22kV HT incoming should be 3 phase or 4 phase? why is it not 4 phase?

1 Answers  

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6.6Kv feeder feeding tow step down transformers-415V-,what the possible consideration for parrellel operation?

1 Answers  

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what is the significance of tan delta testing?explain the theory?

7 Answers  

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when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

0 Answers   ETA,

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How many earthings are required for commissioning the Transformer?

14 Answers   Dalmia Group, HSL,

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HOW TO WORK A VFD?SAY SIMPLE METHOD

1 Answers   GE,

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1.What is isolators and bus bars?give answer in details

2 Answers  

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how the ac voltage are selected like 220v,415v,750v,1000v& 1.KV,6.6KV,11KV,33KV,66KV,132KV,220KV & why these are selected like these orders

2 Answers   Jindal, JSW,

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how do you test tachos and servos

0 Answers  

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Why a transformer is rated in kVA and not in kW??

9 Answers  

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- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

0 Answers  

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how to calculate no. of earthing pits and their diamensions? no. of lightning arrester rods which are required to protect a building of 35 mtr and we calculate?

5 Answers   Dharampal Premchand Limited, FlowMore, Hindustan Zinc, Ispat, Maheshwary Ispat, NDDB, Siemens,

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