Small appliance motors û 60hz to 50hz

[Phreddy]

I’ve read the 50hz-60hz FAQ (excellent by the way) and was wondering how/if small intermittent use appliance motors might mitigate some of the issues presented in the FAQ, or indeed if they might introduce other issues. I have domestic stand mixers in mind, specifically the KitchenAid 575W Pro600.

By their nature the use is pretty intermittent, typically short duration and, unless kneading large amounts of bread dough, I would think in a majority of instances running at far less than even 50% of rated hp. The motor is however tightly enclosed perhaps making them more temperature sensitive, the mixers do employ a “soft start” and have speed controls perhaps complicating the whole 60hz-50hz situation.

Your thoughts would be very much appreciated.

Thanks,
Phreddy

 

[itsmoked]

Thanks Phreddy.

Your KA mixer is likely a universal motor and might even work with DC though they would freak at the suggestion.

You are right the intermittent duty cycles are probably going to let you get away with some frequency abuse. My double chocolate chip cookie recipes get mine "smelly hot". KA states that the mixer can get too hot to touch and "it's okay".

The "soft start" feature is likely nothing more than fly-by-wire slow "knobbing" up of the standard speed control function. Not what we call SoftStart around here.

1-800-541-6390 Would let you ask them directly.

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[jraef]

Well, it says it has "commercial style" motor protection, 10 speeds and electronic speed control, sounds as though it has a VFD of some sort in there. But Keith may be right, a universal motor would be just as likely. In either case, input frequency would be somewhat irrelevant.

By the way, homeowner postings / consumer product postings are verbotten. Expect this thread to be bumped off.