It's slightly off topic, but I thought I would share this 
sign<https://1drv.ms/i/s!Ap8stJM0LsH4jQzsx7ADEQ09XOkH> from the days when you 
didn't want somebody to try to run their 25 Hz motor on a 60 Hz circuit.

Ted Eckert
Microsoft Corporation

The opinions expressed are my own and do not necessarily reflect those of my 
employer.

From: Pete Perkins [mailto:00000061f3f32d0c-dmarc-requ...@ieee.org]
Sent: Tuesday, September 27, 2016 11:03 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Using 60hz motors in 50hz countries


                Pleased to see the 3 Amigo's... er,  3 Brian's working thru 
this issue.  :>)

:>)     br,      Pete

Peter E Perkins, PE
Principal Product Safety & Regulatory Affairs Consultant
PO Box 23427
Tigard, ORe  97281-3427

503/452-1201

p.perk...@ieee.org<mailto:p.perk...@ieee.org>

From: Brian Gregory [mailto:brian_greg...@netzero.net]
Sent: Monday, September 26, 2016 9:23 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] Using 60hz motors in 50hz countries


The third Brian opines:   do what O'Connel says, then do a few tests, too!
Adjust load ratings for 50 Hz if necessary...

Brian Gregory
720-450-4933


---------- Original Message ----------
From: "Brian O'Connell" 
<oconne...@tamuracorp.com<mailto:oconne...@tamuracorp.com>>
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] Using 60hz motors in 50hz countries
Date: Mon, 26 Sep 2016 17:36:38 +0000

How components are used cannot be controlled by manufacturer, so your due 
diligence is to ship each unit with conditions of acceptability and 
install/operate instructions that are scoped per the standards that would apply 
to the component and to the end-use equipment. Carefully control what is on 
your website and what your sales peoples say to customer.

If a buyer or designer asks you about a use not within the nameplate ratings or 
instructions, the legally correct response is the unit has been assessed for 
use at the following operating conditions... blah.

There are other things that can be said or done, but your risk increases. Do 
not offer 'probably will' advice unless you have empirical test data supporting 
those operating conditions; and never admit that you have test data for 
operations outside of the unit's ratings.

Brian


-----Original Message-----
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Monday, September 26, 2016 7:39 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: [PSES] Using 60hz motors in 50hz countries

Dear experts,

Can AC brushless motors (in this case 230V~ 3-phase 3hp motors) that are rated 
"60HZ" be used in products going to countries that have 50HZ power?  I believe 
the motors will run a little slower which will not affect the function of the 
product, but is there a safety issue with this?  The motors are thermally, 
overload, and short circuit protected.  They are "intermittent use" and not 
likely to overheat.

As a rule, we only market and sell such products to countries with 60hz power. 
However, a North America company might purchase one and ship it to one of their 
international locations with 50hz power without our knowledge. Do we need to be 
concerned about this?

Of course, this fact has our sales force wondering if it is OK to market and 
sell 60hz motor driven products in countries with 50hz.  I really don't know. I 
cannot see a safety issue but one can say that the motor would be used in a way 
it is not intended to be used resulting in a higher risk if something did 
happening.

Any opinions on this?

Thanks,
The Other Brian


________________________________

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