Interested to Buy Any Domain ? << Click Here >> for more details...
Buchholz relay is used ……….
a) protection T/F b) oil T/F c) Air core T/F
- 8 Answers
- 16000 Views
- Engineers India Limited, I also Faced
- E-Mail Answers
Answer Posted / parmod kumar
Buchholz relay is used in specially oil cooled transformer
to prevent any fault short circuit when short circuit
occurs in the transformer tank temperature of the oil
increases and become vapour then vapour evaporates and
enter the buchholz relay which is installed between the
Transformer core and conservator tank.After entering the
relay it tilts the upper float valve of the relay which
give alarm & if continuously temp increase then the relay
operates and give command to Panel tripping relay & trip
the VCB/SF6 .Thus it prevents from transformer.
| Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)
What is dc current source? Differentiate between ideal and non ideal current sources?
For overhead protection we use which transformer?
what is model question rrb junior engineer electrical gr.II
what ispositive, negative, zero sequence impedence?
What are the basic & Majour problems in UPS ?
If we have to feed a housing complex having load 8MVA, than what would be the better option, either we first step down 33kv supply into 11kv & than 430v or we proposed no of 33/.44 kv transformer, also which option is economical?
What are the components of feedback control system?
what is the transformer rush current?
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?
completed BE & done apprentice at tneb & having experience 6 years. want to get c license. will apprentiship & BE be helpful for getting c license. will i get any preference by showing this?
If o/p power is doubled by how much does the sound increase
Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?
What is marx circuit?
