Answer / snowwhite10

numerical relay is a microprocessor based relay ...it works
according to the program written using microprocessor.

Answer / naresh nari

numerical relay is a relay which is operated on the bases of numbers.that numbers are coded in the program for the relay operation.hence it is operated depending on the time delay i.e number of cycles per second

why we use REF and Differential Protection in one transformers?my doubt is both protections are operated in internal fault only.why we want to use 2 protections?please clarify.

7 Answers  

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Why there is no provision of breaker in between primary of UAT and generator

1 Answers  

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How does and Earth Fault Relay operates in DG set control panel?

1 Answers   Cummins, University,

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Tesla is the unit of which parameter?

4 Answers   Ecil,

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What is difference between isolator and circuit breaker?

0 Answers  

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how capacitor pass ac voltage practically?with increase frequency and cpacitance?

1 Answers   DELL,

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how to make neutral to ground voltage less than 5v? my house is under the high voltage transmission line so,proper grounding using rod salt n coal doesnt help me..so wat i do as i cant operate my computer ..this high voltage cause great problem to the motherboard i already two times replaced it.in my house voltage is coming near to 25 v between ground and neutral.plz kindly post ur answer to my email id manish77777@gmail.com ..

3 Answers  

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what are factors comes under relay setting (distance relay 7sa52) under OPEN DELTA VTs connection??

0 Answers  

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in our transmisison sub station why we step down firstly 132kv\33kv then 33kv to 11kv. can we direct step down 132kv to 11kv.

2 Answers  

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why we are using2 wave trap in a feeder?

1 Answers  

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what is the use of permanent magnet generator in exciter

0 Answers   TATA,

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what is the difference b/w absolute encoder and incremental encoder?

0 Answers  

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