In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?
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Pl.brief me about Electrical power distribution system from Main generating station to Industry.What is the use of in between station.
what is relay what is protection & contact multiplying relays where it is used function in brief
What is TR of AC?
Which type of questions well asked. ?
what are the various types of earthing? plz give brief detail of all. also post pictures if u have.
22 Answers Aster Teleservices, Era Infra Engineering, Micron Electricals,
what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?
A group of machines (wind turbines) connected with 33KV feeder and each machines are having individual VCB. The 33KV feeder connected with 110KV/33KV substation. The 33KV feeder tripped by over current at Substation and fault recorded at Substation as OC-R&Y phase. Same time the group of machines VCB tripped by over voltage, the fault recorded voltage was above 66KV by numerical Under/Over voltage relay. While grid drop time, this much of voltage hike is possible?
At the time of 1st charging of transformer, there were huge inrush current, so why at that diffrential relay are not operated? Why?
if the rotor of induction motor is purely inductive then what is the electromagnatic torque.........
If the 11 KV supply is fail. what will happened with it's breaker if it is supplay to the 11KV motor?
how is reactive power controlled on the transmission system
why name plate detail HP/KW rating of a motor is different from measured value HP/KW using formula?
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