what type of oil is used in transformers? a)conduting b)
insulating
Answer Posted / siba prasad
1.now a days synthetic insulating fluids known as ASKARELS(trade name)are used.
2.one such fluid known as PYROCLOR is extensively used due to its remarkable stability as a dielectric strength & have no detorioration through sledging,oxidation,acid & moisture formation.
Is This Answer Correct ? | 8 Yes | 3 No |
Post New Answer View All Answers
what are the problems that generally occur in power flows??
What are the types of transformers according to the arrangement of iron cores?
How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com
I completed my BE EEE degree 2006 .... which license should i apply .... ?????
how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?
Why neutral cable carry current.
Can we use shunt trip coil instead of trip coil with protection relay for protection?
what is star delta starter? how it works? give its control and power diagram.
what is the difference between b c d curves on mcb
Explain cos(theta) and Sin(theta)
what is the difference between circular wdg & ractangular wdg?
What kind of maintenance is conducted for Transformer
TRAFO 1. WHY BREATHER IS USED. 2. WHY OIL GOES DOWN IN CONSERVATOR TANK. 3. WHY WE ARE TAKING OIL SAMPLE TAKING FROM BOTTOM OF TRANSFORMER. 4. HOW TO CHECK IR VALUE OF TRANSFORMER. 5. WHY OLTC HAVING BUCHHOLZ TRIP ONLY; WHY NO ALARM. 6. OFF LOAD TAP CHANGER OPERATION PROCEDURE. 7. TR. SHUTDOWN / ISOLATION PROCEDURE. 8. WHEN THREE TRS. IN PARALLEL, ONE TR. IS NOT SHARING THE LOAD – WHAT IS REASON AND WHAT YOU WILL DO. 9. WHY TR. HAS OLTC IN HV SIDE. 10. WHAT IS % IMPEDANCE. 11. WHY TR. RATING IN MVA. 12. WHAT IS VECTOR GROUP IN TR. 13. CONDITION FOR PARALLEL OPERATION OF TRS. 14. WHAT IS TERTIARY WINDING. WHERE IT WILL BE. 15. IF TR. TRIP ON BUCHHOLZ OR TAP CHANGER RELAY, WHAT YOU WILL DO. 16. DIFFERENCE BETWEEN OIL TEMP. AND WINDING TEMP. PROTECTION 17. HOW WINDING TEMP. IS MEASURED IN CAST RESIN TR. 18. DIFFERENT TYPES OF FAULTS IN TR. Trafo - Page-1 of 2 19. WHAT HAPPENS WHEN TR. CHARGED FROM LV. 20. WHAT WILL YOU DO IF MEGGER READING SHOWS ZERO BETWEEN LV WINDING AND EARTH. 21. CAN WE INTERCHANGE BUCHHOLZ RELAY OF MAIN TANK AND OLTC TANK. 22. IF THE LINE BETWEEN BREATHER AND CONSERVATOR TANK 23. LOCKED, WHAT WILL HAPPEN DURING LOAD CYCLE. 24. WHAT IS THE FUNCTION OF OIL SEAL IN BREATHER. 25. WHAT ARE LOCATIONS FOR BUCHHOLZ RELAY FIXED IN POWER TR. 26. WHAT ARE CHECKS IN POWER TR. DURING MAINTENANCE. 27. WHAT IS IMPORTANT WHEN WE CHECK OLTC OPERATION DURING MAINTENANCE. Trafo - Page 2 of 2
how to test the electrical panel.ht lt mcc pcc.
what type of questions are asked and howmwny questions belong this catagory?