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
- 23930 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 shoud be strength and weakness to impress interviewer????????
EXPLAIN THE TERMS "INTEREST AND DEPRECIATION" AS APPLIED TO ECONOMICS OF POWER GENERATION.
how to check ac servo motor
1 Ton is equal to how many watts?
Why mostly the HV side of transformer has Delta?
What is the polarization index value ? (Pi value)and simple definition of polarization index ?
why we used ZNO in Lightning arrester.
What is stepper motor. What is its uses?
sir i want previous entrance exam papers for written test
what material is the electrical housing wire made of? is there any difference for the telephone lines?
why US countries maintains 110v and 60HZ
How can find thermal state value in relay for calculate thermal overload.
what is excitation/
In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?
How to know th details about an electrical Drawing ? Please mention the easy method.
