Interested to Buy Any Domain ? << Click Here >> for more details...
single phase 230v three phase voltage 415volt why we aren't
used line voltage 690v?
- 7 Answers
- 23640 Views
- Citec, I also Faced
- E-Mail Answers
Answer Posted / paul jeffery
Some countries (E,G. Sweden) and processes (E.G. Paper pulp) do use 690 V line to line systems (400 V line to neutral)and transform to 690 v from 11 kv. Wind farms often generate at 690 v and step up to 11 kv to synchronise with the grid. 690 v reduces cable sizes and cost vs 400-440 v systems and enables much larger motors to be DOL started - up to 600 kw plus compared to 200 kw plus for 400 v units. A 400 delta connected motor will operate at 690 v when star connected. These are the basics but 690 v has many advantages over 400 v.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
what is the transiant condition in alternator? and how it can be prevanted?
what r PID controllers?why they r used?what is there purpose?plz Explain in detail
why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving
How two nos. 130 kw D.C motor get synchronise using D.C drive.
In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???
how to interlock 3 nos MCCBs using under voltage coil. please provide me circuit diagram?
What are the disadvantages of autotransformer?
What is notching in dc machine?
Whether amorphous core transformer is commercialized or not:Name of company making amorphous core transformer and what are different rating?
volts=230 c=10mf a=??
explain wiring system
pls tell me function of closing coil of A.C.B.
I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR
what is meant by impulse voltage?
How to Design green buildings services? What is the advantage to design green building?
