On the secondary side of a distribution transformer, we use
1c x 630 sq mm cable. Why dont we use 4 core cables instead
of 1 core cables on the secondary. Why we use aluminium
cable glands on the outgoing instead of brass cable glands?
- 2 Answers
- 9864 Views
- Siemens, I also Faced
- E-Mail Answers
Answer Posted / pp
As the Transformer size increases the current flowing
through LT also increases. For Transformers of 630 kVA and
above, single core cables are used for LT as the insulation
is not sufficient enough to carry large amount of current
at source (T/F Secondary)for poly core cables and leads to
phase to phase faults.
Note: current for cable at Secondary termination is larger
than at any point due to creation of multiple circuits.
Poly core cables are available in sizes upto 300 sq.mmm.
for LT .
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?
description about dry type transformers
Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?
what is the difference between droop mode and ischnorous mode in thermal powerplant?
As per the Anchor capstan motor specification, full load current is 200A. starting current is 1750 A and acceleration time is less than 8 seconds. Please guide for selection of cable size.
WHAT IS counter flux IN CT?
Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?
hi, could someone help me to find a control design for syncronising panel .
What is mean by hot and cold loop testing? What is the difference between them?
how to wiring it with contactor and timer together
If breaker is undefined position, first step to do.
What are the advantages and disadvantages of the dc motors?
how to design the heater in temperature control unit to heat 50KL of water?
Difference between HRG and NGR. Are they both the same thing
sir my exam is on 19/6/2013 under electrical branch pls send me sample aptitude questions as well as sample technical questions for jindal steel and power company
