Actually, the thing is vacuum has high arc quenching property compare to air because in VCB, the die electric strengths equal to 8 times of air. That y always vacuum used as in HT breaker and air used as in LT.
Subscribe to:
Post Comments (Atom)
-
Transmission substation transmission substation connects two or more transmission lines Distribution substation distributi... -
Over-current / Earth fault relays are the basic protection relays. Used for protection of transformers and feeders from over current and ...
-
Electric Current Electric current definition and calculations. Electric current definition Electric current calculatio...
-
Advance - EFFR wire has enhanced flexibility* & higher bending capacity (15% to 20% more bending radius than other wires) comes with uni... -
Series motor cannot be started without load because of high starting torque. Series motor is used in Trains, Crane, etc.
-
7.1Transactor 7.2Hedgehog 7.3Variometer and variocoupler 7.4Rotary transformer 7.5Variable differential transformer 7.6Resolver and synchro...
-
Joule’s Law of Electric Heating The amount of work required to maintain a current of I amperes through a resistance of R ohm for t second ... -
substation which is used for all voltage levels between 55 KV to 765 KV is called outdoor substation. ... The outdoor substations are mainly...
-
synchronous machines have the capability to work on different power factor (or say different imaginary POW varying the field emf. Hence sy...
-
Pressure relief devices are used to provide a means of venting excess pressure which could rupture a boiler or pressure vessel. A pressu...
No comments:
Post a Comment