When charging a 20 MVA , 33kV/6.6kV transformer through
regulated (0-6.6 kV or 0-33 kV) source on no load , what
will be the maximum current drawn by transformer from
source and what sould be the source capacity.
Answers were Sorted based on User's Feedback
Answer / dinesh lokhande
Actually above answer is not correct as it is the full load
current.No load current is approximately 4 to 5 % of rated
full load current. hence considering the terminals (i.e HV
side or LV side) the current drawn from source will be 4 to
5 % of respective side rated current.
| Is This Answer Correct ? | 8 Yes | 2 No |
Answer / satya
the charging current is about 6 times the full load current
about 2000 amps but that will be for mill seconds
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / gunasekaran
for good transformer it should be 0.5%of full load current
for normal it may be upto 1%
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / pulkit
max current when on load wil be 390 amp drawn by the Hv wdg
of t/f and when on no load the transformer primary losses
occur on the basis of elctic flux principle in which when evr
the current flows in a loop,there is loss in the form of
magnetic field energy that is created arround the primary
coil.it is 1 % of the hv wdg current.
| Is This Answer Correct ? | 0 Yes | 0 No |
how water and air molecules are conduct the heat?
what is the mazor difference between the induction transformer and synchonous motor?what is the similarity between them?
How to design power source say 5KW i/p :415v 3 ph, o/p 5KW constant, variable currnt and variable volatge 10-230v,
heat can flow from a body at low temperature to a body at higher temperature only when ........ is supplied from an external source A). Voltage B). Current C). work D). Mass
whye the current increases in the motor when the load on the motor increases
what is the principal of starting of a three phase induction motor.
Parts of machine and their discription in details with suitable photo
in three phase 11kv transformer (11kv/433v) input( R,Y,B) output (X,Y,Z,N) the connection as follows 1 phase R -open 2phase y connected to both R and y of input] 3phase B- B what is the output voltage X to N ,Y to N , Z to N
what is the question paper model for section engineer in RRB
i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls
how is choose &depending upon the load why?
Why Phase to Neutral get spark
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)