Answer / rvg

SMPS- switch mode power supply is the best solution for
such frequency variable supplies.

Answer / yuvi

I completely agree with Rvg. SMPS is the best possible
solution when it comes to varying the frequency and
voltage. Good thinking Rvg. Compact, efficient and
effective, the only disadvantage is radio noise created by
it which can be easily shielded.

Answer / vinay

using PIU(POWER INTER FACE UNIT).its working is i/p voltage
is HIGH r LOW.but o/p is CONSTANT.

Answer / k.prakashchandra

Frequency is dependent on the prime mover, the speed
regulation of which, is very bad.

Answer / vikramsenareddy

please arrange AVR( autometic voltage regulator)

Answer / shilpa

the logic behind stabilising the frequency fluctuations is
to slow down the rate of change of current in the circiut.
we should use a proper rating inductor in serieswith the
supply....thats it.

Answer / mubashar ali

Question is not clear , bcz i dont know about source of
power, if generator then u should be istalled AVR, not
possible this fault in grid supply

I am working in transmission network, one of my 66kv line having short distance about 6km, when sending end voltage is 67kv receiving end get 69kv, i want to know that, does distance affects in this matter, please explain in this matter & if possible answer me on my mail id, kaushikkumar.vanavi@getcogujarat.com, kaushik.vanavi@gmail.com

5 Answers  

What is Scheme Test of High Voltage Switchgear. Which tests it includes.

0 Answers   Siemens,

WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE HAVE RELATION DERIEVED BETWEEN THEM

4 Answers  

Can we use LT(150 sq. mm) cable in place of HT (120 sq.mm.) cable.?

1 Answers  

How to test REF relay testing for LV panel as per Kahramaa standard?

0 Answers  

what happen if one of 3-phase line has a much higher load when we are using delta to star transformer? how we can over-come from that?

2 Answers   Getco,

it is possible to run 130V AC and 230 V AC cables run in same tray

2 Answers  

if 15 kv is grounding directly what will happen?

5 Answers  

How impulse levels are calculated that for 11kV impulse is 75kvp, for 24kV impulse is 125kvp ?

0 Answers   L&T,

EXPLAIN THE TRANSFORMER MAINTENANCE?

0 Answers   Enercon, ERT, GEL,

how i decrease the neutral to ground voltage , thats i read 7v on my digital meter.i dont know about my earth pit.

2 Answers  

What is the formula for calculating Transformer Losses & Efficiency. I want to compare the Transformer efficiency at different loading condition.

6 Answers   Rays Power Experts, Techser,