IS HI-POT TEST DONE ON A TRANSFORMER - YES OR NO?
WHY?
Answer Posted / gunasekaran
yes we have to check the insulation helthyness and leakage
current of the insulation.at the time of hipot suppose ur
doing hipot for HV LV should be shortedand earthed that
time we can get healthyness of insulation of the transformer
| Is This Answer Correct ? | 11 Yes | 4 No |
Post New Answer View All Answers
What do you mean by dependent and independent voltage sources?
explain different types of d.c motors?
What is the unit of magnetic flux density?
Dear all, I'm manikandan I have done by DIPLOMA EEE from 2011 , I have 5 years of experience from Power plant instrumentation field , which one field is give long life & which one field is best ,I confused a lot and also I'm studying AMIE, can I choose which department from Section B examination? pls tell me
how much cable size required for 70 kilowatt load.
what is model question rrb junior engineer electrical gr.II
What is the role of Dedicated earthing in UPS System?
What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?
hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.
Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks
Is vtg is controlled by the resistor? if else how much?
The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?
why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)
from where the self excitrd induction generator get the power?why is the voltage regulation is poor of seig?
What are the advantages and disadvantages of the dc motors?