Why is it not possible to operate a star-delta transformer
in parallel with delta-delta transformer?
Answer Posted / sandeep
It is quite possible to operate two transformer in parallel, but condition is both must have same voltage. Here at one side of transformer there is voltage difference with the factor of (3)^1/3 and circulating current will flow at one side of the transformer leading to the increased ohmic losses and thereby efficiency decreases.
| Is This Answer Correct ? | 14 Yes | 3 No |
Post New Answer View All Answers
how to calculate the tarriff for an industry whose kva demand is 10 mva
how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used
What aturn on methods of scr?
advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor
in shunt clippers why a resistor is used in sereis with the input
Explain few advantages of electric traction system?
how to calculate the change over time for star delta starter for different KW motor?
control & auxilary circuits used for circuir breakers
What do you mean by a voltage transformer?
why r we using shell transformer for low voltage
Zone of protection and tripping scheme of arc protection relay.
What are the main advantages of generalized error co-efficients?
2. What are the parameters of EHT sub-station?