Interested to Buy Any Domain ? << Click Here >> for more details...
How to conduct Magnetic Balance Test, Measurement of
Excitation Current (both on HV- and LV-side) and vector
group on a 1000 KVA distribution transformer. There is a
neutral on HV side.
- 1 Answers
- 7142 Views
- I also Faced
- E-Mail Answers
Answer Posted / mohit.k.k
for magnetic balance test apply the 415 v volt to R phase
then measure Y phase voltage it must be 60 to 80 % of i/p
voltage and B phase should measure around 40 to 20 % of i/p
volatge and when voltage applied to Y phase R & B phase
should read 40 to 60 % of i/p reading. For voltage applied
to B pahse reading should be reverse of first case.
and for measuring excitaation current just give 415 V to
either side H.V or L.V but H.V side prefer and measure
current with clamp meter of all phases.
and for vector group just short the R phase of H.V with r
Phase of L.V
measure voltage as
1R-1Y =
1Y-1B =
1B-1R =
1Y-2y =
1Y-2b =
1B-2b =
1B-2y =
then e.g Dyn11
these condition to fullfill
1Y-2y = 1Y-2b
1B-2y > 1B-2b
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
how to calculate the size of the HT cable
any one please tell taht what type questions will be asked in BHEL interview, i am having interview on 24th Dec, please send this to mail pradeepsistam@yahoo.co.in
What is the physical significant of power factor?
what is the Connected Load (kW) or Contract Demand (kVA)of mahindra nasik plant??
one electromagnet is called
what happen if the load connected to the induction motor is taken away? the same question for synchoronous generator in synch i think that the the exitation voltage will appear on the terminal only if so plz answer me
can we do the star delta connection of capacitor for 3- phase motor starter.
What is the high series capacitance winding on high voltage power transformer ?
WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
CPC cable .PVC \1C....I want to get sure that type is flexible indoor or to be install on trench. please advice .thanx :)
what is the formula for computing cable tray size & capacity
While testing a ZCT what parameters have to check or measure?
what is the working process of over & under voltage relay.
Can 33kva/415v transformer be run underground? If the answer is yes why and if the answer is no why?
