What is the function of Buchholz relay in transformer ?
Answer / pradhyumn
Buchholz relay is installed between the pipe connecting the
main tank & conservator. It indicates about the incipient
(initial) faults like insulation failure, core heating, and
fall in oil level due to leakage joints.
During initial faults when oil in the main tank decompose,
hydrogen gas is produced as result whose volume is more
than 70%, so this gas as result of being lighter tries to
escape to the conservator which is at the top, but gets
caught in the buchholz relay, where when determined amt. of
gas is accumulated, it gives the alarm of gas surge.
During major faults when enormous amount of gas is
released, this causes the oil surge which enters the
buchholz relay & thus due to this oil surge the causes the
circuit to trip as this being the major fault.
* Used in oil and gas surge protection.(plz. forgive
spelling mistakes.)
Is This Answer Correct ? | 13 Yes | 1 No |
in dc shunt motor if armature wdg is open then
how to differentiate a mpcb,mcb with a contactor? Explain their working operation
whether inrush current for lamps or capcitors should be considered cable sizing to feed that load.
In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?
what is meant by Hrc fuses.?In the distribution system different rating hrc fuses are used for tranformer(which is 3k,6k,10k,15k etc).what is k?.plz any brother tell me about k?
in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)
Why celing fans will rotate slowly after some days.?
if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain
what is synchronizing panel & its working.
what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB
megger how much voltage will produce ?
Mechanism of Wye Delta Starter?