Answer Posted / yasuteru

because domestic appliances work on low voltages

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

904

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we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?

1071

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ANY ONE TELL ME ABOUT generator synchronization panel panel to synchronise 3 gen of 250kva both automatic and manual. 2 gen output vol 415 3ph, 1 gen output vol 400 3ph SEND THE DETAILS DIAGRAM ON THIS EMAIL ADDRESS ayazleo@hotmail.com as soon as possilble best ragrds electrical engineer ayaz mahmood SAUDI TECH

3710

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If i am running of spindle at 2000rpm ,but How to spindle stop at the second I am resetting the machine in CNC machines

1230

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How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

1575

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What is the one main difference between ups & inverter ? And electrical engineering & electronics engineering ?

666

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why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.

1527

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what is the current density of copper & alluminium.

1510

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how does WTI work ?

1535

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In case of generator when we consume more power produces by it why load on generator increase and starts sound more. and how it is adjusted..

1440

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i have to install a HT panel, what components, I have to use in this and what will the diagram of that diagram,please tell me each and everything.

1349

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Lt motor sfu flashing reasons?

1307

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How earthing/grounding done in aeroplanes and ships.

3125

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Write the programming software name for LG, SIEMENS,Messung,AB

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What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..

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