How to calculate multiplying factor of dc energy meter

0 Answers  

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How to configure the drives in PLC, through Profibus commnication. And to how to address it?

0 Answers  

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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

0 Answers   Premier,

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Difference between online and offline UPS?

11 Answers  

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what is the differents and advantages of Electro magnetics relay and static relay ? what is the numerical relay ? advatages?......

7 Answers   CAT, L&T, TCS,

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Hod do u calculate cable size for underground laying and the factors effecting/influencing it??

4 Answers   Kuwait Oil Company,

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Why we use duplex coil and hook switch in telephone system?

0 Answers  

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Where is 2 phase supply used commercially?

3 Answers   NTPC,

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What is A.C Resistance for Earthing ?

2 Answers  

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a motor's measured current is 45amp,whereas the rated current is 38 amps but still it is running ,how?

5 Answers  

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If the secondary winding will be open in current transformer, how to damage the insulators

2 Answers   TPDDL,

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why star point of motor shall not be grounded?

8 Answers  

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