Interested to Buy Any Domain ? << Click Here >> for more details...
What is the diff. between two phase & three phase supply.
- 7 Answers
- 36117 Views
- Crompton Greaves, I also Faced
- E-Mail Answers
Answer Posted / v8snail
In the case you're asking the question about 2 phase power in the farming community (as opposed to the old 90 degree out of phase 2 phase power), although colloquially known as 2 phase it is in fact split phase power. Due to economics of the long transmission lines required for rural electricity distribution, only 2 conductors are usually used at an elevated voltage (often 22 kilovolts) and a transformer utilised at each spur line tapping point (often 1 for each property) which converts the high voltage to 480v with a centre tap effectively giving 2x 240v in phase (for Australia). These two phases can be split between different circuits in a house or workshop, or in the case of high current draining devices or machines (like a wool press, large welder, large heating element or large pump) can be connected in series to give 480V power for devices designed to operate on this voltage, with only half the current required than for 240v single phase. 2 phase motors often have the option in the junction box to wire it up as single phase 240v or 2 phase 480v (a typical wool press will draw about 20 amps on 240v single phase and only 10 amps connected as 480v 2 phase).
3 phase was explained in earlier posts, usually requiring 4 conductors for transmission with 1 being for the neutral/earth return.
| Is This Answer Correct ? | 9 Yes | 0 No |
Post New Answer View All Answers
CALCULATE THE TOTAL VOLTAGE DROP AND SELECT THE CABLE SIZE IN MM-SQARE FOR A PANEL-262KW AT 110 METER FROM THE SOURCE SUPPLY , SUPPLY VOLTAGE 240/415
What type of wiring series or parallel is used for conventional and addressable type FAS & why?
Show Details FROM:Muhammed Ikram TO:qa@allinterview.com Message flagged Saturday, June 4, 2011 10:07 PMMessage bodyHello all, i want to ask a question to all of you that what is VMM (voltage monitoring module )? how it work,s? i heard somewhere that it compare 1 phase voltage to other phase voltage. but there is also some setting on it. how to set it,s setting. please tell me briefly. Thank,s and Regard,s. Muhammed Ikram.
explain the function of brush less dc motor?
What type of fittings and electrical accessories can be install in radiation area ?
Define settling time.
what is p.s impedance measurement test in earthing transformer?
why swinburnes test cannot be performed on series machines?explain
If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.
hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...
slipring induction motor starting time Lrs operating why lrs starting time lrs outer body didn't get shock
The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?
What tests should i carry over on a newly rewinded DC Generator with voltage rating of 38 volts and current rating of 350 amps, to certify that the machine is OK?
What is the voltage gain or transfer function of amplifier?
What’s electric traction?
