Answer / sennapparajan

Master trip realy is the main trip relay.The breaker will
trip through This relay only. in transmission &
disttribution line there are so many protection relays
like....distence relay overcurrent earth fault,
diffrential. All the relay'S contact will connet parelly to
master trip relay. if any of the protection rely sence the
fault... it will energise the master trip rely and the
master trip relay will trip the breaker.it got one more
name like lock out relay.

Answer / linu mohan

master Trip relay 86 is the main tripping relay in the relay
protection scheme.It is actually tripping the breaker
poles.It acts because of the stimuli from any of the
protection relays.It's tripping coils are related with the
actuators from different relays.For example Directional
overcurrent relays and earth fault relays

Answer / satya rout (oeg rr)

In a transmission &
disttribution system a high voltage line there are so many protection relays are used
like-distence relay, overcurrent & overvoltage rly, earth fault rly,
diffrential rly . All the relay'S are connet paralley to
master trip relay. if any of the protection rely sence the
fault... it will send a voltage signal ,then energise the master trip rely coil and the
master trip relay will trip the breaker.

Answer / 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

Answer / k.prakashchandra

If the trip relay has to open more than 1 cbs or circuits
,it is called master trip relay (86G)It is used in
protection of Trs and generators.

What are the different losses In a de mac1une'! t.xplam

0 Answers  

how to deside the capacity of chock for drive?

0 Answers   Essar,

How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?

1 Answers  

in the exciter the power is feeded from battry or control or whatever.and we need it in the generators for the stating . do we need it in the shutdown also?i mean the exciter>

2 Answers   Shell,

how brushed dc motor operating ?

0 Answers  

what is the maximum load sutiable from earth to phase and what is the max voltage earth to phase suitable

1 Answers  

A 11 KV motor is working. if the supplay is fail. what will happened with it's breaker? Trip / remain the same condition?

4 Answers  

what is the working of vfd drives.

2 Answers  

What is the difference between bushing and insulators.? what is the creepage distance?

4 Answers  

if the length, number of turns and area of coil are doubled then inductance of the coil becomes.?

1 Answers  

How many double suspension hardware fittings are required on a double circuit transmission tower?

0 Answers  

What happened when capacitor connect series in ac circuit?

0 Answers