Why we have short circuit the secondary of the transformer

Answer Posted / vshnu

that is l.v side,
at h.v side current is less and voltage is high
but l.v side voltage is less and currents is high
in order to get current rated we have to short circuit the l.v terminals by applying less than rated voltage at h.v side.
the small amount of voltage at h.v side is enough to produce rated current at l.v side so that test is conducted on l.v side only,
the small amount of voltage at l.v side not able to produce
rated current at h.v so we are not short circuiting h.v side
refer p.s bimbra book

Is This Answer Correct ?    5 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

please send the IS strandard for electrical to sakthi_murugan86@yahoo.co.in

1819


How can we select suitable capacity generator for three phase load (inductive load) and how to take study analysis in 3 three phase load system ?

1665


What is servo motor and what are different types of servo motor

1875


in my working site. momentary jerck in electrical supply ocurred frequently which cause of multiple losses in our electrical equipements. how can we protect our electrical machines and equipements in this situation.

2633


How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

1884






What is non-minimum phase transfer function?

635


In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?

1218


A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?

669


magnetizer priciple

1571


What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

1896


A cotter joint is generally used to transmit

795


Which do you think is the most significant cause of energy loss in a factory?

1760


mccb service sittings be done?

1360


how to calculate the Neutral transformer impedance?

1824


What is primary and backup protection?

742