what is the difference between the 94 lockout relay and 86
lock out relay. I have noticed that the 94 lockout relay is
activated when the distance realy is activated and 86 is
activated when the 87T differential is activated. but why
can't the same lockouts be used for both the protection
schemes
Answer Posted / yaldilip
94 is self reset relay trip relay
86 is lockout relay having two coils trip coil and reset coil once the trip come the trip coil will energize and plug will down once the reset coil energize and the fault will clear tan reset coil will energize and the trip coil will drop.
Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.
difference between ac series and parallel circuit
how does a shunt reactor maintains the bus voltage???
Why is negative feedback invariably preferred in closed loop system?
what is load despatching
is it possible to have dc motors on single chip
How to calculate earth fault current for 6.6 KV , 50 HZ , 756 Amps , 3000 RPM , 0.8 PF generator
what is the string efficiency
What is resonant frequency?
what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable
Why space heater is required for each verical bus bar chamber? if one space heater is adequate or not for anti condensation?
What is the difference between voltages or potential difference? And what are they?
explain comutator action in detail.thanks
in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.
please send me latest & previous years question papers for IOCL Technical level questions