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

for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

0 Answers  

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what types of electrical & mechanical test conducted in switchyard?

0 Answers  

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state the working principle of incondenscent tube?

0 Answers  

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Please mention any books for electrical design load calculation for industrial,commercial(to select cable,breaker,bus bar,stator,)

1 Answers   C&S,

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Earth leakage relay basic knowledge principle

0 Answers   Radiant,

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In scott connected transformer number of turns in the primary winding of teaser transformer is % of number of primary turns of main transformer A 86.6 B 57.7 C 14.4 D 33.3

1 Answers  

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WHICH SUPPLY IS BETTER FOR 4 MW LOAD. 1)TO TAKE NEARER AVAILABLE 11 KV SUPPLY OR 2)TO TAKE 33 KV SUPPLY WHICH IS AVAILABLE AT 10 KM DISTANCE BY INVESTING NEARLY 50-60 LACKHS

1 Answers  

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When dc supply is fed to rotor of the alternator how it work?

0 Answers  

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what is automatic voltage regulator and it is used?

28 Answers   ACME, TCS,

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types of transformer ?

3 Answers   CG, JLL,

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what is load cell? whrere its used ? how to measured?

2 Answers   Essar,

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How we can calculate what type of supply we need for an example sometimes we take 11 KV and sometime 33KV from EB ?

4 Answers  

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