P921(27 59) Test Report Rev 2

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SUMMARY REVISION PAGES 1 2 1 PURPOSE OF TESTS 2 X 2 REFERENCE DOCUMENT 2 X 3 SCOPE 2 X 4 RELAY TERMINLOGY 3 X 5 TEST EQUIPMENT 3 X 6 PRE-REQUISTES 3 X 7 PROCEDURES 4 X

8 RECORD TEST SHEET 6 X

8.1 RELAY INFORMATION 8.2 VT DATA:

8.3 PRODUCT CHECKS

8.4 MEASURMENT VALUE TEST:

8.5 OVER VOLTAGE PROTECTION X

8.6 UNDER VOLTAGE PROTECTION 8.7 BINARY INPUT TEST :

8.8 BINARY OUTPUT TEST:

8.9 FIXED LED INDICATIONS TEST:

8.10 LED INDICATIONS TEST:

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1 PURPOSE OF TESTS

The purpose of the tests is to check the full functionality of the protection relay.

This procedure does not intend to check that all alarms and trips are correctly sent to the DCS or SCADA level. This part is already developed into dedicated DCS or SCADA Commissioning procedures.

This procedure does not intend to check all tripping matrix and PSL logic tests, this, when applicable, is described into a separate document, dedicated to the specific substation and feeder type.

2 REFERENCE DOCUMENTS

DOCUMENT _REFERENCEDOCUMENT VERSION/_DATE REMARKS

Protection Line Diagram Schematic Drawing Service Manual Operation Manual

Protection Relay Coordination Principles Relay setting Calculation

LED Display Configuration

3 SCOPE

Substation Name :- Diameter:

Bay :

Panel Number :

Relay Denomination in Scheme

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4 TERMINOLOGY

Code ( ANSI) Terminology

27/59 Over/Under Voltage Relay

5 TEST EQUIPMENT USED

Sl No Description Make Equipment_{Sl No.} Calibration_date Calibration due_date

1. Secondary

Injection Kit

2. Multimeter

3. Laptop _NA

Setting software Type : MICOM S1 Studio

Version : 2.14

6 PRE - REQUISITES

PRE-REQUISITES REMARKS

All Safety Condition Are Ok

All Competent Personnel Available For The Test Ac & Dc Supply Availability And Security PPE Safety Available.

All Other Relevant Safety Instructions Been Followed Coordination With Other Parties ( GIS, Transformer, Etc..)

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7 TEST PROCEDURES

The following procedures are written for demonstrating the main protection functions of the P921 relay using an Omicron test set or similar. The tests do not test the boundaries of all available function characteristics. They do test that the function is operating at a point on one chosen characteristic. This document is to be referred to when performing commissioning tests in association with the

commissioning section of the service manual.

NOTE :

All the Test are performed in the Test Switch.

Omicron CMC156 Test Equipment or Any Equivalent To Be Used..

7.1 Testing Over/Under Voltage function Values to be measured:

1. stage (V>) or (V<) 2. time delay (tV>) or (tV<)

7.1.1 Stage (V>) check:

1. If time delay (tV>) is short, gradually inject the voltage into the 3 phases up to the Stage value: tripping should occur for a voltage equal to the stage (V>) to within ±2%

2. If time delay (tV>) is long, inject a voltage equal to 0.98x(V>) into the 3 phases and check that tripping does not occur. Then inject 1.2x(V>) and check that tripping occurs.

3. Gradually reduce the voltage on one of the phases and measure the value of the dropoff stage (V>) : the function must reset for a voltage less than or equal to the programmed hysteresis.

7.1.2 Stage (V<) check:

1. If time delay (tV<) is short, gradually reduce the voltage on the 3 phases from the rated voltage to the stage value: tripping should occur for a voltage equal to the stage (V<) to within ±2%

2. If time delay (tV<) is long, inject a voltage equal to 1.02x(V<) into the 3 phases and check that tripping does not occur. Then inject 0.8x(V<) and check that tripping occurs.

3. Gradually increase the voltage on one of the phases and measure the value of the dropoff stage (V<) : the function must reset for a voltage greater than or equal to 1.02x(V<).

7.1.3 Action check:

1. appearance of an alarm message on the display 2. flashing of the “Alarm” LED

3. illumination of the “Trip” LED if tripping is programmed

4. illumination of the LEDs associated with instantaneous information (V>) and (V<) and time-delayed information (tV>) and (tV<) if programmed

5. trip relay operation (RL1) if programmed

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7.1.4 Time delay (tV>) check:

1. Preset the injection voltage to a value equal to 2x(V>). 2. Inject the voltage into the 3 phases simultaneously.

3. Measure the time delay (tV>): it must be equal to the parametered value ±2% (or a minimum of ±20ms).

7.1.5 Time delay (tV<) check:

1. Disconnect the previously injected voltage.

2. Measure the time delay (tV<): it must be equal to the parametered value ±2% (or a minimum of ±20ms).

7.2 Testing of Binary Inputs :

This test checks that all the opto-isolated inputs on the relay are functioning correctly. (2) opto-isolated inputs for the P921).

The opto-isolated inputs should be energized one at a time. Ensuring correct polarity, connect the auxiliary voltage to the appropriate terminals for the input being tested.

The line "INPUTS" in the "OP. PARAMETERS" menu gives the state of each input, a '1' indicating an energized input and a '0' indicating a de-energized input. When each input is energized one of the digits on the bottom line of the display will change to the value shown in Table 3 to indicate the new state of the inputs.

7.3 Testing of Binary Output’s :

This test checks that all the output relays are functioning correctly. (4 output relays for the P921).The output relays should be energised one at a time. Connect a continuity tester across the terminals corresponding to output relay 1 .

In the following window in the "Relay Satus" sub-menu of the "OP PARAMETERS" menu: Relay 8 7 6 5 4 3 2 1

Status 0 0 0 0 0 0 0 1

Repeat the test for each relay.

Operation will be confirmed by the continuity tester operating for a normally open contact and ceasing to operate for a normally closed contact.

NOTE: It should be ensured that thermal ratings of anything connected to the output relays during the test procedure is not exceeded by the associated output relay being operated for too long. It is therefore advised that the time between application and removal of relay testing kept to the minimum.

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If the Outputs are assigned for function this will be tested along with Functional test of relays. 7.4 Testing of Blocking logic :

1. connect a three phase voltage on the relay. 2. activate the ‘’blocking ‘’ logical input,

3. remove the three phase voltage under the V<< threshold, 4. check that the relay does not trip.

8 RECORD TEST SHEET 8.1 RELAY INFORMATION

Type No.: P921 Designation :

Model No : Nominal Current :

Serial Number Nominal Voltage` :

Firmware Version : Aux. Volts :

8.2 VT DATA:

VT Rated primary voltage (L-L) set as

Rated secondary voltage (L-L) set as

8.3 PRODUCT CHECKS

Relay damaged?

Rating information correct for installation? Case earth installed?

External wiring checked against diagram? Test block connections checked?

Measured auxiliary supply V dc

LCD front panel display Clock set to local time?

Time maintained when aux. supply removed?

8.4 MEASURMENT VALUE TEST: Voltage Measurement

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Phase injected Voltage applied (Volts) Voltage read on relay display

L1-E 63.5

L2-E 63.5

L3-E 63.5

8.5 OVER VLOTAGE PROTECTION: 8.5.1 Over Voltage Stage 1 ( U>)

Phase

Sensitivity test Characteristic test

Setting _VoltagePickup Drop Off_Voltage Char _SettingTime Injected_Voltage Measured_{op. time}

R-Y sec

Y-B sec

B-R sec

8.5.1 Over Voltage Stage 2 ( U>>) Phase

R-Y sec

Y-B sec

B-R sec

8.6 UNDER VLOTAGE PROTECTION: 8.6.1 Under Voltage Stage 1 ( U<)

Phase

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Y-B sec

B-R sec

8.6.2 Under Voltage Stage 1 ( U<<) Phase

Setting Pickup Voltage Drop Off Voltage Char Time Setting Injected Voltage Measured op. time R-Y sec Y-B sec B-R sec

8.6.3 BLOCKING LOGIC TEST

Item LOGIC STATUS EXPECTED ACTION Result

1 BLOCK LOGIC 0( line Closed) If UV Occurs , Relay will Trip

2 BLOCK LOGIC 1( line is Open) If UV Occurs , Relay will NOT_Trip

8.7 BINARY INPUT TEST :

Input No. Terminal No. Active Function Assigned sheet Result

1 22-24 High BLOCK LOGIC 213

2 _26-28 _High _SPARE* ₂₁₃

* SPARE: wired up to terminal blocks. ** NOT USED: Not wired.

8.8 BINARY OUTPUT TEST:

Output No. Terminal No. Type Function Assigned _{(Aux relay operated)} sheet Result

1 2-6 NO 3-PH TRIP TO 86A 203

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2 8-12 NO O/V TRIP (27/59X) 213

8-10 NC

3 14-16 NO BLOCK LOGIC OF _{27/59 INPUT 1} 216

4 18-20 NO 3-PH TRIP TO 86B 217

* SPARE: wired up to terminal blocks. ** NOT USED: Not wired.

8.9 FIXED LED INDICATIONS TEST:

LED No. LED Label Color Result

1 Trip Red

2 Alarm Yellow

3 Warning Yellow

4 healthy Green

8.10 LED INDICATIONS TEST: ( LEFT SIDE LED)

LED No. LED Label Color Result

1 2 3 4

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Item Description Result

1 All test equipment, leads, shorts and test block removed safely?

2 Disturbed customer wiring re-checked?

3 All commissioning tests disabled?

4 Circuit breaker operations counter reset?

5 Event records reset?

6 Fault records reset?

7 Disturbance records reset?

8 Alarms reset?

9 LEDs reset?

10 Secondary front cover replaced? (If applicable)

REMARKS ……… ……… ……… ……… END OF REPORT