how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating

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while selecting transformers for 33 kva feeder normally we ask for 33/433 kv why not 33/415

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what is IP55,IP65

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any body can give me idea or sketch of fuel(Diesel) level controller for genset.

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The height to which the liquid in a tank to be maintained for a certain constant velocity?

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I have a 33 KV sub stn with two mother transformers 33/11 KV of capacity 3150 and 1600 KVA respectively. The total connected load 16809 KVA(11/0.433KV).how i calculate the max current & how i decided the CMD.

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Why are the HV motors are connected in star connection?

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Why electricity is generated and transmitted at the values of multiples of 11?

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lightning arrester rating selection procedure: (line to line voltage(kV)/(squ.root of 3))*squ.root of 2. now the question is, IS this above formula correct for both STAR and DELTA connected system???

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What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?

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tell me any book for current n potential trasformer with full knowledge ?

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How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

1 Answers   Siemens,

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