I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR

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why the transformer neutral give to the earth ?

2 Answers   Jindal, JLL,

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how to calculate overall efficiency of diesel generator set? give us a formula with an example.

2 Answers  

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what is servo motor principle? difference between induction motor & servo motor?

1 Answers  

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why the tapping of transformer on ht side??????

12 Answers   CTS, OPTCL, Visa Steel,

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Why P.f. of the system decreases when it is connectect across induction motor? & how to maintain the p.f. of system to unity.?

6 Answers   Reliance,

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For a load of 40HP induction motor.what will be size of Armoured copper cable require to connect the motor to starter in Star-Delta?

1 Answers   CG,

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number of I/O devices in siemense plc

0 Answers   EB,

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Could anyone clarify my wondering. What is the difference between knee point voltage and saturation voltage of the CT. Is their any formula to calculate these values?

2 Answers  

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What is the role of power pack in substation protection system?

0 Answers   Facor,

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how can we phase identification in a distribution line,how we recognise that which phase is coming for a house hold connection.help me............

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how pt is using

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