Motor-thermal protection

Sunnyboy

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I’m trying to figure out if this motor is thermally protected. The manufacturer is saying it is thermally protected at 160°C. Everything I can find online is referencing the marking “Prot 160C” as the indication that it is in fact thermally protected. Internal to the motor and monitoring actual temperature rather than current. It’s a European motor and I thought maybe it’s the norm there or something. Is that correct? Any other people with experiences with this? Thanks
 
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I’m trying to figure out if this motor is thermally protected. The manufacturer is saying it is thermally protected at 160°C. Everything I can find online is referencing the marking “Prot 160C” as the indication that it is in fact thermally protected. Internal to the motor and monitoring actual temperature rather than current. It’s a European motor and I thought maybe it’s the norm there or something. Is that correct? Any other people with experiences with this? Thanks
Pretty sure that’s the motors insulation class/thermal tolerance basically temps it can withstand overtime without damaging the motor , pretty sure thermal protection is usually marked “TP”
But its a European motor and “Prot 160c” could very well mean its thermal protection shuts it down when its operating temp hits 160c
 
View attachment 2577030
I’m trying to figure out if this motor is thermally protected. The manufacturer is saying it is thermally protected at 160°C. Everything I can find online is referencing the marking “Prot 160C” as the indication that it is in fact thermally protected. Internal to the motor and monitoring actual temperature rather than current. It’s a European motor and I thought maybe it’s the norm there or something. Is that correct? Any other people with experiences with this? Thanks
I misspoke in my previous comment I didn’t not see the 155 for class F in the upper left hand corner of nameplate and after looking online just like you I’ve found that prot 160c should mean thermal protection but can’t verify
 
What we don't know is whether "prot 160c" means there is thermal protection in series with windings or if there is just thermostat leads that would need to be wired in series with the motor control circuit. With NEMA design motors those thermostat leads would usually be labeled "J", if it is an integral motor protector (on a NEMA motor) the protector leads usually are P1, P2... and so forth if there are more than two leads involved.
 
What we don't know is whether "prot 160c" means there is thermal protection in series with windings or if there is just thermostat leads that would need to be wired in series with the motor control circuit. With NEMA design motors those thermostat leads would usually be labeled "J", if it is an integral motor protector (on a NEMA motor) the protector leads usually are P1, P2... and so forth if there are more than two leads involved.
Good point
 
Unless the thermal protector is an on-board Kilxon, in which case there would usually be a red reset button on the bell housing.
Seen a fair amount of automatic reset types on small motors, some even buried in end housing of the motor so isn't even obvious it has such device until you disassemble the motor.
 
Seen a fair amount of automatic reset types on small motors, some even buried in end housing of the motor so isn't even obvious it has such device until you disassemble the motor.
Good point.
While it is a NEMA convention to use the term “Thermally protected” or TP or something similar, I don’t know what the IEC terminology for that is, might be worth investigating.

PS: looks like this motor is not even following the IEC standards…

Link to article on IEC thermal protection markings

They apparently use “TP” followed by numbers to indicate the method.
 
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