what is the function of a Master
trip relay? why is it used ?
Answer Posted / vinod
FUNCTION- Master trip relay 86 main function is to pick up the trip coil of the circuit breaker, relay 86 pick up if any of the protection relay of the respective feeder or equipment operate.
86 relay is a manual reset relay (its avoid multiple charging of the faulty system with unknown operators)
USAGE: The relay pick up through the protection relay contact(static or numerical) have less current rating, it can not carry the trip coil current of the circuit breaker
Is This Answer Correct ? | 5 Yes | 3 No |
Post New Answer View All Answers
how can i find ct ratio of meter by seeing name plate of meter and how it should be used in MF calculation if it shows only-/1???
at which voltage level arcing ground is occurs ??????????
checking procedure of capacitor based motors.used in fans etc?
What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?
how does grading rings & spacers in transmission line works? Working Principle?
CAN CU XLPE/PVC CABLE BE USED INPLACE OF LOW NOISE SCREENED CABLE? KINDLY GIVE REASONS
How wire size can define in electrical wiring? What is the ratio?
what does mean of RCT and STR in diffrential CT?
WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING
why normally Generator rating are between 11Kv to 22Kv?
what is working process of star delta controlling circuit ?
Can you explain about TEE protection scheme?
When distance between two pulleys is not fixed, the tension of belt is adjusted by a) driver shaft b) driven shaft c) adjustment screw d) belt
Why Neutral Isolation is required?
How cmd is calculated in case of energy neters