how can 3phase motor speed can be controlled without vvf drive?

1 Answers  

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1)What are the proccedure of initial charge of 100AH lead Acid battery bank 2)whether discharge test is reqd ? if it is rqd why, how 3)what are the discharge critieria (volt/cell or sp.gravity/cell

1 Answers  

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active elements are those which are capable of

2 Answers  

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what is load flow?

2 Answers  

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what are the causes for strip heater failure ?

1 Answers  

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What are the basic & Majour problems in UPS ?

0 Answers   Roto Power, RotoPower,

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pls define kvarh

2 Answers  

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Transformer/insulating oil tester(BDV tester)

1 Answers  

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Ratings of power transformer,Distribution transformer.

0 Answers  

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why the pressure coil is not present in the three phase wattmeter?

1 Answers  

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We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

0 Answers  

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Which type of gas used in cylinder (VCB)?????

15 Answers   ICSA,

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