What do you mean by isolators and circuit breakers?

6 Answers   Bhushan Power Steel,

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how do i commission a distribution transformer knowing all its ratings and transformation ratios?d

1 Answers  

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If the 11 KV supply is fail. what will happened with it's breaker if it is supplay to the 11KV motor?

3 Answers  

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How to identify Motor leads in their order coming out from winding without tag (U1, V1, W1 & U2, V2, W2)?

6 Answers   ABB,

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Why relay connected R phase and B phase.?

1 Answers  

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How do performance buccholz relay testing in power transformer

1 Answers  

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what is the difference between mho characteristics and quadrilateral chara in distance protection

1 Answers   Essar,

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A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

1 Answers  

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How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

1 Answers  

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Why efficiency of generator is higher than motor at a particular load?

0 Answers  

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Why the suply frequency in INDIA is 50HZ

2 Answers   HCL,

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how can we minimize the off load losses of a distribution transformer which is required to be energized 24x7 ?? capacity of the T/F is 1250 KVA and off load losses are around 2.0 KW.. can we use capacitor bank at the secondary of such a T/F to overcome off load losses? please elaborate briefly...thanks

2 Answers  

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