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.

what is the function of fire alarm system?

5 Answers  

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How do we calculate conductor size?

1 Answers   Hero Honda,

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How to determine the short circuit current for breakers and VCB.

1 Answers   Sabic,

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how and where megger works?

9 Answers   Power Grid,

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if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?

0 Answers   First City,

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What does Bode plot tell you?

0 Answers   Ericsson,

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Diffrectiate between earthing and neutral

6 Answers   TATA,

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Why induction motor is widely used in industry

0 Answers   BARC, Honda,

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how to calculate the ngr capacity(nutral grounding resistor)

2 Answers   Divis Laboratories,

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why the earth pin is thicker than other pins in a plug? If it is for reducing resistance, then why the copper earth wire is not so thick as earth pin of socket?

5 Answers   Omax,

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Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?

0 Answers  

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what is basic difference betmeen normal & flame proof motor??

0 Answers  

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