Answer / j.kesavan

vaccum circuit breaker ,vaccum is arc qunching media, to
arrest the arc in breaker closing time.

Answer / shabharish

This CB is normally used for high current carrying
feeders ,Here vaccum is the media to quench arc during
making or breaking of contacts

Answer / sunil kaushik

as the name indicated that arc is extingished in arc during making or breaking of contact. the vaccume is about of (10)-8 torr.

Answer / er. r.n.soni

Vaccum means "no media". As such arc could be generated
while opening and closing of electical circuit

in ac system the current wave form becomes zero for every half cycle then how can we get continuous supply can any one answer to this plsss

2 Answers  

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what is difference between line differential and transformer differential?

0 Answers   L&T,

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0.5,1,1.5,2.5,4.0.6.0,10,16 square mm electrical wires how much take maximum current in 50htz

0 Answers   SoftLogic,

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the power consumption of perminant magnet moving coil?

1 Answers  

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Why does the phase voltage of two healthy phases become equal to the line voltage in case of an ungrounded neutral 3 phase star connected sytem when a single line to ground fault occurs ?

2 Answers  

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what is the function of buchhos rely in transformer

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1 Answers  

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0 Answers   Bernhard Schulte Shipmanagement,

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What is SF6 Circuit Breaker?

2 Answers   Amdocs,

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We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power through this transformer. When we export power, the PF will be depend on GRID PF & when we import power the PF will be depend on our load PF. but the problem is that,when neither we export nor import but our 33KV vCB is in close position,our meter read the power factor 0.14 to 0.25 at that moment. So how can be we improve the power factor at that moment.

3 Answers  

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If the field winding of the dc shunt motor is removed then what will happen to the motor ? will it turn or not

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what is subtransient , transient and steady stateac components

0 Answers  

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