hi pot test principal

1 Answers   NTPC,

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what is cathodic protection and why it use in industries?

0 Answers  

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Tell me about Simence PLC 'BLOCK'.How many types and what for.

1 Answers   Gurit,

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what is the meaning of 1250 KVA Trasformer

2 Answers  

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what is surge impedence loading

2 Answers   NHPC,

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WHY THREE PHESE SYSTEM VOLTAGE APPLIED IN 440 VOLT

0 Answers   Infotech, InTech,

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What is the meaning of HT Trivector Meter ?

0 Answers   NIIT, Sodexo,

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What is primary and backup protection?

0 Answers  

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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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Why have to use copper cable for local isolator to motor ?

0 Answers  

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ratings of lightning arrester

0 Answers   Bajaj,

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what is a speed of rotor when we give supply to stator of 50hz and as well as rotor of 60hz of an induction motor?????

0 Answers  

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