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AVR acts has a stabailizer

1.what is the reason for transformer and lightning arrester blast in 33kv system

0 Answers   ABB,

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If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

0 Answers  

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Can any body tell me about partial discharge test, and why it is necessary and its procedure

1 Answers  

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Is earthing done for AC or DC or both?

6 Answers  

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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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lenz law application and define

0 Answers  

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why vector group used in transformer and what effective in output

1 Answers  

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What are the protections used in a HT breaker to protect the HT motors.

2 Answers  

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how the magnetic flux is said to be rotating & alternating?

4 Answers  

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When geneartor is running in poor lagging side power factor its excitation current increases then it is running in improved lagging side.Kindly tell me when gen is running in leading side what will happen

3 Answers  

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11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??

0 Answers  

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what is the difference between OSR and BUCHHOLZ relay of transformer?

1 Answers   Bhushan Power Steel,

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