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

Meggering minimum acceptable Ohms for insulation resistance.

1 Answers   TATA, Wood Group,

How to increase solar cell efficiency ?

1 Answers  

What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

0 Answers  

some times voltage does not built in small generators why ?

2 Answers  

800A 22KV TP OCB. explain

1 Answers  

Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

0 Answers   KSEB, Siemens, L&T,

why auto transformer connected in star?

1 Answers  

how cables go in and come out for distribution from the feeder pillar box?

0 Answers   CESC,

What is complex power?

1 Answers   DRDO,

which is the best book of electrical objective for placement

1 Answers  

What is cable gland,why does use for?

5 Answers   ABB,

any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

0 Answers