what is the difference between HV and LV Breakers?

Question Posted / hari

4 Answers
10635 Views
GM General Motors, OEG, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is the difference between HV and LV Breakers? ..

Answer / shri..

1) HV is used for High Voltage lines & LV is used for Low
voltage line.

2) HV breakers have high voltage & low current carry
capacity & LV breakers have low voltage & high current
carru capacity.

3) HV breakers size will be bigger than LV breakers.

4) HV breakers poles gap will be higher than LV.

Is This Answer Correct ?

19 Yes

2 No

what is the difference between HV and LV Breakers? ..

Answer / kannan

* hv (11kv, 3.3kv)breakers mostly used for sf6 or vaccum because breaker inside of conduct points are very near.
* incase use the normal ACB at HT side, induction voltage came so affect the isolation and total system.

Is This Answer Correct ?

0 Yes

0 No

what is the difference between HV and LV Breakers? ..

Answer / simon

H.V=High Voltage (Above 11K.V)
L.V=Low Voltage (Below 11K.V)

Is This Answer Correct ?

1 Yes

4 No

what is the difference between HV and LV Breakers? ..

Answer / rn

Hv- High voltage Breaker which is gas(SF6 gas) insulated
breaker. While close the HV circuit by using breaker, High
spark appear and Very dangerous. so we r using SF6 breaker
We cant rack out, We shoud lock out the Earth switchs in
busbar side and line side. also close the panels, lock out
the panel.

LV breaker - Air circuit Breaker - we can rack out and Tag
out while perfoming the works in L1,L2,L3 lines

Is This Answer Correct ?

0 Yes

6 No

Post New Answer

More Electrical Engineering Interview Questions

Electricty is generated at around 16kV, then step up to 220kV for transmission then steped down to power transformers then DTs and then through the LT n/w it reaches the consumer end. At the consumer end 230V supply is required. So, why is electricity not generated directly at 230V and transmitted?

4 Answers

what is meant by tranformer impedance?

0 Answers Synergy,

why is power supplied in 3 phase only? why not in 2 or 4 phases?

11 Answers

capacitor is load free component but why ampare meter shows the current when the capacitor bank breaker close?

4 Answers OPS,

State the formula for overall efficiency of thermal power station

0 Answers

what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?

0 Answers Toshiba,

State the difference between Three winding transformers and Two winding transformers ? where its used?

8 Answers

which mm cable should be used for 1.hp immersible pump motor for the distance of 330 metres?

0 Answers

electricity bill multiplication factor 487.20xconsumption=total unit in kwh. what is 487.20 ?

1 Answers Spec International,

How Earthing is prevents shock?Explain

4 Answers

DEFINE BREAKING CAPACITY OF BUSBAR & HOW IT IS CALCULATED?

0 Answers

what does mean ct knee voltage and burden

1 Answers

For more Electrical Engineering Interview Questions Click Here