Answer / balakrishnan

ACB: air circuit breaker./ mostly used in LT side and arc
quenching by air.

VCBL Vacuum circuit breaker. HT application. arc quenched
by vacuum.

Answer / n karthikeyan

ACB means "AIR CIRCUIT BREAKER" it is a Electrical power
supply protection equipment when fault occur in the system.
It is used in the Low Voltage application. The power supply
mechanical contacts are kept in the atmospheric air at the
time of fault, the breaker will trip the generated electric
arc ia quenched by the air.

VCB means " VACCUM CIRCUIT BREAKER " it is also same
equipment but used in the High Voltage application ( 11kv -
33kv ), here the power supply mechanical contacts are kept
in the vaccum sealed bottle, the vaccum will quench the arc
at the time faulty trip. The electric arc generation is
high when comparing with the ACB

Answer / annu

circuit bkrs. names related with arc quenching medium which
is used in breaker. mostly air ckt. bkr used for LT system
and arc quenching mwdium is only air but vaccume ckt. bkr.
used for HT system and arc quenching medium is vaccume
which is created in separate vaccume bottles where contacts
make and break .

Answer / pawan ahlawat

ABB MOSTLY USED IN LT SIDE BUT VCB FOR HT SIDE

Answer / ram khapekar

ACB: As name it is Air circuit breaker, and it is used in
LV side of transmission, air as a arc quenching medium.
VCB: vaccume circuit breaker it used in HT side of
transmission there is not any medium for arc quenching so
it is vaccume circuit breaker

Answer / gomez jerald

An ACB Is constructed for a particular contact rating at medium voltage .Technical explanation the contacts energize and d energize the arcing air medium during the process is quenched in an open chamber.

VCB is constructed especially for higher rating voltage and the technical term .the arcing during energizing and d energizing is quenched in closed chamber at very low pressure.

Answer / sandesh gudekar

tungstan has high melting point than nichrome.that's why tungstan is used as filament of incandescent lamp

Answer / sakthi

Acb is a air circuit breaker used for Lt side arc is air qencing medium. Vcb is a vacum circuit breaker used for ht side vacum is quvancing medium

Answer / jayprakash gupta

Vcb (vacuum circuit breaker) use of ht site
Acb (Air circuit breaker) use of lt site

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