Interested to Buy Any Domain ? << Click Here >> for more details...
Why we need to carry out knee point voltage test of current
transformer ?
- 1 Answers
- 7514 Views
- Power Grid, I also Faced
- E-Mail Answers
Answer Posted / satendra
There are three regions were a transformer works. They are:
1. Linear region
2.Knee point region and
3.Saturation region.
Knee point voltage is a point on the magnetizing curve of a transformer.A 10% increase in flux density(voltage) will bring in an increase of 50% in the Magnetization (Current). After the knee point voltage the transformer enters saturation region for which there is infinite Magnetization (Current), but voltage remains at the same level. This condition is seen as open circuited on the secondary. This will surely spoil the insulation level of transformer and ultimately the transformer will burn
| Is This Answer Correct ? | 17 Yes | 3 No |
Post New Answer View All Answers
in star-delta tranformer,if the input of star connection is 400/7v 3 kva then what is the output of delta connection?
we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.
why we change the direction of winding in rotor ?how we make the north and south pole?
Maintenance of transformer???
Why control of DC motor is simpler?
Is the theorem applicable to ac sources?
What is the basic principle of operation of alternators/dc generators?
how to calculate maximum current
technically, what is the reason behind starting the motor star the delta connection .. and what other ways to do this rather than using " star-delta transformer"
What is the approximate value of stacking factor?
What is a surge supressor why its is used in synchronous generators
I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)
explain PV modules in solar energy generation.
give me atleast four differences between circuit and network
What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva
