Hi,
I have a 2.2kW squirrel-cage induction motor which comes with a datasheet as attached, the machine I'm looking at is highlighted in green.
I need to know the rotor inertia, but there's a bracket that says X.01 after the normal kg.m^2. What does this mean??
I've checked the datasheet of some other induction machines with the same power rating, and it's at 0.089 kg.m^2, which is over 15 times more.
I've got all the equivalent circuit parameters and I tried to reverse-engineer the DOL starting torque and current, and I get about 0.03 kg.m^2 as the inertia.
p.s. I know I could always just calculate the inertia from the motor decelerating curve, but with the equipment I have it's not the easiest thing to do
Any help is much appreciated, thanks in advance!!
Regards,
I have a 2.2kW squirrel-cage induction motor which comes with a datasheet as attached, the machine I'm looking at is highlighted in green.
I need to know the rotor inertia, but there's a bracket that says X.01 after the normal kg.m^2. What does this mean??
I've checked the datasheet of some other induction machines with the same power rating, and it's at 0.089 kg.m^2, which is over 15 times more.
I've got all the equivalent circuit parameters and I tried to reverse-engineer the DOL starting torque and current, and I get about 0.03 kg.m^2 as the inertia.
p.s. I know I could always just calculate the inertia from the motor decelerating curve, but with the equipment I have it's not the easiest thing to do
Any help is much appreciated, thanks in advance!!
Regards,
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