control wiring purpose,standards, ferrule code standard, interlock, schematic, symbol

1 Answers  

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Why use prefer Dc drive in place of Ac drive for kiln Operatio in Cement Plant?

4 Answers   Orient,

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what is the difference between ac drives and dc drives?

1 Answers  

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We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?

6 Answers  

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WHY WE GENERATE 3 PHASE POWER ONLY AND NOT 4 OR 5 OR 6 PHASE??? PLS REPLY.

7 Answers  

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How transformer neutralshould earthed ? Transformer neutral connected to earth mat in substations, right or wrong ?

4 Answers  

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Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?

0 Answers  

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Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

0 Answers  

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what is the use of permanent magnet generator in exciter

0 Answers   TATA,

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If we increases the %impedance of Transformer then price of Transformer will increases or decreases.

1 Answers   Siemens,

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A resistor,inductor and capacitor are connected in series respectively.Voltage across resistor is 40v,across inductor is 70v,across capacitor is 100v.Then what is the total voltage applied across the elements?

5 Answers  

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what is the difference b/w circuit breakers and relays?

3 Answers  

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