How can calculate thermal overload in relay?

1 Answers   ABB,

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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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what is conductor constant of raccun conductor

0 Answers   CSPDCL-Chhattisgarh State Power Distribution Company Limited,

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the circuit having same properties in either direction is known as.......

2 Answers  

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How are harmonics produced in AC machines?

4 Answers  

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dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.

0 Answers  

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how to estimate the breaker capacity of breaker,please give the one example( 6.6 kv breaker,800a)?????

2 Answers   Divis Laboratories,

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what is the difference between NC & CNC machine.what is the difference between equipment & machine tool

2 Answers  

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why the the phase transformer's nuetral has been grounded

2 Answers  

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what is class of SPD and dittels of all class ?

0 Answers  

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two generator runnig with parallel but only one NGR on And one off Why

1 Answers  

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can any one help me? 1.what is corona extinction voltage&corona inception volatage 2.what is mean by CFVV?

1 Answers   KSEB,

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