Answer / prakash chandra tah

once the breaker is closed the anti pumping relay prevent flow of current through the closing coil. this will increase the life of the coil and avoid false operation.

Answer / g.baladhandapani

Anti pumping Relay is used in Circuit Breakers to avoid
closing of CB's immediately after Triping of CB's

Answer / anirban banerjee

Actually anti-pumping relay is designated by K-94.and it
means that the electrical contacts of that are used to close
the dc line to make the closing of circuit breaker not
possible after one closing i.e. prevents sucessive closing
of circuit breaker.the contacts of it may be used to
indicate the closing of breaker

Answer / mohammed yousuf khan

Anti-pumping relay is usually used for ACB operation. Once the supply is given to the closing coil of ACB, the closing coil operates and gives pulse input to the relay. so the relay activates and maintains the ACB in closed position. Continuous supply to the closing coil damages it.
Generally a contactor or auxiliary relay is used as an anti-pumping relay

in three 3.5 core aluminium ug cable. one cable is used for one phase by shrting R,Y and B wires and other 2 cables used for Y and b phases. balace 3 neutral wires are made common and connected to load. suddenly neutral current was more than line current what is the reason behind this?

1 Answers   DLF,

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Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ? 1.Dropout Fuse 2.Striker Fuse 3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)

0 Answers  

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what is the function of AVR in generator? how the generator maintain the frequency while varies the load?

1 Answers  

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what is the diffrence between voltage and current?

11 Answers  

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If two induction motors A and B are identical except that the air-gap motor 'A' is 50 % greater than that of motor 'B', then

2 Answers   Lanco,

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what is 'A' Check & 'B' Check ?

2 Answers  

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what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.

0 Answers  

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How conventional fire alarm system works?

1 Answers  

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What are the protections for HT Motors?

1 Answers   BARC,

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How turns ratio test is done in three phase transformers?

2 Answers  

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What is the difference between EARTH & NEUTRAL?

13 Answers   L&T,

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1. what is the power factor and whatis his losses 2. what is the working procedure of 51RNB AND 87 relay

3 Answers   ABB,

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