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
- 24144 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 safety points of vaccum circuit breaker.
EXPLAIN THE TERMS "INTEREST AND DEPRECIATION" AS APPLIED TO ECONOMICS OF POWER GENERATION.
what is the terminal voltage of dc series generator running at rated speed at no load?
Explain dc generator with its types?
why transformer tank is in rectangular shape what happen when it is in step shape
what is transient stability analysis means?
i need previous entrence exam papers of nhpc.
How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.
what are the specifications we must look at to select a relay for any capacity motor?
What is the drawback of class b amplifier? How is this minimized?
While testing LA mast,What are the parameter limits ?
What is the most essential condition for the voltage build up for a d.c. Shunt generator?
Which types of gate insttaled in static switch. Please give me answer.
After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.
what is the Pickup/drop off ratio in BCPU relays
