volts/amps question

[zeropointbug]

No, it's not a constant power device... but, that's what the motor can handle (before hitting specific temp) at different voltages... when running a lower voltage, it can handle more current passing through it's windings, this has to do with efficiency curves of motors at various voltages/rpms. It's kinda hard to explain, but you get it don't you?

[skellyo]

Originally Posted by zeropointbug

No, it's not a constant power device... but, that's what the motor can handle (before hitting specific temp) at different voltages... when running a lower voltage, it can handle more current passing through it's windings, this has to do with efficiency curves of motors at various voltages/rpms. It's kinda hard to explain, but you get it don't you?

I don't believe that's true either. Higher current in the motor will produce more heat, period, no matter the voltage applied to it. If it were designed to handle 100A for 30S, it's not going to be able to handle 200A for 30S just because you half the voltage. This has nothing to do with efficiency curves either, it has to do with I^2R losses in the motor windings.