Answer / rajesh tewari

UPS ALWAYS WORK EITHER POWER SUPPLY ON OR OFF BUT INVERTER
WORK WHEN A.C. SUPPLY FAILED.

Answer / navnit

The main difference between ups and inverter is time of
swiching of relays in internal.in ups this time is 3 to 4
ns and in inverter this time is 30-40 ms.

Answer / srinivas

UPS having both converter and inverter. The converter
is to convert AC to DC and the inverter is to convert DC to
AC. The UPS uses either off line or on line.
The inverter is works only when the DC source
available, otherwise it is not working. It is used only for
off line purpose.

Answer / pawan yadav

Main difference between ups and inverter is continuity of electrical power supply maintain by ups. But in case of inverter it takes some time to restart.

Answer / azarudeen

UPS is nothing but uninterpretable power supply it can store
and discharge the DC supply during power cut. But inverter
convert the dc to ac.

Answer / giri kaveti

UPS is nothing but uninterpretable power supply it can store
and discharge the DC supply during power cut. But inverter
convert the dc to ac.

Answer / sunil datta

The Basic difference between UPS and Invertor is of
switichover time .This S. O. time is considerably very
small in cse of Ups.ans does not intruppt electronics
load.

What are the special protection given for high capacity Motor, more then 10mw

2 Answers  

what is single phase motor?

5 Answers  

can we connect both delta and star to the transformer secondary and for what reason?

5 Answers   Power Grid,

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

0 Answers   KSEB,

What difference between MCB,MCCB,RCCB,ELCB please explain briefly with its rating.

3 Answers  

why the starting torque is high in dc series motor..

3 Answers   GM General Motors,

why do we earth the tandelta point of a power transformer bushing?

1 Answers  

can anybody give me current carrying capacity of cables e.g size of cable in sq.mm & its current capacity both alluminum & for copper

4 Answers  

What are the safety devices on Cumins Diesel Generators from 500 kva to 1500 kva.

1 Answers   Maruti Suzuki,

How calculated single phase induction motor req. Capacitor?

0 Answers  

why do we generate only 3ph ac?is it possible to generate 4ph,5ph,....?

6 Answers   Accenture, Bhel, Reliance,

at which places we use 6.6KV Transformers and Motors

4 Answers