How Arc Produced in Circuit Breaker When the contacts of the circuit breaker open.

1 Answers  

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dear all, How do i increase UPS (1000VA)backup time ? i have connected 2 12v wold you please 120 aH battery externally. ups charge the lead acid battery only 12.7 volt. backup time only 10.00 minuts and gose off. can any one of you help me?

1 Answers   Technomax, ups,

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How can we find out earth leakage,(shock)in side the house?.. (with out ELCB)

3 Answers  

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Supose we have one 220v A.C fan.if we provide 220v D.C what will be happen?

13 Answers  

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What is meant by directional power and reverse power relay ?

1 Answers   HAL,

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What is potientiometer.What is the use of it.

1 Answers  

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on whcih cycle does gas turbine works?

2 Answers  

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What is rated value? is it phase values or line values?

1 Answers  

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acb(AIR CIRCUIT BREAKER)NOT CHARGING AUTO

0 Answers  

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what will happen when reverse reactive power occurs in alternators?

3 Answers   Reliance,

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what is the difference between ac and dc hipo test of cable?

2 Answers  

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what are trouble functions of transformer?ex. prv trip,oltc,oti,wti.explain detail.

1 Answers  

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