Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2P741

87B1-ALow Impedance differential relay

P742 P742 P742

F/O

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-2

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

P741

87B2-ALow Impedance differential relay

P742 P742 P742

F/O 87B1-A

Low Im

pedance differential relay

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2P14287B1-B

High Impedance differential relay

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-3

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

87B2-BHigh Impedance differential relay

P142

87B1-B

High Im

pedance differential relay

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

P142

TEEHigh Impedance differential relay

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-4

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

TEE

1H

igh Impedance

differential relay

To Remote end trip via DTT

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

21A/67NADistance RelayDEFStub bus

P443

PO

R c

omm

unic

atio

n sc

hem

e (1

)

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-5

BUS 4B2

GC

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-C8-2010-48-0200-0034 00

In case line isolator opened, MiCOM P443 is converted to overcurrent relay.(stub bus protection)

(1)POR : Permissive Over reach(Téléaction sent for Z2 fault)

21A/67N

AD

istance Relay

DE

FS

tub bus

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

(1)Back up distance function automatically set in operation in case of line differential communication failureOnly Zone 1 is used :Z1 : 70% of the lineNo teleactionNo reverse zoneInternal VT supervision blockPower swing block

87LB/21 BU67 BULine diff. relayBack up distance (1)Back up overcurrent (2)

P544

Com

munication

(single channel)

(3)

(2)Back up directional

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-6

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

(3)Intertrip signal via communication channel of MiCOM P544

Back up directional overcurrent function automatically set in operation in case of line differential communication failureInverse time overcurrentSee appendix 7-3

87LB/

21BU

/50B

ULine diff. relay

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

27/59Over and under voltage

P141

Intertripping rem

ote end (1)

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-7

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

Intertripping rem

ote end

27/59O

ver and under voltage

(1) Tripping from function 59(over voltage) onlyNo tripping from function 27 (under voltage)

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

P142

Trip

Protected zone

87RAHigh Impedance differential relay

33kV SST.breaker Trip

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-8

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

87RA

High Im

pedance differential relay

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

Protected zone

P132

87RBHigh Impedance differential relay

Trip

33kV SSTbreaker Trip

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-9

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

87RB

High Im

pedance differential relay

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

50/51NRNon DirectionalEarth Fault

Trip

P141

50/51RNon directionalPhase O/C

33kV SST breaker Trip

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-10

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

50/51NR

Non D

irectionalE

arth Fault

50/51RN

on directionalP

hase O/C

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

P141

50RNEarth Fault

Alarm to DCS

Trip

33kV SSTbreaker Trip

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-11

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

50AL

Earth Fault

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-12

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

TEE1High Impedance differential relay

P142

Intertripping rem

ote end

TEE

1H

igh Impedance

differential relay

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-13

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

TEE2Low Impedance differential relay

P633

Intertripping rem

ote end

TEE

1H

igh Impedance

differential relay

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-14

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

Line Dist relay

7SA522

Com

mun

icat

ion

7SD522

Line diff. relay

HV

DC

Line diff. relay

Com

mun

icat

ion

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-15

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

32R (1)Active power relayReverse

32F (2)Active power relayForward

P132P132Alarm Intertripping

remote end 32R

Active pow

er relayR

everse

32FA

ctive power relay

Forward

Applicable for any feeder interfaced with utility (1) 32R Export Power (from utility toward GCCIA)(2) 32F Import Power (from GCCIA toward utility)(3) At Al Fadhili : 32F alarm only

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

Close

P841 79/25AutorecloserVoltage control

Important note : the Voltage control function is used to check In case of 3p autoreclose sequence only

Close

P841

Close

P841

line VT

line VT

Close

P841

bus VT

line VT

bus VT

line VT

Close

P841

line VT

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-16

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

autoreclose sequence only

Close

P841

Close

P841

bus VT

line VT

bus VT

line VT

79/25A

utorecloserV

oltage control

line VT

line VT

Close

line VT

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

7VE61

Close

25A/25SCSynchronizer

7VE61

Close

25A/25SCSynchronizer

7VE61

Close

25A/25SCSynchronizer

7VE61

Close

25SCSynchro check

Important note :used to check Live Bus Live line conditions. In case of manual close from BCU only when BCU not able to

line VT line VT

Bus VT

line VT

Bus VT

line VT

7VE61

Close

25A/25SCSynchronizer

7VE61

Close

25A/25SCSynchronizer

line VT

line VT

line VT

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-17

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

Close

7VE61

Close

25A/25SCSynchronizer

Close

7VE61

Close

25A/25SCSynchronizer

only when BCU not able to give directly the authorization for closing- initiation of MX3EG is received from BCU-if conditions are OK : Breaker closing given by 7VE61-if conditions are not OK :

(1)Relays installed in the panels with inputs connected but close command not connected

25AS

ynchronizer

-Voltage rise or decrease signal sent to BCU-Frequency rise or decrease signal sent to BCU-Signal “Synchro in progress” sent to ICC

line VT line VT

line VT

Bus VT

line VT

Bus VT

Close

Bus VT

7VE61

Close

25SCSynchro check

Bus VT

line VT

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

50/62Breaker Failure

P841

1st stage (Retrip)

Tripping of adjacent breakers through P740 bus bar protection tripping circuit and P142 protection tripping

2nd

stage trip

2nd

stage trip2nd

stage tripNote : retrip is sent

to the two trip coils

2nd stage trip

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-18

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

2nd

stage trip

protection tripping circuit

Intertripping to rem

ote end

50/62B

reaker Failure

trip

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

50/62Breaker Failure

P841

2nd stage tripNote : retrip is sent

to the two trip coils

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-19

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

2nd

stage trip

1st stage (Retrip)

Intertripping remote end

50/62B

reaker Failure

Salwa L11 Salwa L12

Contractor N

°G

CC

IA-3-A

/SIL-34-D

-200 00

33kV

BUS 4A2

33kV

Reactor XL1 Reactor XL2

2nd

stage trip

Tripping of adjacent breakers through P740 bus bar protection tripping circuit and P122

Note : retrip is sent to the two trip coils

Shuweihat L14Shuweihat L13

GC

CIA

N°

Page 2-20

BUS 4B2

GC

CIA

-C8-2010-48-0200-0034 00

50/62Breaker Failure P841

1st stage (Retrip)

tripping circuit and P122 protection tripping circuit

2nd

stage trip

2nd

stage trip

2nd

stage trip

50/62B

reaker Failure