Interested to Buy Any Domain ? << Click Here >> for more details...
When alarm is activated in buccholz relay in transformer
- 1 Answers
- 3028 Views
- I also Faced
- E-Mail Answers
Answer Posted / spl
Depending on the model, the relay has multiple methods to detect a failing transformer. On a slow accumulation of gas, due perhaps to slight overload, gas produced by decomposition of insulating oil accumulates in the top of the relay and forces the oil level down. A float switch in the relay is used to initiate an alarm signal. Depending on design, a second float may also serve to detect slow oil leaks.
If an arc forms, gas accumulation is rapid, and oil flows rapidly into the conservator. This flow of oil operates a switch attached to a vane located in the path of the moving oil. This switch normally will operate a circuit breaker to isolate the apparatus before the fault causes additional damage. Buchholz relays have a test port to allow the accumulated gas to be withdrawn for testing. Flammable gas found in the relay indicates some internal fault such as overheating or arcing, whereas air found in the relay may only indicate low oil level or a leak.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?
i want to know that what is the eligibility critaria for ongc exam?
what is (+) and (-) in generator field detector stand for?
what is difference between 9kv 5ka surge arrester and 9kv 10ka surge arrester.
what is gas turbine intercooling ?
what is DRP panels?
what is the major difference between LIBBP & HIBBP.. which one is most preferable..
Inductor and capacitor........power in one phase and ...... in it another phase.
Which type of a.c motor is used in the fan (ceiling fan, exhaust fan, pedestal fan, bracket fan etc) which are find in the houses ?
what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.
what is basic difference betmeen normal & flame proof motor??
how to increase or decrease speed in DC shunt motor by DC convertor
Do u know any one? how to find out in motor rated amps? formula?
electrical
HOW TO CALCULATE AMPs OF CURRENT TRANSFORMER IN HT Panel
