SS_09 05 17

(1)

ANNEXURE-1

INPUTS REQUIRED OF CONGO CROSS SUBSTATION

S.No. Inputs Required Remarks

1

1) Incomer from Kingtom -1 details :

Type of conductor AL

Type of Shield Type of Sheath Armour & Jacket

Impedance ( Zero, Positive & Negative – R Parameter )

Impedance ( Zero, Positive & Negative – X Parameter )

Impedance ( Zero, Positive & Negative – L Parameter )

Impedance ( Zero, Positive & Negative – Z Parameter )

Impedance ( Zero, Positive & Negative – C Parameter )

Number of runs 1 1

Number of core 3

Area of conductor 185mm2

Type of conductor copper

Activity Responsibility

(K & A) Date of Received Inputs Substations wise Inputs

Required : a) Congo Cross 11KV Switchgear a) Cable details Number of runs

1

Number of core

3

Area of conductor 3 x 185 mm2 Length of cable 2862 m Type of Insulation PILC

b) Protection Relay details Type MCGG

Model Number MCGG52H1CD0753D Type of Curve STANDARD INVERSE Relay Setting values of existing system 420 A

c) Maximum Load Demand 400 A d) Power Factor 0.8

e) X/R ratio.

f) Circuit Breaker Operation Philosophy

g) Short Circuit Current (KA) 20kA@3s

2) Outgoing to Murray Town details: STEG(No Breaker)

(2)

Length of cable

Type of Insulation XLPE

Impedance ( Zero, Positive & Negative – Z Parameter ) b) Protection Relay details

Type MCGG

e) X/R ratio.

f) Circuit Breaker Operation Philosophy

g) Short Circuit Current (KA) 20kA@3s

3) Outgoing to Murray Town details: a) Cable details

Number of runs

1(ABC)

Number of core

3

Area of conductor 3 x 150 mm2 Type of conductor Al Length of cable 250 m Type of Insulation XLPE

(3)

Impedance ( Zero, Positive & Negative – C Parameter ) b) Protection Relay details

Type MCGG

e) Circuit Breaker Operation Philosophy

f) Short Circuit Current (KA)

4) Outgoing to Signal Hill HT feeder details: a) Cable details

Number of runs

1

Number of core

3

Area of conductor 3 x 240 mm2 Type of conductor COPPER Length of cable 1100 m Type of Insulation PILC

Model Number MCGG52H1CD0753D Type of Curve STANDARD INVERSE Relay Setting values of existing system 260 A

e) Circuit Breaker Operation Philosophy

(4)

Number of runs Number of core Area of conductor Type of conductor Length of cable Type of Insulation Type of Shield Type of Sheath Armour & Jacket

150 ACSR

Impedance ( Zero, Positive & Negative – L Parameter ) 5) Bus Coupler details (No Breaker):

a) Cable details

c) Circuit Breaker Operation Philosophy.

d) Short Circuit Current (KA)

6) Outgoing to Wilberforce HT feeder details : a) Cable details

Number of runs

1

Number of core

3

Area of conductor 185 mm2 Type of conductor COPPER Length of cable 2500 m Type of Insulation XLPE

(5)

Faulty b) Protection Relay details

Type MCGG

c) Circuit Breaker Operation Philosophy.

d) Short Circuit Current (KA) 20kA@3s

7) Outgoing to Bata Plastic HT feeder details : a) Cable details

Number of runs

1

Number of core

3

Area of conductor

3 x 120 mm

2 Type of conductor COPPER Length of cable 2500 m Type of Insulation XLPE

c) Maximum Load Demand 200 A d) Power Factor 0.8 e) Circuit Breaker Operation Philosophy.

8) Outgoing to Technical Institute details: (No Breaker & Cable is Faulty)

(6)

Number of core Area of conductor Type of conductor Length of cable Type of Insulation Type of Shield Type of Sheath Armour & Jacket

Number of core single

Impedance ( Zero, Positive & Negative – X Parameter ) a) Cable details

Number of runs NO CABLE

Model Number MCGG52H1CD0753D Type of Curve STANDARD INVERSE Relay Setting values of existing system 260 A c) Maximum Load Demand 400 A d) Power Factor. 0.8 e) Circuit Breaker Operation Philosophy.

9) Outgoing to Local Trafo of 1000 KVA details: a) Cable details

Number of runs

1

Area of conductor 1 x 70 mm2 Type of conductor COPPER Length of cable 8 m Type of Insulation XLPE

(7)

10) Incomer from Freetown 161 JICA HT details :

Impedance ( Zero, Positive & Negative – C Parameter ) b) Protection Relay details

Type MCGG

Model Number MCGG52H1CD0753D Type of Curve STANDARD INVERSE Relay Setting values of existing system 50 A c) Maximum Load Demand 50 A d) Power Factor. 0.8

e) Circuit Breaker Operation Philosophy.

a) Cable details

Number of runs

1

Number of core

3

Area of conductor

3

x185mm2 Type of conductor COPPER Length of cable 200 m (UG) + 3300m (OHL)

Type of Insulation XLPE

Model Number MCGG52H1CD0753D Type of Curve STANDARD INVERSE Relay Setting values of existing system 400 A c) Circuit Breaker Operation Philosophy.

(8)