What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?

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Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?

1 Answers  

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how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt

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Where all & Why resistance grounding is required?

1 Answers  

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A distribution transformer giving afrequency of 200HZ, where it is rated for 50HZ. when it will occure?

2 Answers  

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why transmission voltages are in multiple of 11kv?

10 Answers  

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what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers  

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Can an inverter be used as a converter? How?

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Calculation for the adequacy of 380 KVA neutral earth flat size

1 Answers   Electrical,

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how to check avr of dg set of 125kva

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How many types of Differential protection are there? and what the special arrangement are made at the time of charging of a transformer on the Differential protection?

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why we usually call 415 volts instead of 440 volts

3 Answers   S Tech,

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