What is the difference between online ups and offline ups?

44 Answers   Electrical Tech, GMR, Gravity India, HCL, Indus Towers, NIT, Pyramid, Techno Electric and Engineering, UBS,

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if a 3 phase induction stator has charactristic plate and have on winding inside.with the calculation of plate or dimenssion of core how one can desinge rewinding drawing.

0 Answers  

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what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

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what is the cause of voltage dipp or swell in the transmission lines?

0 Answers  

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Can we use shunt trip coil instead of trip coil with protection relay for protection?

0 Answers  

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what are the problems faiced at dg comissiong

0 Answers   Aster Teleservices,

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What do we use in Motor core laminations..???CRGO or CRNGO..and why..????

1 Answers  

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write a program that prints prime numbers from 1-20 in digonal form

0 Answers  

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Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

0 Answers  

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CAN CU XLPE/PVC CABLE BE USED INPLACE OF LOW NOISE SCREENED CABLE? KINDLY GIVE REASONS

0 Answers  

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howmany insolaters needed in 66kv line

9 Answers   Essar, L&T,

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we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the primary current will be 52.48A. So why the HT breaker(SF6 ABB) is rated of 1250Amps ?

2 Answers  

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