Answer Posted / pps
NGR means neutral ground reactor. Normally it is used in
Generation stations and long line shunt reactors. Main
purpose is to limit fault current when earth faults. and
also it acts as a phase winding when one of the reactor
winding or generetor winding or phese in lines open or
grounded.
| Is This Answer Correct ? | 12 Yes | 5 No |
Post New Answer View All Answers
if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side
0.5,1,1.5,2.5,4.0.6.0,10,16 square mm electrical wires how much take maximum current in 50htz
all details of DG UPS HVAC
Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?
Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.
in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com
What should be the protection scheme for a 15kw, 3-phase motor working in a lathe machine.
How many types of electric motors are there?
how to calculate singlephase motor efficiency?
can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?
Readings of ER300P Trivector meter
As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?
what are the factors to be considered while design the breaker either HT or LT??
For the requirement of a furnace of temperature range up to 1200 oC using silicon carbide rods, What is the required rate of transformer needed (please do it with all details)?
What is UPS and How do you maintain the UPS Maintenance? Brief Description on UPS maintenance.