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.

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.

Answer / simon

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

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

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