0
Still curious? Ask our experts.
Chat with our AI personalities
Jordan
Judy
RossIf you look carefully at a Buchholz Relay, it is not 'slightly inclined'. In fact, it is perpendicular. However, it is located in an inclined pipe between the transformer and the oil expansion tank above the transformer. The reason why the pipe is inclined is to allow any gas generated by a fault in the transformer to move upwards towards the expansion tank. This gas will then collect inside the relay, causing the warning float to move downward and trigger an alarm inside the substation.
The conservator tank is installed above the tank level. The gas bubble tries to move to the conservator tank, in between the buchholz relay the gas bubble gets holded in the buchholz relay (becoz of that 5 to 7 deg angle and also the oil pressure of conservator tank bcoz of angle inclination (if it is vertical, no pressure to conservator and buccholz relay) )and it presses the float in buchholz relay to downwards and it will activate the alarm trip for once if the gas develops at the time of fault.
suppose if the pipe is totally horizontal the gas try to accumulated at the top of the pipe (not in the buccholz relay) gas will go to conservator tank directly becoz (buccholz relay also horizontal if pipe is horizontal).so the purpose of buccholz relay fails.
Regards,
Balaji K,
APL,Ahmedabad
Add your answer:
Earn +20 pts
What is buclozs relay in transformer?
A Buchholz relay is situated in an inclined pipe between the transformer itself and its expansion tank. It (a) provides an alarm should there be an oil leak or if excessive gas accumulation within the relay and, (b) will disconnect the transformer in the event of a major oil loss or a surge within the oil (caused by a fault within the transformer).
Drop out voltage of a solid state relay?
Typically, when the coil voltage on a relay is decreased gradually, the relay "hold" will release at a certain voltage. This is usually defined as the Drop-out voltage (defined at some minimum value). Now, in the case of latching relay, the Drop-out voltage is called the Reset voltage.
What is phase angle?
The angle by which a circuit's current leads or lags its supply voltage.
How capacitor and resitor in a circuit effect the phase of input voltage?
A capacitor and a resistor has no effect on the supply voltage; however, this particular load combination will cause the load current to lead the supply voltage by some angle termed the 'phase angle'.
How does the low-voltage circuit controls the power to the high-voltage circuit?
Through a relay or some other kind of high voltage switching device.
