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Raytan
12-11-2008, 05:47 AM
Hi,

I have some motors that are rated 460 volt 1 phase 60 Hz. I understand the more common voltage source is 460 volt 3 phase. So how does one obtain 460 volt 1 phase?

Can anyone tell me more about this or direct me to some links with more information on this?

Thanks

camerond
12-11-2008, 06:03 AM
does it say one phase? or just 460V
because if it's 460V then you're probably going to hook it up to 2 phases.

Raytan
12-11-2008, 06:50 AM
It did mentioned 1 phase.
Some of the motors are reversible.
Also menitoned are the capacitors required.

camerond
12-11-2008, 06:52 AM
best idea would be to get info from the manufacturer. or to look up a wiring diagram for it from google.
what brand and model number is the fan?

Raytan
12-11-2008, 07:04 AM
One of the motors is GE 5KCP39SGL794S.

Others are Carrier models HC52VE463, FH1076 and HC45SL460.

I have tried searching the net for wiring diagrams for any motors that are rated 460 volt 1 phase but cannot find any.

wambat
12-11-2008, 08:03 AM
Try this:
http://catalog.geindustrial.com/dataSheet_motors.jsp?PID=176131&PN=3739&FAM=ac_motors&FAMID=201&Lang=EN&CC=MA&Profile=

nike123
12-11-2008, 09:02 AM
It is still one phase even you connect it between two phase of power supply.
Two phase would be if you connect it like this: phase1-0-phase2.
In three phase power supply you have line and phase voltage. Line voltage is between one phase and earthed 0 from transformer. Phase voltage is voltage obtained between any 2 phase of power supply. What you need is phase voltage of power supply and, by connecting it between any of 2 phases it doesn't mean that you have 2 phase motor.

Direction of rotation with Permanent Split Capacitor is determined by placing condenser at one or another winding of motor, but if motor have one winding of lower resistance, than other winding is "phase shifting" winding, and only he could get his supply thru condenser, and rotation direction could not be changed electrically.

NoNickName
12-11-2008, 12:33 PM
Yes, but remember that you will have two lives, instead than one live and one neutral.

nike123
12-11-2008, 06:30 PM
Yes, but remember that you will have two lives, instead than one live and one neutral.
What is the point in that? Except, that one case have 1 live and other case have 2 live conductors!?

tarcau mihai
12-11-2008, 06:44 PM
do you mean monophasic (one phase )460vac????i did't hear about this...i work on 115 vac(monophasic),220-230 vac(monophasic and threephasic),380vac (threephasic),440vac (threephasic) and 6600vac (threephasic)...
Maybe you have 3 phase and one neutral+ ground(erth conection)...or who know maybe you're right!
Mihai

NoNickName
13-11-2008, 03:37 PM
What is the point in that? Except, that one case have 1 live and other case have 2 live conductors!?


There's a big difference. In a single live wiring, one fuse or single pole protection switch is enough. In a two lives wiring, you have to use two fuses or two single pole protection switches.
If the wiring in the electric box doesn't have bipolar protection switches or fuses, it is UNLAWFUL to connect two live conductors.

nike123
13-11-2008, 04:37 PM
There's a big difference. In a single live wiring, one fuse or single pole protection switch is enough. In a two lives wiring, you have to use two fuses or two single pole protection switches.
If the wiring in the electric box doesn't have bipolar protection switches or fuses, it is UNLAWFUL to connect two live conductors.

Ok, I taught that you mean something different. :p
For example, that it have any difference in functioning of 1 phase motor if you connect it between two phase of 460 V phase voltage, or if you connect it at 1 phase line voltage of 460 V and neutral.