Answer Posted / k.prakashchandra

I think alf could be Alf, meaning maximum 'line fault
current' (A lf )

wheather the size of windings in motor and generator are the same

1598

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In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

470

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what is relay what is protection & contact multiplying relays where it is used function in brief

791

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WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?

1587

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What is the use of bundle conductors?

728

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what is meant by impulse voltage?

1646

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If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

712

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How is the gain affected by the introduction of feedback in a control system.

831

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What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?

1702

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what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

1721

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what is proper capacitor placement? How to evaluate capacitor size?

1728

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how to increase senstivity of ct

2019

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DERIVE AN EXPREION FOR MAXIMUM POER TRANSMISSION, WHAT ARE ITS APPLICATIONS.

1718

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how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours

1910

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in dc suppy frequency is zero why? if dc frequency is zero how to exist dc transients and ac transients

1647

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