Interested to Buy Any Domain ? << Click Here >> for more details...
What voltage is used in Directional earth fault relay? and
why?
- 5 Answers
- 12212 Views
- L&T, I also Faced
- E-Mail Answers
Answer Posted / rajesh bodduna
Open delta voltage is used to check the direction of fault,
i.e secondary voltages are connected in delta fashion with
open at one end . . The directional earth fault relay will
get volatge from open delta and currents from CT's as inputs.
| Is This Answer Correct ? | 1 Yes | 3 No |
Post New Answer View All Answers
Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.
why we use 630mm single core cable for transformer secondary side and why two neutral cable
difference between crane drive and line drive.
what happens if dc supply is given and the remedies for it.
what is x'mer ,isolation x'mer & yltra-isolation x'mer?????
HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?
What is the difference between indoor and outdoor transformer
we can run 2phase as 3phase .what will be the differnce with respect to phase angle, power, current between the two modes
A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram
What are the types of feedback oscillators?
How to calculate fault level of 11 KV system
how can i get the formula to find out the cable size if i know the load of main fuse protection.
what are all types of cross section in AC cables?
what is meant by IGBT how they differ from tyristor ?
What are the types of piano switches?
