how can we charged the battery in DG

2 Answers   MTS,

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what is the difference between ac motor and dc generator

0 Answers   ETA,

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how to work current transformer and potential transformer

1 Answers   Adhunik,

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What are Contactors? How they works and what its highest rating?

0 Answers  

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What will be in Mahagenco Trade Test Exam? I want to know the same.

0 Answers   MahaGenco,

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how do using transformer 30 deg lag or 30 deg lead

1 Answers  

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what will happen if i commission a transformer without connecting the neutral?

2 Answers   L&T, Sail,

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what is at/cm ?

3 Answers  

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Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise carrying amps rating.Please give the solution with a good example.

0 Answers   Modi Builders,

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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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we have 3*1 MW generator one NGR is common for all it will be selected during paralle our problem is two generator ca be paralled but when slecting third one we need to close NGR selection on third one other wise voltage not matching why?

1 Answers  

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Why are use 22 kv 3ph supply ?

1 Answers   IOCL,

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