why neutral and earth should not be connected on 3 phase
440v/50c/s supply at consumer side. where as on
25kv/ac/50c/s railway traction substation neutral and earth
will be connected and track at substation. and track will
act as neutral and earth. Reasons for this is needed
urgently
- 4 Answers
- 7523 Views
- I also Faced
- E-Mail Answers
Answer Posted / jicks patel
voltage level at consumer side is generally kept low (230v
or 440v),any shocking moment should face fuse sensually.so
no more cost required like earthing.
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?
Explain Circuit Breaker Trip Characteristics in detail.
What is Control & Relay Panel? And Remote Control Center?
1.what is mean by 8/20 micro sec waveshape
How to calculate the copper in HT motors if KW, RPM & Voltage is given
What was your role in the silicon evaluation/product ramp? What tools did you use?
what is the difference between elcb and rccb ?
How to calculate the efficiency of Turbo Generator(Alternator) in general....?
what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?
can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...
What is class ab operation?
Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA
my bachelors was done with EEE now i got admit in NU with CS as course. how to answer this qns 1) why u choose cs? 2) why u changed from eee to cs
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.
How to size Air Circuit breaker (ACB)? What is the most important factors?
