electromechanical relay type identification example : type=tjmh t-stants for j- m- h-

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can anibody tel me on what basis the transformer vector groups are determined????

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What is mean by STUB protection?

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if i have one capacitor=80 micro farad which correct the unity power factor,but i want to make capacitor bank who correct the power factor.so,how to split this capacitance value?

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what is the difference between PLC and embedded system

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what is the minimum (Common factor) insulatin resistance of the following a, 4mm sq wire b, cable from 50 mm sq to 800mm sq

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We normally make oil soak pits under Transformers. Oil from soak pit goes to collection pit. We provide granules/pebbles under transformers. My question is weather granules/ pebbles to be filled in soak pit or not? if yes upto what level?

0 Answers   Bhel,

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What will happen if the rotor circuit of a slipring I.M. is kept open & electric supply is given to its stator winding.

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What is In (current rating) shown on the MCCB? Is this full load which can withstand by the circuit breaker

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What are options used for earthing the switchgear.

0 Answers   KSEB, L&T, Siemens,

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calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

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How many types of Transformers are there?

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