all CT secondary Terminal

Check that all grounding cables are securely connected

Check color codes(or)sleeves for secondary wiring and size of wires against specs Check proper lugs has been used in termination

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Date 13-02-11 b.)The Electrical Test shall include

Insulation Resistance Measurement Polarity Tests

CT Winding Resistance

Knee Point Voltage Measurement Ratio Test

c.)Insulation Resistance Measurement:

Purpose: To ensure that the CT is without any insulation failure.

Procedure: As per the standard IEC 60076, the calibrated Instrument was used to apply the +ve DC voltage to Test point and the –ve DC terminal for reference point (i.e. Earth) for various condition as per the attached format the test to be perform, and note down the value

Method: Based on the leakage current measurement from test point to reference point the insulation resistance value was calculated by the instrument automatically

d.)Polarity Tests:

Purpose: The test is to ensure that CT connected is optimized to the circuits and to ensure the direction of connections.

Procedure: During the ratio test the angle displacement for primary and secondary are measured by the testing kit automatically and confirmed the polarity.

Method: OK = phase Isec – phase Iprim = -45°< 0° < +45° NOT OK = all other cases

e.)CT Winding resistance Measurement:

Purpose: The Test to ensure that winding has got the acceptable resistance as per the FAT reports.

Procedure: Inject the test D.C Current and D.C voltage as per the recommendations into the winding at the temperature and the similar resistance shall be converted for 75 Deg C.

Measure the Resistance from the kit and recorded in the Test reports.

Method: Based on voltage drop between the winding, the resistance was calculated Note: Care should be taken for the Discharging the winding after the test.

f.)Knee Point Voltage:

Purpose: The test is to determine the saturation level of C.T. and to verify as per the Design requirement.

Procedure: The calibrated instrument was used to apply the AC voltage Gradually at CT secondary up to the level of mention VK in name plate

.

Method:According to IEC 60044-1, the knee point is defined as the point on the curve where a voltage increment of 10%Increases the current by 50%.

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Date 13-02-11 Note: Demagnetize the core after the test.

g.)Ratio Test:

Purpose: The test is to ensure that the Current transformer shall be selected for the opt ratio with the rated primary and the secondary current.

Procedure:The calibrated instrument was used to inject the recommended current to primary of the current transformer and measure the CT secondary.

Method: The magnitude of the measured secondary current and injected primary current the ratio and error was calculated by the instrument automatically.

Ratio: Measured pri (A) /Measured sec (A)

Error: (Kn x Isec - Iprim) / Iprim) x 100 Here: Kn-act pri/act sec  Test Documents:

Refer SAT for Current Transformer Test Sheet attached.

Note: Copy of the same test sheets will be used other Feeders CTs.

B. Voltage Transformer test:

Purpose: The following Tests shall be performed and Witnessed by the Clients to ensure the Voltage Transformer operations and its Specific Functions are following the Approved SLD.

Procedure: All tests shall be in accordance with IEC standards IEC 60044-2 a.)The Visual Inspection shall include

Check nameplate information for correctness Check tightness of all terminals

Check that all grounding cables are securely connected

Check color coded or sleeves for secondary wiring and size of wires against specs Check proper lugs has been used in termination

Check VT’s location physically and secondary terminal labeling printed b.)The Electrical Test shall include

Insulation Resistance Measurement Polarity Tests

VT Winding Resistance Ratio Test

c.)Insulation Resistance Measurement

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Date 13-02-11 Procedure: As per the standard IEC 60076, the calibrated Instrument was used to apply the +ve DC voltage to Test point and the –ve DC terminal for reference point (i.e. Earth) for various condition as per the attached format the test to be perform, and note down the value

Method: Based on the leakage current measurement from test point to reference point the insulation resistance value was calculated by the instrument automatically

d.)Polarity Tests:

Purpose: The test is to ensure that VT connected is optimized to the circuits and to ensure the direction of connections.

Procedure: During the ratio test the angle displacement for primary and secondary are measured by the testing kit automatically and confirmed the polarity.

Method: OK = phase Vsec – phase Vprim = -45°< 0° < +45° NOT OK = all other cases

e.)VT Winding resistance Measurement:

Purpose: The Test to ensure that winding has got the acceptable resistance as per the FAT reports.

Procedure: Inject the test D.C Current and D.C voltage as per the recommendations into the winding at the temperature and the similar resistance shall be converted for 75 Deg C.

Measure the Resistance from the kit and recorded in the Test reports.

Method: Based on voltage drop between the winding, the resistance was calculated Note: Care should be taken for the Discharging the winding after the test

f.)Ratio Test:

Purpose: The test is to ensure that the Voltage transformer shall be selected for the opt ratio with the rated primary and the secondary voltage.

Procedure:The calibrated instrument was used to inject the recommended Voltage to primary of the Voltage transformer and measure the VT secondary.

Method: The magnitude of the measured secondary voltage and applied primary voltage the ratio and error was calculated by the instrument automatically.

Ratio: Measured pri (V) /Measured sec (V)

Error: (Kn x Vsec - Vprim) / Vprim) x 100 Here: Kn-act pri/act sec  Test Documents:

Refer SAT for voltage Transformer Test Sheet attached.

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C. MCCB test:

Purpose:

This test verifies the MCCB Tripping characteristics and rating are following the given name plate as per the approved SLD data. In brief, the test verifies the MCCB trip test for each phase

Procedure:

1. Record the name and reference number of the panel to be tested in the test sheet

i. Trip test: The calibrated instrument used to inject the 2 times of set current of MCCB in each pole to pole, then the trip time was noted from the instrument and ensure that the time following the trip characteristic as per the name plate.

2. Record if any comments in the Indication and Correction Report Test Document:

Refer SAT Test Sheet

� SAT for MCCB: Copy of the same test sheets will be used for the other MCCB.

D. Breaker with Micro logic Relay test:

Purpose:

This test verifies the Micro logic relay Tripping characteristics and rating are following the given name plate as per the approved SLD data. In brief, the test verifies the Micro logic relay with Breaker trip test for each phase Procedure:

i. Trip test: The calibrated instrument used to inject the recommended current in Breaker pole to pole of each phase, then the trip time was noted from the instrument and ensure that the time following the trip characteristic as per the name plate.

� SAT for Micro logic relay: Copy of the same test sheets will be used for other Breaker Micro logic relay

E. Ammeters/voltmeter calibration:

Purpose:

This test verifies the Meters operation and rating are following the name plate as per the approved schematic. In brief, the test verifies the Meter error and operation of the particular meter.

Procedure:

i. Secondary injection test: The calibrated instrument used to inject from 0-1A of current in Meters secondary terminal, Based on the secondary value the meter will display primary values ,the displayed

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Date 13-02-11 primary value are noted and error are calculated manually using the below mention formula. Error = (Actual value - observed value)/ Actual value

� SAT for Ammeter/voltmeter: Copy of the same test sheets will be used for other Meters.

F. Auxiliary relay test:

i. Trip circuit supervision relay-XR350 Purpose:

This test verifies the functionality and properties of Trip Circuit Supervision Relay under test Procedure:

1. Select a Trip Circuit Supervision Relay from any one of the incomers 2. Record the Panel Reference in the test sheet

3. Perform the following routine tests which is applicable for this relay  Name Plate Rating Details

 General Inspection  Resistance Check  Secondary Injection Test

 Measurement of trip Circuit Current  Relay Operation Check

4. Record if any comments in the Indication and Correction Report attached. Test Document:

� SAT for XR-350 relay: Copy of the same test sheets will be used for other XR-350.

G. Busbar contact test:

Purpose:

This test verifies the contact resistance of LVAC switchboard Busbar under test Procedure:

1. Record the panel Reference in the test sheet

Contact resistance test: Test follows the standards IEC 62271-200,the calibrated testing instrument was used to inject recommended current in LVAC Busbar of each verticals, Based on the voltage drop of one end to other end of busbar the resistance was calculated by the instrument automatically. Ensure the value is following the FAT value

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Date 13-02-11 2. Record if any comments in the Indication and Correction Report attached.

Test Document: Refer SAT Test Sheet

� SAT for Busbar contact resistance

H. High voltage test:

Purpose:

This test verifies the Insulation level of LVAC switchboard Busbar under test Procedure:

1. Record the panel Reference in the test sheet

High voltage test: The calibrated testing instrument was used to apply recommended2000v AC (80% of FAT test voltage) in LVAC Busbar for each phase separately as per the format.Based on the leakage current measurement of busbar the Insulation level was ensured. Ensure the value is following the FAT value

2. Record if any comments in the Indication and Correction Report attached. Test Document:

� SAT for LVAC High voltage test

9.

Test Reports

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ATTACHED TEST FORMATS

1. SAT FOR LVAC CT TEST a) INCOMER CT TEST b) OUTGOING CT TEST 2. SAT FOR LVAC VT TEST 3. SAT FOR LVAC MCCB TEST

4. SAT FOR LVAC BREAKER WITH MICROLOGIC RELAY TEST 5. SAT FOR LVAC AMMETER CALIBRATION

6. SAT FOR LVAC VOLTMETER CALIBRATION 7. SAT FOR LVAC TRIP CKT SUPR-RELAY TEST 8. SAT FOR LVAC BUSBAR RESISTANCE TEST 9. SAT FOR LVAC HIGH VOLTAGE TEST

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CONTRACT: EPIC FOR ELECTRICAL AND TELECOM UTILITIES FOR SUPPORT SERVICES AREA PHASE I & II AND WEST END EXTENSION OF RAS LAFFAN CITY – GC081117B0

SITE ACCEPTANCE TEST FOR CURRENT TRANSFORMER Site location 33/11KV SS-1 Drawing No 2908-2-54-0206

Bay No LVAC Equipment CURRENT TRANSFORMER

LARSEN & TOUBRO QATAR PETROLEUM

Signature Signature

Name Name

Date Date

Doc. No. Page 1 of 2

1.1 METERING CT: INCOMER-01 & 02

Make : SACI

Sl. No : R- Y- B- 1.2. Name Plate Details

CT

Desgn. Core No. Class Ratio Rct KVP Burden Purpose

CT1 1 1 1200/1 - - 10VA KW-Metering

CT2 ₁ ₁ _1200/1 _- _- _10VA _KW-Metering

CT3 ₁ ₁ _1200/1 _- _- _10VA _KW-Metering

1.3. Insulation Resistance Measurement:

R-PHASE Y-PHASE B-PHASE

PRI TO EARTH PRI TO SEC SEC TO EARTH

Note: Primary – Earth done with 1KV and rest with 500 V Megger for 1 Min 1.4. Polarity Test

CT

Designation CORE NO TERMINAL R-PH Y-PH B-PH

CT1-3 1 S1-S2

1.5. CT Winding Resistance

CT Desgn. CORE NO TERMINAL

MEASURED RESISTANCE (IN m Ω)

R-PH Y-PH B-PH

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Signature Signature

Name Name

Date Date

1.6. Knee Point Voltage measurement: CT Desgn. CORE NO TERMINAL

R PHASE Y PHASE B PHASE

Vk (in

Volts) (in mA) Imag Vk (in Volts) (in mA) Imag Vk (in Volts) (in mA) Imag CT1-3 CORE1 S1-S2

1.7. Ratio Test CT

Designation Core Terminal Injected Primary Current (Amps)

Expected Sec.Current (Amps) Measured Sec.Current (Amps) % Error CT1 R-Phase S1-S2 600 0.500 CT2 Y-Phase S1-S2 600 0.500 CT3 B-Phase S1-S2 600 0.500

1.8. Check List for Print out

1. CT ratio and polarity test ( for all cores and taps) : 2. Knee point test ( for all cores and taps) : 3. Winding resistance test (for all core & taps) : 1.9. General Checks

1. Shorting of all unused cores : 2. Check for tightness of all CT terminals :

1.10 REMARK:

Sl.no Equipment / Instrument Make Equipment Sl No. Calibration Due 1

2 3 4

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Signature Signature

Name Name

Date Date

1. OUTGOING FEEDER CT’S: Q2, Q5, Q23 & Q28

Make : SACI

Sl. No : R- Y- B- 2. Name Plate Details

CT

CT1 1 1 250/1A - - 5VA Metering

3. Insulation Resistance Measurement:

Ref R-PHASE Y-PHASE B-PHASE

Note: Primary – Earth done with 1KV and rest with 500 V Megger for 1 Min 4. Polarity Test:

CT

CT1-3 1 S1-S2

5. CT Winding Resistance

CT Desgn. CORE NO TERMINAL MEASURED RESISTANCE (IN m Ω)

R-PH Y-PH B-PH

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Signature Signature

Name Name

Date Date

6. Knee Point Voltage measurement CT Desgn. CORE NO TERMINAL

Vk (in Volts) Imag (in mA) Vk (in Volts) Imag (in mA) Vk (in Volts) Imag (in mA) CT1-3 CORE1 S1-S2 7. Ratio Test CT

Designation PHASE Terminal Injected Primary Current (Amps)

8. Check List for Print out

1. CT ratio and polarity test ( for all cores and taps) : 2. Knee point test ( for all cores and taps) : 3. Winding resistance test (for all core & taps) : 9. General Checks

1. Shorting of all unused cores : 2. Check for tightness of all CT terminals : 3. Neutral Earthing / Single point Earthing : 10. Remarks

2 3 4

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Signature Signature

Name Name

Date Date

1. OUTGOING FEEDER CT’S: Q3, Q6, Q9 & Q20

Make : SACI

CT

CT1-3 1 S1-S2

R-PH Y-PH B-PH

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Signature Signature

Name Name

Date Date

2 3 4

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Signature Signature

Name Name

Date Date

1. OUTGOING FEEDER CT’S: Q1 & Q19

Make : SACI

CT

CT1-3 1 S1-S2

R-PH Y-PH B-PH

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Signature Signature

Name Name

Date Date

2 3 4

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SITE ACCEPTANCE TEST FOR VOLTAGE TRANSFORMER Site location 33/11 KV S/S-1 Drawing No 2908-2-54-0206

Bay No LVAC Equipment VOLTAGE TRANSFORMER

Signature Signature

Name Name

Date Date

For 1CPT1, 2CPT1, 3CPT1, 4CPT1 1. Name Plate Details

Make :

Sl. No : R- Y- B- Ratio : 415V/√3 / 110V/√3

Burden : 50VA

Purpose : Protection/Metering

2. Insulation Resistance Measurement: Minimum Value: 1M /KV Temperature : C

Description Applied Voltage _(VDC) R-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)

Primary –Earth 500 V

Primary- Secondary 500 V Secondary -Earth 500 V

3. Polarity Test :

VT Designation CORE NO TERMINAL R-PH Y-PH B-PH

XCPT1 CORE 1 1r - 1n 4. VT Winding Resistance:

Temperature: C

VT Designation CORE NO TERMINAL

MEASURED RESISTANCE ( IN OHMS)

R-PH Y-PH B-PH

At ambT At 75 C At ambT At 75 C At ambT At 75 C XCPT1 CORE 1 1r - 1n

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SITE ACCEPTANCE TEST FOR VOLTAGE TRANSFORMER Site location 33/11 KV S/S-1 Drawing No 2908-2-54-0206

Bay No LVAC Equipment VOLTAGE TRANSFORMER

Signature Signature

Name Name

Date Date

5. Primary Injection Test / Ratio Test: VT

Designation PHASE TERMINAL APPLIED PRIMARY VOLTS SEC.VOLTS CALC MEASURED SEC.VOLTS % ERROR XCPT1 R-PH 1r - 1n

XCPT1 Y-PH XCPT1 B-PH

VT ratio and polarity test ( for all cores and taps) : VT secondary winding resistance ( for all cores and taps) : 7. General Checks

General visual inspection :

Name plate details :

HV Terminal Marking :

LV Terminal Marking :

Check for tightness of all VT terminals : 8. General Checks

:

MCB rating :

Equipment Grounding System :

9. Remarks

2 3 4

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CONTRACT: EPIC FOR ELECTRICAL AND TELECOM UTILITIES FOR SUPPORT SERVICES AREA PHASE I & II AND WEST END

EXTENSION OF RAS LAFFAN CITY – GC081117B0 SITE ACCEPTANCE TEST FOR MCCB

Site location 33/11KV S/S-1 Drawing No 2908-2-54-0206

Bay No LVAC Equipment MCCB

LARSEN & TOUBRO QATAT PETROLEUM

Signature Signature

Name Name

Date Date

Doc.No. Rev

MOULDED CASE CB 1. Name Plate Details:

Make : MERLIN GERIN Feeder : Type : Frequency : 50 Hz

Aux. Volts : Nominal Current : Range : Feeder Ratings : 2. TRIP TEST

LONG INVERSE OVER CURRENT:

Phase Set _{(Is) Amp}

Operating time measured at 2Is (sec)

R –Phase Y-Phase B-Phase

MCCB Found Healthy : YES / NO 3. REMARK :

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4. SAT FOR LVAC MICROLOGIC

RELAY TEST

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SITE ACCEPTANCE TEST FOR MOULDED CASE C.B Site location 33/11KV S/S-1 Drawing No 2908-2-54-0206

Bay No LVAC Equipment MCCB WITH MICROLOGIC

Signature Signature

Name Name

Date Date

MOULDED CASE WITH MICROLOGIC TEST FOR QM1, QM2 & QB 1. NAME PLATE DETAILS:

MAKE MERLIN GERLIN TYPE NW12H1

FREQUENCY 50HZ NOMINAL CURRENT 1250 A

AUX VOLTS 110 V DC SERIAL NO

SETTINGS :

SHORT CIRCUIT INSTANETANEOUS

EARTH FAULT 2. BREAKER TESTS 2.1 SHORT CIRCUIT:

PHASE SETTING OF CURRENT INJECTED CURRENT OPERATED TIME R - PH

Y - PH B - PH

2.2 INSTANETANEOUS

PHASE SETTING OF CURRENT INJECTED CURRENT OPERATED TIME R - PH

Y - PH B - PH

2.3 EARTH FAULT

PHASE SETTING OF CURRENT INJECTED CURRENT OPERATED TIME NEUTRAL

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SITE ACCEPTANCE TEST FOR MOULDED CASE C.B Site location 33/11KV S/S-1 Drawing No 2908-2-54-0206

Bay No LVAC Equipment MCCB WITH MICROLOGIC

Signature Signature

Name Name

Date Date

3. Tripping of CB By simulating of Relay Operation

1. Relay found Healthy : Yes / No 2. Ammeter and Selector switch Found Healthy : Yes / No

3. Aux contacts : ok / with comments 4. REMARK:

2 3 4

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5. SAT FOR LVAC AMMETER

CALIBRATION

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EXTENSION OF RAS LAFFAN CITY – GC081117B0 SITE ACCEPTANCE TEST FOR AMMETER CALIBRATION

Bay No LVAC Equipment AMMETER

Signature Signature

Name Name

Date Date

Doc.No. Rev

AMMETER CALIBRATION 1. Name Plate Details:

Make : Feeder Ref : Type : Range : S.NO :

2. MEASUREMENT TEST

:

Secondary Injected Current in Amps

Expected Current in

(A) Ammeter Reading in (A) % Error

3. Ammeter Found Healthy: YES / NO Instruments Used:

SL.NO DESCRIPTION MAKE EQUIPMENT SL.NO CALIBRATION ON DATE CALIBRATION DUE DATE 1 2 3.

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6. SAT FOR LVAC VOLTMETER

CALIBRATION

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EXTENSION OF RAS LAFFAN CITY – GC081117B0 SITE ACCEPTANCE TEST FOR VOLTMETER CALIBRATION

Bay No LVAC Equipment VOLTMETER

Signature Signature

Name Name

Date Date

Doc.No. Rev

VOLTMETER CALIBRATION

1. Name Plate Details:

Make : Feeder Ref : Type : Range : S.NO :

2. MEASUREMENT TEST:

Injected Voltage in Volts Expected Voltage in

(kv) Voltmeter Reading in (kv) % Error

3. Voltmeter Found Healthy: YES / NO Instruments Used:

SL.NO Description MAKE EQUIPMENT _SL.NO CALIBRATION _{ON DATE} CALIBRATION _{DUE DATE} 1

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7. SAT FOR TRIP CKT SUPR

RELAY

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SITE ACCEPTANCE TEST FOR TRIP CKT SUPRV RELAY Site location 33/11KV S/S-01 Drawing No 2908-BG35-4004

Bay No LVAC Equipment XR-350

Signature Signature

Name Name

Date Date

Doc.No. Rev

1. Name Plate Rating Details of the Equipment

Relay Make REYROLLE

Relay Model XR350

MLFB Number 7PG1753-3CC10-4BE0 Serial Number

Rated Voltage 125 VDC

Rated Frequency DC

Contacts Details 2NO; 2NC 2. General Inspection of Relay

S.No Description Pass Fail

1 Installation and Correct Wiring as per drawing 2 Terminal Tightness

3 Relay Earth Connected to Local Earth Bar 3. Resistance Check

Measure the resistance of each coil and its external resistor; record the values in the following table Element Coil Resistance External Resistance

A B C

4. Secondary Injection

Inject the relay including the external resistor, and record the values of pick-up voltage and current in the following table.

Element Pick-Up Volts Pick-Up Current

A B C

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SITE ACCEPTANCE TEST FOR TRIP CKT SUPRV RELAY Site location 33/11KV S/S-01 Drawing No 2908-BG35-4004

Bay No LVAC Equipment XR-350

Signature Signature

Name Name

Date Date

Doc.No. Rev

5. Referring to the circuit diagram, replace the trip link with an ammeter and, with the trip circuit operational, measure the trip circuit current with the breaker in the open and closed state.

Breaker Open mA

Breaker Closed mA

6. With CB closed short in turn coil A and check for no trip 7. Check for relay Operation by breaking the trip circuit continuity

Instruments Used:

Sl.no Description Make Equipment Sl.no Calibration On date Calibration Due date 1 2

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8. SAT FOR MAIN CIRCUIT

RESISTANCE TEST

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EXTENSION OF RAS LAFFAN CITY – GC081117B0 SITE ACCEPTANCE TEST FOR LVAC MAIN CIRCIUT RESISTANCE

Bay No LVAC Equipment BUSBAR

LARSEN & TOUBRO LTD QATAR PETROLEUM

Signature Signature

Name Name

Date Date

Make : BIN GHALIB Type : 3PH 4 BUS Serial No. :

Rated current : 1600A Rated frequency : 50HZ Rated Voltage : 415V Short time rating : 50KA/SEC Control voltage : 110V DC

Sl.No. Contact Resistance Between _Cubicles _micro-ohmsR-phase in _micro-ohmsY-phase in _micro-ohmsB-phase in NEUTRAL in _micro-ohms 1 COL:1- COL:02 2 COL:1- COL:03 3 COL:1- COL:04 4 COL:1- COL:05 5 COL:1- COL:06 6 COL:1- COL:08 7 COL:1- COL:09 8 COL:1- COL:10 9 COL:1- COL:11 10 COL:1- COL:12 11 COL:1- COL:13 12 --- 13 ---

Bus bars Found Healthy : YES / NO REMARK:

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9. SAT FOR BUSBAR HIGH

VOLTAGE TEST

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EXTENSION OF RAS LAFFAN CITY – GC081117B0 SITE ACCEPTANCE TEST FOR LVAC HV TEST

Bay No LVAC Equipment LVAC BUSBAR

Signature Signature

Name Name

Date Date

Doc.No. Rev

HIGH VOLTAGE TEST FOR 415V LVAC BOARD Make : BIN GHALIB Type : 3PH 4 BUS Serial No. :

Rated current : 1600A Rated frequency : 50HZ Rated Voltage : 415V Short time rating : 50KA/SEC

1. INSULATION RESISTANCE TEST: (1KV FOR 1 MINUTE) MAIN CIRCUIT MEGGER VALUE BEFORE _{HV TEST} MEGGER VALUE AFTER _{HV TEST} R (Y+B+N+PE)

Y (B+R+N+PE) B (N+R+Y+PE) N (PE+R+Y+B)

2. HV VOLTAGE : 2000V AC FOR 60SEC

REF Leakage Current in mA R (Y+B+N+PE)

Y (B+R+N+PE) B (N+R+Y+PE) N (PE+R+Y+B)

BUS BAR FOUND HEALTHY: OK / NOT 3. REMARK: