Interested to Buy Any Domain ? << Click Here >> for more details...
Why we use less dia. fuse and conductors at H.T. side, although we use higher dia. cables on L.t. side?
- 4 Answers
- 7950 Views
- RRB, I also Faced
- E-Mail Answers
Answer Posted / virendra joshi
Universaly W(power) = V X I , mean for a constant power if
current increase Voltage decrese & if viltage increase
current Decrese. In LT voltage is less ( 415 ) so current
is high & fuse is bigger in size, simonteniously in HT volt
is more then current is less hence size of the fuse wire
will be lesse in terms of cross section.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
can we do the star delta connection of capacitor for 3- phase motor starter.
What is miller crystal oscillator? Explain its operation?
What is the effect of atmospheric pressure & Temp; on efficiency of motor? Why NGR(Neutral Grounding Resistor) is used in 132/11 KV Transformer & how? What is the use of Auto T/F in Grid Station?
What information we need to prepare relay coordination chart
What are your future plans for the company if permanently employed?
what is the relationship between phase & neutral
How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?
I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?
What is difference between insulating medium and fault current interruption medium in a switching device.
What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?
I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.
how to calculate the Neutral transformer impedance?
Can u tell me design of switch yard
working principle of AC Servo Motor with its construction
gas turbine genrator reactances
