Answer / vengatesh

1.Circuit Breaker
2.Protection relays
3.Fuse(over current protection)
4.Earthing(For drawn the Fault current which is higher than normal voltage)
5.Control panel body earthing(To prevent the body shorts)

Answer / rajendran.m

Earthing system.

Answer / rcq

1. Reverse power relay
2. Reverse kvar relay
3. Overcurrent and eatht fault relay
4. Trip/Lockout relay
5. Differential protection relay

Answer / khajamian

MCB,s MCCB,S .....miniature circuit breaker and mould case
circuit breaker....and various relays..... [protective
relay,current relay, thermal relay..over load relay.. ]etc

Answer / sridhar

(i) SPD(Surge Protection Devives)
(ii) Prevent the Oxiditation by painting
(iii)To choose the Proper Enclosure system

Answer / sb

CT,PT & CB

lamination figures

0 Answers  

any one can explain the stages of a knee point which is taken during ct magnetising curve.

0 Answers   Tata Steel Limited,

Why voltmeter is not connected in seris & ammeter connected in parallel ?

5 Answers  

is KVAR (not reverse power) relay necessary to protect from excitor field failure on a brushless, synchroneus generator? Some people with previos experince tell me no but the manufacturers tell me it is designed for that purpose. Is it that it is only necessary for brushless generators and not the older style with the slip rings and brushes?

1 Answers  

previous year paper of ntpc bhel for degree in electrical enng

0 Answers  

how DC motor operating in detail .pls any one guide me .iam not clear idea about that .thank u

2 Answers  

why the supply power frequency is 50hz in india? where as it is 60hz in US?

4 Answers  

what will happen if the bus PT fuses are accidently removed from the circuit in 6.6kV feeder?

1 Answers  

For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?

0 Answers   GEPL,

What is metering cubical? What is the use?

2 Answers   HSL,

Can u tell me design of switch yard

0 Answers   NTPC,

Metal covered multiconductor cables shall employ a marker tape located within the cable running for its complete length in lieu of cable surface marking. Is it true or false?

0 Answers