Answer / rakesh verma

Soft starter is like a auto transformer starter of 3 phase
induction motor which protects the motor from jurk .

Answer / rafi

soft starters are the AC drives which limits the starting
current as like starters,
but the diffrence in soft starter is, it is controlled by
SCR, by that we will limit the starting voltage to ur need.

Answer / subhash tp

i have no accurate answer for this question.

There are two nos of 33Kv/11Kv 5MVA transformers conecting through HT cable from substation having metering at substation itself.One transformer used at a time another remains stand by.Further 11 nos of 11Kv/440V transformers are attached on it and each transformer is having its own Power factor correction panel.Now one 33/11Kv transformer at no load condition/Stand by condition is having power factor in leading side upto 0.21 and while when another tranformer at same situation have power factor in lagging 0.42. Now one thing is clear that transformer one is having 1.5 Km long 33kv cable due to that PF goes in leading side and another is having only 250 mtr length remains him lagging. Now i want to know that how i can maintain the Power factor at no load/ stand by position though both are behaving in seperate manner.

1 Answers  

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Explain the term parallel path in dc machin ?

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if field winding of synchronous generator are shorted on each other will it start or burn or run for short time like induction motor

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what is the effect of power factor to (a) voltage (b) transformers (c) generators (d)transmission lines

4 Answers  

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While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens

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what is slip resistance? how much its value in 110 kw motor? why voltage is varied in vvvf drive ?

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can u please tell me how VFD(variable frequency) drive is used as a energy saver....?

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How we calculate the spacing between the conductors in 11,33KV lines?

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What are types of losses in the Transmisson Lines ?

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If we have two nodes A and B and Vab is the potential difference between these nodes then which node is called reference node a.node A b.node B c. Ground node

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Why only 1 CVT in Y-phase is used for synchronization in 3 phase power system?

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HOW TO MEASSURED THE AMPS RATING FOR SUITABLE CABLE SIZE?

4 Answers  

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