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