What does VVVF stands for in VVVF drive ? How does it differ from VVF drive?

8 Answers   HAL,

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Hi,, Just I want ask, if the power factor decrease what happen in voltage regulation? Thanks..

1 Answers  

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what is inductive voltage transformer? what is its application and how it differs from capacitive voltage transformer?

1 Answers   NRSC National Remote Sensing Centre,

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a transformer runs by electro-induction principle like all motors.then why dosen't it rotate just like any other motor

2 Answers  

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is it necessarry to charge the battery of ups always??

3 Answers  

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What is AVR in Turbo generator in Thermal power plant?

5 Answers   Thermax,

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in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

0 Answers  

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what is derated current of power cable & what is formule to find derated current?

1 Answers   Thermon,

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Do you know how to joint the H.T and L.T Cables?

23 Answers   KESC, MGVCL, Nokia, Oil Country Tubular, Power Control, SAGT, Siemens, Simco, Vivek Engineers,

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where we sense the fault from the transmission lines?any operation example for distance relay?rear panel connection for this relay?

1 Answers  

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what is Use of Stones/Gravel in electrical Switch Yard??

4 Answers   Sanghi,

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What is Chatoliq Protection ?

1 Answers   Chemanol,

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