When do you use a VFD motor?

3 Answers  

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WHAT IS BASICS TO SELECTION OF 11 kv Trasformer, send any calculation sheet for selection of transformer

3 Answers   NBCC,

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How many 2 ton window A/c can runs on a 125 KVA generator?

2 Answers  

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what are inherent currents?

0 Answers   Sail,

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Could Please Explain briefly. Why used stabilizing resistance series with High impedance bus differential protection relay.

0 Answers   NCC,

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Do Phase angle measurement have any application in freq/harmonics measurement? If so how?

0 Answers  

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tan delta test of current transformer.

3 Answers   NTPC,

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Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

0 Answers  

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How to assume answer to electrical questions

0 Answers  

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How to calculat the size of copper& aluminium wire ?

5 Answers   Hindalco, IOCL,

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What are the protections to be used for Generator?

5 Answers  

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We have a 12MW power plant & we inject 5-6MW power to Orissa GRID. For this we have a 33KV/11KV switch yard having 12.5MVA power transformer. Some times we draw power during emergency. It is observed that during Export or Import for load less than 500Kw the power factor is decreasing to 0.3 . This is happening only during export or import. During island condition TG power factor OK.Our capacitor bank is provided with our Power plant auxilliary load. Please suggest how I can we improve our power factor during low load (GRID).

3 Answers  

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