any earth foult trip the relay but in welding time not trip by earth foult

0 Answers   Power Grid, Siemens,

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What is mean by ideal infinite bus? Why it is required to consider in fault short circuit calculations?

1 Answers  

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FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

0 Answers  

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what is difference between delta-delta,delta-star transformers ???

3 Answers  

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What is the Surge suppresor? Why using in a UDB's and How it works?

0 Answers  

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How neutral voltage for transformer decided? eg 33kv neutral voltage for 200MVA transformer?

1 Answers   MEIL,

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The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

0 Answers  

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whytransformers rating in KVA?

3 Answers   Chettinad,

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Draw transformer phasor diagram.(full load,no load)

0 Answers   PowerTech, Trine,

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Why is earth connected to neutral on transfomer installations

2 Answers   VACC,

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In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

0 Answers  

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A 100KVA SINGLE PHASE TRANSFORMER 10000/200V,50HZ REQUIRES 300V AT HV SIDE TO CIRCULATE FULL LOAD CURRENT WITH LV SHORT CIRCUITED.THE INTAKE IS 1000W.THE % OF REGULATION ON FULL LOAD AT 0.8 PF LAGGING WILL BE HOW MUCH AND THE SECONDARY TERMINAL VOLTAGE ON 0.8 PF LEADING WILL BE

0 Answers   IAS, TATA,

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