start up current for single phase motor
start up current for single phase motor
(OP)
I need a 230 volt single phase motor that has a low start up current draw. I have a Dayton that runs "at speed" using 8 amps, but the spects show a potential start up draw of 90 amps.( my meter shows 72 amps) I am trying to use a UPS as a backup, but my UPS can only take about a 20 amp spike, and thats it. Is there a motor out there that does not spike so high ?





RE: start up current for single phase motor
RE: start up current for single phase motor
UPSs and motors/high inrush don't mix too well. Long Shot: if you could get past stalling, how about experimenting with something unconventional, like 1ΓΈ autotransformer starting?
RE: start up current for single phase motor
RE: start up current for single phase motor
Make sure the you control the run winding only as this maximise starting torque.
Regards,
GGOSS
RE: start up current for single phase motor
It may be very hard to stay under the 20 Amp UPS spike limitation regardless of the starting method you use.UNless you go down to a much smaller motor.
What about "Bypassing" the UPS during the start of this motor.A typical start under normal load will take but a few seconds.
GusD
RE: start up current for single phase motor
http://www.baldor.com
Baldor Catalog shows:
1.
1 hp single phase motor
winding no. 35-257
FLA 7.3A
LRA 45A
Type 3520L
3450 RPM
2.
10 hp single phase motor
winding no. 37X47
FLA 46A
LRA 260A
Type 3740L
3450 RPM