Answer / prakash gokhale

Please check for the mechanical assembly of the VCB. Some
times due to some misalighments breaker can not be closed
mechanical or electricaly even if CC & OC are ok.

Answer / harish kumar

please check the BREAKER FUTURE INTERLOCKS ( LOOPS) MISSING IN THE CIRCUITS.

What is the intent of short circuit studies?

3 Answers  

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How to calculate 5hp 415v 3phase 2800rpm Ac motor full load current with out tourgh

1 Answers   Siemens, Spatel,

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why diesel tank is earthed

1 Answers   ABB, NTPC,

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There are two nos of 33Kv/11Kv 5MVA transformers conecting through HT cable from substation having metering at substation itself.One transformer used at a time another remains stand by.Further 11 nos of 11Kv/440V transformers are attached on it and each transformer is having its own Power factor correction panel.Now one 33/11Kv transformer at no load condition/Stand by condition is having power factor in leading side upto 0.21 and while when another tranformer at same situation have power factor in lagging 0.42. Now one thing is clear that transformer one is having 1.5 Km long 33kv cable due to that PF goes in leading side and another is having only 250 mtr length remains him lagging. Now i want to know that how i can maintain the Power factor at no load/ stand by position though both are behaving in seperate manner.

1 Answers  

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What is the difference between MCCB,ELCB,RCB & MCB

2 Answers   Bhel, HCL, HPL,

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Difference between ELCB and RCCB?

5 Answers  

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what is an S.C.R. and how do they work?

4 Answers   GE,

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What is Surge arrest? How it work?

4 Answers  

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what is induction motor

2 Answers  

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How to improve the power factor from 0.8 to 0.98? Also tell me cost vs benefit analysis.

2 Answers  

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how to calculate the current carrying capacity of a 25 & 16 kva distribution transformer.

2 Answers  

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why we can't use more then 50 hz in india ? Is it possible ?

7 Answers   DVC,

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