Answer / virendra pandya

It is REM543 and higher I/O variant is REM545. This
numerical protection relay is used for protection of
rotating electrical machines either induction motor or
synchronous machine (Both motor and generator). REM54x is
freely programmable relay and functions and logic can be
programmed using CAP505 tool.

SPAJ is a series of SPACOM family relay working on current
inputs and communicating on SPA protocol. This family of
relays is designed for various feeder prortection
applications and not for motors

How can we prevent the (Home)inverter supply flow to the main supply line?

1 Answers   L&T,

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When should I use earth leakage circuit breaker for incomer and when should I use it for each feeder seperately?

1 Answers  

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what is the calculation formula for motor starting torque,running torque, running torque.

0 Answers  

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In case of delta/delta transformer if the one phase is blown out then what will be secondary line voltage ?

4 Answers  

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What is difference is of VSD,VFD,VSDS, are they the same as the direct current to control dc using above mention

0 Answers  

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11 KV distribution system where neutral is produced ?

4 Answers   ciss, TATA, Tata Motors,

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How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

0 Answers   DRJ ARDE,

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I have raw material for making Compact-Choke for flourscent lamp of 40 Watts. We are suppose to get 0.4 amps output at end. but we are getting 0.42 or 0.44 amps and above. We have done many testings in different but nothing worked out. Please suggest me how to get the correct output. We are using 1. core winding of 700 windings of aluminium 2. E-shape iron fillings and I-shape iron fillings to surround the winding.

6 Answers  

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what is the transformer

6 Answers  

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What is LT? And specify the range of voltage?

10 Answers   HSL,

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How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula?

2 Answers  

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Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

0 Answers   Piramal Healthcare,

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