why anti pumping relay is not given to tripping coil of the
breaker? why only to closing coil?
Answer Posted / karna
Actually in Breakers Closing coil and Trip coil are
operated on Pulse command (i.e just initaion is enough,
continous supply not required). Anitpuming Means once the
breaker is colsed ,again if anyone ( Auto Command, Through
TNC switch ) can close it will not close because in closing
circuit Antipuming NC will be in series, Once the breaker
close means antipuming will activate unitll trip command
given by us.
Tripping coil plays major role in Circuit brakers, because
if any faults ( i.e O/L, E/L, short Circuit etc..)occur
breakers has to tirp. For trip we can do manaully at any
time.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
send me any model test paper of clerical post of state bank of india.......
What range of speed can you get with the armature control method of speed control of d.c. Shunt motor?
How much voltage we need to apply in 33kv cable during hipot test of cable
Let me know that how i calculate the alternator sub tranciant reactance and tranciant reactance.
What is meant by Load Encroachment in OHL Feeder Protection?
what about GD square and its important for motor design?
State superposition theorem?
what are factors to be consider to design a HT & LT motor?
what is mean by descripiency relay? & wht is its ansi code?
power transmission pole used one support , that only for support or earthing
can we use engine degreaser for electrical motors?
he compression ratio for a petrol engine generally lies between
what is the mechanical safety of DG ?
What is the armature mmf in a D.C machine?
A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.