Answer Posted / k.prakashchandra
Earlier they were using electromagnetic relays and
meters.Hence for accuracy and workability higher current
was required. Now a days CTs of 1 A secondaries are
used ,as electronic meters and relays have replaced them
Is This Answer Correct ? | 4 Yes | 2 No |
Post New Answer View All Answers
During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.
why we cannot protect 100% winding of an alternator by using differential protection?
i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection
What are the conditions to be satisfied for parallel operation of dc generators?
What is the transfer function?
15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help
what is the maximim current drawn by 1 phase and three phase welding machine
testing of Vector Group – YNaoD II
how make megger test for control cable like 12c x 1.5mm and what it apply voltage and test timing details.
How to do bus bar short circuit calculation for 230KV/11kv, 60 MVA Substation?
How to calculate loses in transformer of 160 KVA ?
What is a single phase autotransformer?
block diagram of 2 ups system connected in hot stand by mode?
Why two phase welding machine is used instead of three phase welding machine.
If more than rated DC voltage appears across trip coil of the breaker, what will happen? e.g. in 110V DC circuit system, if voltage across battery terminal showing 121 V