Interested to Buy Any Domain ? << Click Here >> for more details...
what type of relays used in transformers?
- 24 Answers
- 66671 Views
- APTransco, BSNL, I also Faced
- E-Mail Answers
Answer Posted / suresh kumar
There are many types of protection relays used in
transformers depend upon its construction, size, use etc.
They are
1. Buchholz relay for incipient faults like short ciruit,
winding temparature protection, oil temparature protection,
oil level protection, oil pressure protection, Pressure
relief valve (for oil filled transformers)
2. Differential protection
3. Thermal Protection
4. Earth fault protection
5. Over current protection
6. Over excitation protection(where OLTC is used) etc
| Is This Answer Correct ? | 64 Yes | 5 No |
Post New Answer View All Answers
FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?
Showing results for capital, machinery, stock,wages, carriage in words, salaries, factory rent, repairs, fuel and power, buildings, debtors, sales, purchases, creditors, return outwords, return inwords, drawings, discount allowed, discount receivable, office expenses, bills payable, bills receivable, cash in hand, cash at bank, office rent comes under debit or credit
earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?
Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?
how does the thyistor work in dc drive?
What is the difference between earthing,ground&nutral?
Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.
In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?
what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero
The electrical energy required to raise the tempreture of a given amount water is 200 kwh. If the heat losses are 20%, the energy required is?
WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM
what is differnce btwen lll and lllg faults
How will calculate losses in an multi core Aluminium LT cable of different sizes & upto what length we can use a LT Cable ?
What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning
what is auto re-closer?
