CPS Elec.
Member
- Location
- Bemidji, MN
Has anyone ever experienced receiving a new motor from a manufacturer with an incorrect nameplate?
Absolutely. Weg used to be famous for that.Has anyone ever experienced receiving a new motor from a manufacturer with an incorrect nameplate?
Has anyone ever experienced receiving a new motor from a manufacturer with an incorrect nameplate?
Absolutely. Weg used to be famous for that.
But what makes you think the nameplate is incorrect?
Well, right off the bat, 9-10A being pulled by a motor rated for 2.1A would definitely explain the thermal cutout opening!It a single phase / single rotation motor with a black and a brown wire. Nameplate says .167 hp 2.1fla and 115vac, when bench tested you can hear the thermal overload triping. It runs for about ten seconds, then off for ten seconds, then back on and so on...........checked amps with two different fluke meters and both indicated 9.5 to 10 amps.
Absolutely. Weg used to be famous for that.
But what makes you think the nameplate is incorrect?
More information is needed. What is this motor being used for?It a single phase / single rotation motor with a black and a brown wire. Nameplate says .167 hp 2.1fla and 115vac, when bench tested you can hear the thermal overload triping. It runs for about ten seconds, then off for ten seconds, then back on and so on...........checked amps with two different fluke meters and both indicated 9.5 to 10 amps.
All single phase motors need something to give them a kick in the right direction. The motor the OP describes is too small to have a starting switch.1ph Small motors most often have start and a run windings. ....
OP says .167 HP, is that not 1/6? I have seen many 1/6 hp motors with a starting switch. That small of a motor is often not a capacitor start motor, but simply a start winding with a different inductive reactance than the main winding still resulting in the necessary phase shift to create some rotation.All single phase motors need something to give them a kick in the right direction. The motor the OP describes is too small to have a starting switch.
Yes those types would be more popular on this size of a motor, but I have seen a few 1/6 HP "split phase" motors before. I can't recall any smaller than that though.Shaded pole or PSC would still be my first guess.
All single phase motors need something to give them a kick in the right direction. The motor the OP describes is too small to have a starting switch.
Gotcha.My reply was based upon the assumption that the OP had that the motor had been mislabeled by the manufacture.
Very true.Also, motors that are often used to drive a squirrel cage motor where the motor itself is mounted within the squirrel cage itself relays of the air being pulled around the motor for cooling.
A number of years ago I replaced blower motor an was amazed at the NP rating of the motor specifically the amp rating and then understood why it needed to be placed in the center of the blower otherwise it would have had no way to cool itself.
I don't remember seeing a 1/6 HP split phase motor, I don't doubt they are out there. It is entirely possible I have seen one and paid no attention to what kind it was.Yes those types would be more popular on this size of a motor, but I have seen a few 1/6 HP "split phase" motors before. I can't recall any smaller than that though.
I don't remember seeing a 1/6 HP split phase motor, I don't doubt they are out there. It is entirely possible I have seen one and paid no attention to what kind it was.
One scenario I have encountered that is similar to what the OP describes are motors with a bad running winding. The motor will start, coast a bit, switch closes and the cycle continues.
I thought most of them are PSC.Are not most ceiling fans split phase motors, most I have installed have one or two caps and a current relay in the light housing?
Are not most ceiling fans split phase motors, most I have installed have one or two caps and a current relay in the light housing?