In 400KV Switchyard, we have used Circuit Breaker With PIR, what is the significance of PIR & why they'r used?

2 Answers  

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Explain how you intend to work under pressure to meet up with deadline target?

0 Answers  

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what is the diff. btwn. electronic regulator and ordinary rheostat regulator for fans?

3 Answers  

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Why short circuit calculation is not required in LT cable sizing and requiredin HT cable sizing only

2 Answers   Chemtex,

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power 148kw i need exat cable size in 148 kw in 3phase what size of cable can i used.

3 Answers  

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When in a large power system if the demand of power is larger than the generated power the frequency of the power system drops.(assume the rated frequency is 50Hz and now it is 49Hz) So does this mean the demand is totally supplied with a lower value of generated power in a lower frequency?

1 Answers  

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why do fans generally rotate in anti clock wise direction??

2 Answers   BMS, FIS, IBM,

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In an LT pole, the line voltage is 415V. How is it converted to 230V into the house via the service cable?

10 Answers  

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TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

0 Answers   Bhel, NTPC,

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how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

0 Answers   SISL,

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prove that power consumed in 3 phase delta system is 3 times as compared to 3 phase star system

0 Answers  

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WHY BREAKER ARE USED IN SUBSTATIONS?

0 Answers   Fedco,

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