Answer / barkha thakur

dirrential relay is a type of directional relay
it operates when there is a difference in the primary &
secondary current

Answer / biju mathew

Differential relay is a relay which operates when there is
a difference between two currents. For example incoming and
outgoing currents in a circuit.

Answer / sanjayjssate

Diffrential relay is used in transformer winding protection, it calculates the current of secondary side with transformer turn ration, if the current on other side is very slightly diffrent it does not trip but when iy crosses a fixed percent of defined protection it trips the circuit.

Sir,I have finished my B.E in the Stream of EEE.How Can I get C license for Electrical???Please Tell me the way...My mail ID is praba1003105@gmail.com Cell:7402474123

1 Answers  

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every motors written in name plate IP 55 what is this?

2 Answers  

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why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.

4 Answers  

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how can we make cable shedule for controll wiring ? which details must be required for it.?

0 Answers   L&T,

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What are the consequences in using existing step up transformer (primary 6.6kv/175A, secondary 480v/2405A) for step down transformer to have a 6.6kv output?

1 Answers  

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11kv has three live wires how much voltage is in its single wire(leaving the other two wires)

13 Answers   Power Grid,

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What is the meaning of dedicated earthing?

0 Answers   Dabur,

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What are the various kind of cables used for transmission?

0 Answers  

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how to select a air/vacuum circuit breaker.is there any thumb rule???

1 Answers  

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In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.

0 Answers   HAL,

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how does the thyistor work in dc drive?

0 Answers  

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Load 380kva eb 415v,load amps 350.Same load dg 415v,load amps 420 what reason ?

1 Answers   AVT Natural Products,

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