What are the different protection systems used to protect
the transformer internally and externally?
Answers were Sorted based on User's Feedback
Answer / sewagudde
tx protection includes:
buccholz relay
oil and winding temperature relay
pressure relief valve
restricted earth fault protection
differential protection
tx earthing
Is This Answer Correct ? | 46 Yes | 2 No |
1) Differential Protection
2) Winding Temp
3) oil Temp
4) Under Voltage
5) Under Frequncy Protection for Higher Range of Power
Transformers
6) Bucholz Protection
7) Pressure reilef Valve
8) Restricted Earth Fault Protection
9) Master Trip (ie Inter Trip )Conected to isolate X'mer
Brom Both Ends
Is This Answer Correct ? | 24 Yes | 4 No |
Answer / remus de jesus
In our design, the common protection would be:
1. Bucholz Relay (96) - initiates transformer differential
lockout
2. Pressure Relief (63) - initiates transformer
differential lockout
3. Winding Temperature (26W) - initiates first a timer set
between 0 to 30 minutes, and after a pre-determined time
will initiate differential lockout
4. Oil Temperature (26Q) - initiates a timer set between 0
to 30 minutes, and after a pre-determined time will
initiate differential lockout
5. Sudden Pressure - initiates transformer differential
lockout
6. Transformer Overcurrent (50/51/50N/51N) - initiates
tripping of low side breaker
7. Ground Protection/Ground Overcurrent Relay (51G) - the
connected relay in the neutral of the wye winding is used
generally to protect bank circuit from ground faults
Fire fighting protection protects transformer from external
fires. But if fire is caused internally, this mechanism
provides no protection of the transformer at all.
Is This Answer Correct ? | 15 Yes | 1 No |
Answer / venkat iyer
1) Differential Protection
2) Winding Temp
3) oil Temp
4) Under Voltage and over voltage
5) Under Frequncy Protection for Higher Range of Power
Transformers
6) Bucholz Relay Protection for oil cooled transformers (to
detect incipient fault)
7) Pressure reilef Valve for oil cooled transformers
8) Restricted Earth Fault Protection
9) Overload, short circuit and earth fault protection
10) Protection against fire in case of oil cooled
transformers
11) directional protection
Is This Answer Correct ? | 12 Yes | 2 No |
Answer / dinesh kumar
1.Gas Operated Relay ( GOR )/Bucallas Relay
2.Magnetic Oil level Guage
3.Winding level Indicator
4.Oil Level indicator
5.oil Pressure indicator
Is This Answer Correct ? | 10 Yes | 5 No |
Answer / minal
one of the protection systems used in the transformer is
Gas operated Bucholz relay.
The transformer is filled with oil. On passing current
through it, gas bubbles are formed inside it.After the
formation of gases, immediately the relay gets operated &
it will sense the gas which gets build inside the
transformer. These gases are harmful and which switchoff
the transformer. This relay sense the gas & trip off the
transformer before a fault is occured
Is This Answer Correct ? | 12 Yes | 7 No |
Answer / hassina bibi
1.Buchholz relay
2.Lightning arrester
3.Differential protecton
4.Sudden pressure relay
5.Pressure relief relay
6.Overcurrent relay
7.Overfluxing relay
8.Overvoltage protection
9.Restricted earth fault relay
10.HRC fuses (Small distributon transformer)
11.Horn gaps
12.Thermal Overload relay
Is This Answer Correct ? | 7 Yes | 2 No |
Answer / remus de jesus
And another thing....I thought I have already said it...
8. Transformer Differential Protection (87T) - initiates
transformer differential lockout
Is This Answer Correct ? | 4 Yes | 2 No |
how does directional relay work incase of ac ?
What is Surge arrest? How it work?
i have DEEE certificate in vinyaka misson unive rsity. is a INGNO if possible get the electrical C licences in Tamil nadu?
what is subtransient , transient and steady stateac components
Is 2000kva stabilizer suitable for 1h.p split air conditional
what is the difference between single core,three core,three and half core and four core, and where it can be used ,
What is the use of Exciter in generator? & what will be the current of Exciter in 500 KVA DG Set?
why exterrnal C.T. protection is used even though ACB& VCB is having inbuild C.T. protection?
what is soft starter?working principle?where it can use?
why reactor is connected before capacitor in APFC panel
What is tan delta & PPM in transformer? and whats its IS value?
how calculate external illumintion in a compound area. for e.g. there is one open park having 600m2 area and i have to put 40w flouresent tube fitting with pole. how shall i calculate the numbers of fitting.