what is pressure relief valve in D.G ?state its function?

Question Posted / guest

3 Answers
6843 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is pressure relief valve in D.G ?state its function?..

in DG

i am answering about transfdormer
PRD (pressure relief device) using also in transformer
the function remain same
when the fault occcures in transformer , the oil pressure ,
tank mechanichal preessure affect the transformer ,
when fault occurs the oil temperature is high , and ur oil
expands and pressure will be increase

so u use the PRD for relese the pressure of transformer

Is This Answer Correct ?

2 Yes

0 No

what is pressure relief valve in D.G ?state its function?..

Answer / dinesh (techie.dinesh@gmail.co

whenever the pressure in the transformer tank increases, the
pressure is released by PRD. PRD reduces the pressure by
splashing the oil outside the tank, i.e the PRD has a preset
value, if the value exceeds beyond the preset value, the prd
comes in action.

and when the PRD reduces the pressure, the vertical
flap/flag mounted on the PRD raises. although the pressure
is reduced, the flap wont lowered, it is used to indicate
the supervisor/operator that the pressure value has
increased. once the operator get noticed, he will manually
lower that flap

Is This Answer Correct ?

1 Yes

0 No

what is pressure relief valve in D.G ?state its function?..

Answer / sunil guru

elobrating the above answer..
pressure relief valve is used alonge with the BUCCHOLZ RELAY..
whenever there is an incipient fault in transformer due to
oxidation the gases are produced in the oil ... which expands
the oil so to auto relief that valve we use pressure relief
valve...

regards

Is This Answer Correct ?

1 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...

0 Answers

what is the response time of relays when a FAULT OCCURS IN A POWER SYSTEM?

2 Answers

length of 4 core cable 95mm from substation LV VFD panel to Motor at field approximately 150 meter. Motor stop and power has been isolated from LV MCC ( Substation )to disconnect Motor for services. After Motor completed service propose to reinstall and reconnect Motor Cable, found earth cable sparkling during touching at metal / motor body. Inspect by clamp meter found earth cable have current flow AC 1-2amps and all earth cable at MCC LV also have current flow as same value. why it is happen?

2 Answers

what is the meaning of pi value?

1 Answers

WHY THE RATINGS OF THE TRANSFORMER IS 33KV WHY NOT OTHER???

0 Answers Lanco,

Which type of air compressor is used now a days in the market. Keeping in mind of energy efficiency and maintenance points. Relevant documents may also be sent on mentioned email ids.

0 Answers DAE,

How we can calc. the Backup time of a battery Bank???

6 Answers Emerson,

IF ANY MATERIAL AVAILABLE IN MARKET FOR MOTOR PROTECTION INSTEAD OF OLR & CONTACTOR ?

1 Answers

When Alarm report at LED,Alarm volatge is 11-13 Volt But LED is of 3 volt.then why not it burn?

0 Answers

Impedance relay is directional relay or non directional relay?

2 Answers KSEB, NTDC,

hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E

0 Answers HPCL,

What is battery Limit ?

4 Answers NDDB,

For more Electrical Engineering Interview Questions Click Here