why transformer is conneted to dc for polarity test.it
doesnt work in dc?
Answer / shyam
polarity can be checked with ac also. but it needs phase
angle measurement. with a dc we can observe +ve/-ve
deflection on galvanometer(u can use ma dc analog meter,
dont use digital meter which will have more response time).
apply dc at low voltage for msec time(flick only) otherwise
ct may saturate. please read CPC100 manual of omicron for
further knowledge.
Is This Answer Correct ? | 5 Yes | 0 No |
Load 380kva eb 415v,load amps 350.Same load dg 415v,load amps 420 what reason ?
1 Answers AVT Natural Products,
Explain the operation of variable frequency transformer?
What is the full form of GSL wire
why no load voltage is greater than full load voltage?
WHY DISEL GENRATOR SET SHUT DOWN IN OVER LOAD CONDITIONS
in a three pin socket y the pin of earthng is longer n bigger...?
I am an electrical engineer, I found variation in KWH between DG and EB for Same load for same duration, can any one help me why this variation arises?
what is the difference between ground, earth and neutral?????????....
the total iron closs in a transformer core at normal flux density was measured at 25hz and 5ohz and was found to be 250w and 800w respectively.the hysteresis loss at 50hz would be................?????
what is b checks and m checks in diesel generator maintenance?
why air handling unit interloking in case of fire
if a 2 ohm resistor,2 ohm capacitor and a 2 ohm inductor is connected parallely to 12v source.Then what is the value of current in each branch.Is current flows in each branch at the same time?If not so then provide the proper sequence