U.S. DOE 430 has the test method, which is cited for ErP stuff. 'VI' has lower 
standby and higher efficiency per MEPS limits than 'V'.

Back to the OP. Type test conditions for ac mains input; that is, mains 
tolerances follow.

IEC61010-1, IEC60601-1 (Cat II), IEC62368-1    ±10% of rating

UL1012, UL5085, CSA66.x, CSA107.1, UL1741   120V for any rating up to 120V, 
240V for rating 220 to 240V, and others per clause 39

CSA250.13 +10% rating

Klingon 60950-1.1   any random voltage from 42V to 1500V

Brian


From: Richard Nute [mailto:ri...@ieee.org] 
Sent: Wednesday, April 12, 2017 12:00 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Voltage Rating vs Voltage Specification


Hi Scott:  

Thanks for the reference.  However,

“This mark does not serve as a consumer information label, but rather 
demonstrates the performance of the EPS when tested to the internationally 
supported test methods.”

Hmm.  If the mark does not serve as a consumer information label, who is it 
for?  Bragging mark (to other power supply manufacturers)?  

My power supply is marked “V.”  This appears to be more stringent than “VI.”  
True?

Best regards,
Still cynical Rich



From: Scott Aldous [mailto:00000220f70c299a-dmarc-requ...@ieee.org] 
Sent: Wednesday, April 12, 2017 10:53 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Voltage Rating vs Voltage Specification

It is an efficiency marking for external power supplies. Current US requirement 
is level VI. You can download more info from the DOE here.

On Wed, Apr 12, 2017 at 10:31 AM, John Woodgate <jmw1...@btinternet.com> wrote:
What does the letter V in a circle mean?
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