why transformers are put with supply for 24 hours before
giving supplying to a locality?

Answer Posted / aluko

it is to allowed the rush current to induce maximum flush in to the field for stability so that there will be not fluctuation in supply voltage to the locality due to in rush currents.

Is This Answer Correct ?    0 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How will polarity test of Dy5 Transformer ?

1699


How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

1567


is it true there's a big difference in using Cummins or Denyo...especially power output or leakage

1393


7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1775


How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?

2458






what is the voltage regulation for unity and zero power factor?

1755


Why HT 11 KV Slipring Motors are connected in star ?

1766


What is critical disruptive voltage?

839


What is the drawback of class b amplifier? How is this minimized?

670


application s to shunt coil

1496


Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..

1645


what are the effects when a salient pole alternator is run at high speed like 3000 r.p.m?

1942


What is earth?

1790


What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

1648


What is resolution of a measurement?

732