Rich,
UL's definition of "continuous" is that 240VA is available after one
minute.
Also, in the notes for Tables 725-31(a) and (b) of the NEC define
VA(max) as the maximum volt-ampere output after one minute of
operation...
Best Regards,
Kendall Wilcox
[email protected]
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Subject: How long for continuous?
Author: Rich Nute <[email protected]> at SMTP-MAIL
List-Post: [email protected]
Date: 11/12/96 7:25 PM
Hello from San Diego:
With regard to IEC 950:
...........................................................
1.2.8.7 HAZARDOUS ENERGY LEVEL: A stored energy level of
20 J or more, or an available continuous power level of 240
VA or more, at a potential of 2 V or more.
...........................................................
At what point in time after start of the measurement is the
available power considered "continuous"?
In the application, a fuse is used to limit the continuous
power to less than 240 VA. At 240 VA, the fuse WILL operate --
but it may take up to the maximum fuse operating time.
Is this okay?
If not, what is the time after which 240 VA is considered to
be continuous?
Best regards,
Rich
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Richard Nute Quality Department
Hewlett-Packard Company Product Regulations Group
San Diego Division (SDD) Tel : 619 655 3329
16399 West Bernardo Drive FAX : 619 655 4979
San Diego, California 92127 e-mail: [email protected]
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