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Electronics => Electronics => Topic started by: Mastermime on January 26, 2012, 10:32:59 PM

Title: Motor specifications confusion
Post by: Mastermime on January 26, 2012, 10:32:59 PM

Hello everyone,

I bought these motors http://www.monsterscooterparts.com/24vo400wamow.html (http://www.monsterscooterparts.com/24vo400wamow.html) and I'm confused about the specifications.

Here are the specs I'm confused with
Rated Current: 22 amps
Rated Voltage: 24
Wattage: 400

It doesn't come out right

22*24=528 not 400

Am I overlooking something?

Title: Re: Motor specifications confusion
Post by: Soeren on January 27, 2012, 01:16:07 AM

hI,

Quote from: Mastermime on January 26, 2012, 10:32:59 PM

Here are the specs I'm confused with
Rated Current: 22 amps
Rated Voltage: 24
Wattage: 400

It doesn't come out right

22*24=528 not 400

Am I overlooking something?

Yes. The page says "Output: 400 Watts", while you're calculating the input power.
Which means that it has an efficiency of 75.8% (given that the info is correct).