Answer / rehan sajid dharme

There are the difference set of curves for which the MCB is programmed to take the initial inrush of current I.e. Starting current of the load

B curve MCB: 2-3 times of full load current

C curve MCB: 5-7 times of full load current

D curve MCB: 10-12 times of full load current

So depending upon the type of load i.e. Resistive or inductive we can make the selection appropriately

if i have 5kw,9A,three phase induction motor,if i want to install it 100 meter away from its feeder,how i will culculate cable size for this load.

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any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

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how to avoid Saturation in C.T?

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i seen a 132kv/11kv transformer,and thier is a sugar factorys 10MW EXPORT PLANT,MY QUESTION IS THAT WHEN THEY EXPORT ELECTRICITY THEY USE THE SAME TRANSFORMER AND THE CONNECT IT TO 132/11KV TRANSFORMERS SECONDARY SIDE CAN ANY ONE EXPLAIN IT.. THE TRANSFORMER IS OF KIRLOSKAR MAKE AND IT HAS TAP CHANGER.

1 Answers  

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what is the meaning of the parameters labeled on the surge arrestor like 150/20 ???

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Which is is best option for 33 kv line incomer.I am Desinging the panel for new projects and i would like to get Your opinion on this Vcb or sf6. Please help me with your replies. Thanks D p singh

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at present how many EHVAC lines are there in India?

8 Answers   HCL, L&T,

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Difference between directional over current and non directional over current ?

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what mean by analog ,digital,numerical meters and relays? say the example?

0 Answers   ABB,

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What is plugging as applied to an induction motor?

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how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....

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Generally the incandescent lamps in bathrooms fuse due to high voltage at night.What is the simple solution of this problem?

4 Answers  

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