doc

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L3

N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

P h a se L 3 M od u le Id> =8 7B

L2

2000/5

REB 670 L1 REB 670 L2REB 670 L3

=8 7B

L1

Id>

=8 7B Id>

P h a se L 3 M od u le Id> =8 7B

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le Id> =8 7B

QA1

QB 2

P h a se L 1 M od u le

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc1/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L3

N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

P h a se L 3 M od u le Id> =8 7B

L2

2000/5

REB 670 L1 REB 670 L2REB 670 L3

=8 7B

L1

Id>

=8 7B Id>

P h a se L 3 M od u le Id> =8 7B

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le Id> =8 7B

QA1

QB 2

P h a se L 1 M od u le

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc2/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc3/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc4/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc5/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc6/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc7/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc8/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc9/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED

-

R VIA BB 1

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R VIA BB 2

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20

PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection BB1 BB2 QB 2

QB1

QA1

L1 L2

2000/5

L3 N

N

Ref. BAY Step-dow n injection transform er

L1

L2

L3

REB 670 L1 REB 670 L2REB 670 L3

P h a se L 3 M od u le Id> =8 7B

=8 7B Id>

P h a se L 3 M od u le =8 7B Id>

L3

P h a se L 2 M od u le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M od u le Id> =8 7B

L1

P h a se L 2 M od u le =8 7B Id>

QA1

QB 2

P h a se L 1 M od u le Id> =8 7B

QB1

Tested BAY L1

L2

L3

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications.

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc10/24

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

SITE TEST RECORD SHEET

BUSBAR PROTECTION – PRIMARY CURRENT

INJECTION

IED: REB 670 PRIMARY INJECTED CURRENT: INJECTION

SECONDARY CURRENTS READING REF. BAY TESTED BAY

PHASE

INJECTED R

BB1 TO BB2 VIA BUS COUPLER

-

Y

-

B

-

-

Y

-

B

-

-

-

-

-

-

-

NOTE

-

-

R

BB2 TO BB1 VIA BUS COUPLER

A,

-

-

-

-

-

-

-

-

-

-

BAYS UNDER TEST

In discrimination zones Z1&Z2 restraining and differential currents recorded:Ratio Irestr/Idiff >20 PROTECTION STABILITY: OK NO TRIP

STATUS AND OVERALL TEST ESULTS: POSITIVE

Arrangement of Busbar Protection Testing by Primary Current Injection

BB1 BB2

B.Coupler BAY QB1

QB 2

QB1

QB 2

QB1

QA1

QB 2

QA1

QA1

R

Y

B

Tested BAY R

Y

B

CTs Ratio, polarity, secondary leads phasing, grounding line side CT terminals checked by primary current injection. Primary current was low due to high impedance of loop injected. Injected current level meets requirements for a/m checks and verifications

ZOZIK Testing eng.

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc11/24

Witnessed by:

= 87B Id >

= 87B Id >

P ha se L 3 Mo du le

= 87B

N

Ref. BAY S t ep -d own in jec t io n t ra ns f orm e r

Id >

L3

N

N

P ha se L 2 Mo du le

L2

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P ha se L 1 Mo du le

= 87B

= 87B Id >

L1

Id >

P ha se L 3 Mo du le

= 87B Id >

P ha se L 2 Mo du le

L3

REB 670 L1 REB 670 L2 REB 670 L3

P ha se L 1 Mo du le

L2

2000/5

= 87B

= 87B

L1

Id >

Id >

= 87B

P ha se L 3 Mo du le

L3

Id >

L2

P ha se L 2 Mo du le

2000/5

REB 670 L1 REB 670 L2 REB 670 L3

P ha se L 1 Mo du le

L1

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION BB1 BB2

BUS COUPLER

QB1

QB 2

QB1

Q B2

QB1

QB 2

QA1

F4

Q0

P2 P1

QA1

QA1

P1

P1

P2

P2

E s1

CT Secondaries

s2 L1

L2

N

L3

L2

s1 L1

N

L3

P h a se L 1 M o d u le Id> =87B P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

L2

L3

N

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 3 M o d u le Id> =87B

s1 L1

s2

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 2 M o d u le Id> =87B

s2

REB 670 L1 REB 670 L2 REB 670 L3

P h a se L 1 M o d u le Id> =87B

E

E

P h a se L 1 M o d u le Id> =87B P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

F2 BB1 BB2

BUS COUPLER

QB1

Q B2

QB1

Q B2

QB1

QB 2

QA1 QA1

P2 P1

QA1

P1

P1

P2

P2

s1

CT Secondaries

s2 L1

L2

L3

N

ZOZIK Testing eng.

s1 L1

s2 L2

L3

P h a se L 1 M o d u le Id> =87B P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

s1 L1

N

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc12/24

L2

L3

P h a se L 1 M o d u le Id> =87B P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

N

REB 670 L1 REB670 L2 REB 670 L3

P h a se L 3 M o d u le Id> =87B

s2

REB 670 L1 REB670 L2 REB 670 L3

P h a se L 2 M o d u le Id> =87B

REB 670 L1 REB670 L2 REB 670 L3

P h a se L 1 M o d u le Id> =87B

E

E

E

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

F1 BB1 BB2

BUS COUPLER

QB 2

QB1

Q B2

QB1

QB 2

QB1

QA1 QA1

P2

QA1

P1

P1

P1

P2

P2

E s1

CT Secondaries

s2 L1

L2

L3

N

E s2 s1 L1

P h a se L 3 M o d u le Id> =87B

L2

L3

s1 L1

N

P h a se L 1 M o d u le Id> =87B P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

L2

L3

N

REB670 L1 REB 670 L2 REB670 L3

P h a se L 2 M o d u le Id> =87B

s2

REB670 L1 REB 670 L2 REB670 L3

REB670 L1 REB 670 L2 REB670 L3

P h a se L 1 M o d u le Id> =87B

E

P h a se L 1 M o d u le Id> =87B P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

BB1 BB2

BUS COUPLER

QB1

Q B2

QB1

QB 2

QB1

Q B2

QA1 QA1

P2 P1

Q A1

P1

P1

P2

P2

E s1

CT Secondaries

s2 L1

L2

L3

P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

ZOZIK Testing eng.

s2 s1 L1

E s2

L2

P h a se L 1 M o d u le Id>

s1 L1

N

L3

=87B

P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

Witnessed by:

File Name:65. Low impedance Busbar Protection System.doc13/24

L2

L3

P h a se L 1 M o d u le Id>

=87B

P h a se L 2 M o d u le Id> =87B P h a se L 3 M o d u le Id> =87B

N

REB 670 L1 REB670 L2 REB 670 L3

=87B

E

REB 670 L1 REB670 L2 REB 670 L3

Id>

REB 670 L1 REB670 L2 REB 670 L3

P h a se L 1 M o d u le

N

F3

Witnessed by:

Substation:

Contract: KRG-MOE

Stage 5

Busbar differential Protection System – SECONDARY and PRIMARY CURRENT INJECTION

Site Test Record Sheet for Busbar Protection System – SECONDARY CURRENT INJECTION WITH BUS COUPLER IN SERVICE.

Busbar Protection REB 670 Blocking of Bus Coupler Test Circuit: Bus coupler with two neighboring feeders Nominal C Breaker bck-up time: 150 m.sec Tolerance: Measured time – Nominal time