what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB

0 Answers  

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why do we use magnetic contactors ?circuit breakers are not enough?

5 Answers  

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Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?

2 Answers  

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difference b/w semiconductor and insulator

5 Answers  

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How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE? PROCEDURE WITH DETAILS?

0 Answers  

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what is the reason for connecting hvdc monopolar line with negative conductors

0 Answers  

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how snubber circuit works to protect switching devices?

2 Answers   Electrotherm,

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What will be the output of t/f supplied with DC sourse?

2 Answers  

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what is the power ratio between power in star and delta circuit?

3 Answers  

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Whether amorphous core transformer is commercialized or not:Name of company making amorphous core transformer and what are different rating?

0 Answers   DAE,

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how power is generated,and transmitted to our home..pls explain briefly in simple words.

0 Answers   HAL, Subros,

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I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems

5 Answers  

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