What is vector group? What is meant by DYN11?Why is it needed?
- 13 Answers
- 81909 Views
- Areva, Bhel, BRG, Escorts, Fortis, I also Faced
- E-Mail Answers
Answer Posted / earnest paul
It means that the LV winding voltage lags the HV winding
voltage by 30 degrees.
The 11 typically means 11 o'clock on a standard clock.
whenever you see a vector group like Dy11 ar Yd1 or Yd5 ...
all you have to do is first FIX THE HV WINDING AT 12 o clock
now the 11 shows that it is behind 12 on the clock so you
can say that the LV is lagging by....30 degrees
in Yd1, the lv windings is at 1 o' clock meaning it is
ahead of 12 o clock by thirty degrees so it means that the
LV winding leads the HV winding voltage by 30 degrees
in Yd5, the lv windings is at 5 o' clock meaning it is
ahead of 12 o clock by 150 degrees so it means that the LV
winding leads the HV winding voltage by 150 degrees
| Is This Answer Correct ? | 48 Yes | 17 No |
Post New Answer View All Answers
how to calculate vfd o/p voltage by frequency
What are the types of excitation system?
what is the meaning of neutral displacement ???
What are approaches to tackle sedimentation problem of reservoir?
IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.
why dc is used in control circuit for mv & hv switchgear instead of ac
v/f drive basic princeple
Pl.brief me any electrical major fault you have rectified.
why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?
in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.
How much kv gas generator is needed to run 2 hp and 1 hp airconditioners, plus a refrigerator and 4 Tvs
I have 440v power coming to facility,( not being used ) can I buy large generator, (gas) to sell power back to electrical co.
EXPLAIN USE OF ROCKING ARRANGEMENT IN ELECTRIC HEATING?
In which working principal temperature transmitter work.explain in detailed.
what is reverse power relay brief explanation and in b/w where it is connected
