Q:What is the difference between Isolator and Circuit Breaker?
A:Isolator
is a off load device which is used for isolating the downstream
circuits from upstream circuits for the reason of any maintenance on
downstream circuits. it is manually operated and does not contain any
solenoid unlike circuit breaker. it should not be operated while it is
having load. first the load on it must be made zero and then it can
safely operated. its specification only rated current is given.But
circuit breaker is onload automatic device used for breaking the circuit
in case of abnormal conditions like short circuit, overload etc., it is
having three specification 1 is rated current and 2 is short circuit
breaking capacity and 3 is instantaneous tripping current.
Q:what is boucholz relay and the significance of it in to the transformer?
A:Boucholz
relay is a device which is used for the protection of transformer from
its internal faults, it is a gas based relay. whenever any internal
fault occurs in a transformer, the boucholz relay at once gives a horn
for some time, if the transformer is isolated from the circuit then it
stop its sound itself other wise it trips the circuit by its own
tripping mechanism.
Q:What is SF6 Circuit Breaker?
A:SF6 is Sulpher hexa Flouride gas.. if this gas is used as arc quenching medium in a Circuitbreaker means SF6 CB.
Q:what is ferrantic effect?
A:Output voltage is greater than the input voltage or receiving end voltage is greater than the sending end voltage.
Q: what is meant by insulation voltage in cables? explain it?
A:It
is the property of a cable by virtue of it can withstand the applied
voltage without rupturing it is known as insulation level of the cable.
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