Control Cable Required For 33/11KV Sub-Station
10 Core Cable:
Used for Wiring from Control Room To Breaker.
a. Within Breaker (4 X 6M) = 24 M
b. LV Breaker to Control Room (1 X 25M) = 25 M
c. Feeder Breakers to Control Room (3 X 40M) = 120 M
(35m+37m+40m) arrox 40m
d. One Length for Group Control (1 X 40M) = 40 M
Total 210 M (250 M Approx).
4 Core Cable:
a. CTs to Breaker (3 X 10M) = 30 M
b. 1 LV Breaker + 3 Feeder Breakers (4 X 30M) = 120 M
c. LV to PTR (1 X 10M) = 10 M
d. LV To Control Room(Voltmeter) (1 X 25M) = 25 M
e. PT Supply - AC, PT Section Box to Breakers (1 X 60M) = 60 M
(10m+15m+20m+15m)
Total 200 M (250 M Approx).
2 Core Cable:
a. Chargers to Breaker (4 X 20M) = 80 M
b. Station DTR Junction Box to Each Charge
and Charger to Breaker (5m+5m+10m+10m) = 30 M
Total 110 M.
All above Calculations were done by assuming that the control room will be constructed on 33 KV Side.
