Answer / r.k. gupta

We are using IGBT & SCR in UPS system because these are high frequency switching with high current devices. which are used in UPS for inverting the supply from DC to Ac during battery backup of UPS. 

How to operate a ac chilar plant?

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How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?

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How can determine cable size with respect to cable length and area in mm2

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how to test YNyn0 vector group in transformer?

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What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

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We have got the HT connection of 1000 KVA in which we have installed a seprate APFC panel at the PCC end & seprate KWH meter is installed. My question is that does the KWH reading shown in the meter is a part of the Consumption ???? ( approx 500 units is shown)

1 Answers  

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What is C.T, why it is used and what care should be taken for that while connecting?

20 Answers   Bhushan Power Steel,

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Need help. 3 phase system. Neutral line arced and melted upon connection of connector with 3 phase power. Why would that happen?

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What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.

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WHAT IS THE FULL FORM OF ONAN ( TYPE OF COLLING IN TRANSFORMER)

7 Answers  

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How to take Vector group test of Transformer?

16 Answers   Sunflag Steel, Zuari Cements,

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Is 2000kva stabilizer suitable for 1h.p split air conditional

2 Answers  

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