what is the difference between HV and LV Breakers?

Question Posted / hari

4 Answers
12491 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

what happen if the supply is given to the stator of the 3phase induction motor with out assembling the rotor ?

0 Answers

why we need the starters for motors

1 Answers L&T,

how to prepare the technical test

0 Answers RRB,

why ELCB can't work if N input of ELCB do not connect to ground?

5 Answers

We have one Energy meter for Measuring the voltage,current,power,energy(KWH,KVARH,KVAH) & power factor.The problem is that the meter does not show whether the PF is lagging or leading.So i want to know that is there any way or calculation to find out that whether the PF sign (lagging or leading) depending upon the above mentioned parameters?

4 Answers

What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load

0 Answers

what are the safety in transformer,diesel generator,ups, chiller plant,h.t. , L.t. , sewage treatment plant(stp),water treatment plant(wtp), fire. plz ans. me in detail if you know any of the mention above. i urgently need

2 Answers Claris Lifesciences, EFS,

How many companies are manufacturing 33 KV HT Breaker

1 Answers

What is bode plot?

0 Answers

what is the difference between main meter CT and check meter CT?and what is the difference between main meter PT and check meter PT?

2 Answers Tesco,

Why voltge arev transformed in to 132KV/66/KV/33KV like that

5 Answers HAL,

1.What is wind span ,wight span and normal span, and what is the difference for 132kv transmission .

1 Answers PKR,

For more Electrical Engineering Interview Questions Click Here