Dear sir,
we are getting voltage fluctuations suddenly for 2 or 3
minutes again it becomes normal. we checked each and every
connection some times we are getting 110 volts like that
from earth to neutral again it is reducing we are getting
supply from 45 kva DG set give earthing properly.
Answers were Sorted based on User's Feedback
Answer / k.prakashchandra
Unbalanced load can not be responsible for 110 V between
neutral and earth.
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / k.prakashchandra
Voltage between neutral and the earth indicates a loose
connection/joint in the neutral wire as neutral extends only
upto the point of loose connection.
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / manoj dubey
generally voltage between neutral and earth occurs when
there is unbalance distribution of load in all three
phases. first check load balancing on phases. also check is
there any single phase heavy load is switched ON at the
time when voltage increases between neutral and earth.
Is This Answer Correct ? | 1 Yes | 1 No |
what is difference betwen genrator and alternator?
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
what is Use of Stones/Gravel in electrical Switch Yard??
give me a clear defination of inductance,and how can u calculate inductance of a motor
WHAT IS MEANT BY SLIP , WHERE IT OCCUR
What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?
hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible
0 Answers Engineers India, Engineers India Limited,
What happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?
Why USe In -48 DC Volt !
Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.
what is the control circuit for operating the clean room air shower
what is the formula of knowing the clabe size on any load?