In India Power plants generates power at voltage 11 KV . Since, this voltage do not suffice to cover the large distance from power plant to our homes. To do this voltage raised from 11 KV to 220 KV / 400 KV and then these voltages should bring to 440 V or 230 V to use in our homes or industries. To do this we use Substations. In substations their is a Transformer which transmits the power from one voltage to another voltage. The is also some protecting devices like Breakers, Lightening Arresters which protect those lines from faults.
Showing posts with label substation. Show all posts
Showing posts with label substation. Show all posts
Friday, July 24, 2015
Thursday, April 17, 2014
Control Cable Required For 33/11KV Sub-Station
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.
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