What distance is safe for 11 kV power lines?
As per the Indian Electricity Act, buildings should maintain a horizontal distance of 1.2 metres from 11kV lines and 4 metres from 66kV lines.
What is the difference between 11kV and 22kV?
RE: 11kV vs 22kV distribution voltage …22kV can carry twice the load of 22kV. For two reasons for choosing 11kV over 22kV, one is that protection systems would be cheaper and smaller. The other is power correction of an 11kV system would require smaller devices as well.
How much does a substation transformer cost?
While the cost for one additional transformer foundation and appurtenant materials might cost about $150,000, the transformer itself might cost anywhere from $900,000.00 to $1,200,000.00 depending on it’s capacity.
How much current is in 11kV line?
Take a 11kV/415v, 500KVA distribution system. Then maximum current on HV side = 500/{sqrt(3) * 11} = 26.24 A. maximum current on LV side = 500/{sqrt(3) * 0.415} = 695.6 A.
Is safe distance from 400 kV line during the hot line maintenance?
20 m
When a person who is grounded touches it a discharge current flows through the human being. In order to avoid this parking lots are located below the transmission lines the recommended clearance is 17 m for 345 kV and 20 m for 400 kV lines.
Why is voltage rating not in 22kV?
In case of no load, there may be negligible voltage drop and we may get 110% (i.e. Sending + 10% extra which is 11kV) voltage at the receiving point. For this reason, transformer and substation should be rated at full 110% which is 11kV, 22kV and so on.
How much did transformers cost?
147 million USD
Transformers/Budget
How much current do Transmission lines carry?
The largest transmission lines in use have a rating of over 4000 A per circuit, but the average current in a typical circuit is more like 700 A. Distribution lines typically have currents of hundreds of A or less.
What is 33kV transmission line?
33kV to 11kV transformers steps down the the voltage to a safe level, which is then distributed via 11kV feeders to homes and businesses. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.