Hi, Group,

I have aquestion. When one equipment have two power input which one can power
for the equipment and one is only for backup, how to mark the power rating?  

Method 1: mark the power input rating(“ 100-240VAC;5A;50/60Hz”)near
each power input and describe “ 100-240VAC;5A;50/60Hz ×2” in the CB
report. 

Method 2: mark the power input rating(“ 100-240VAC;5A;50/60Hz”)near
each power input and describe “ 100-240VAC;5A;50/60Hz ” in the CB report. 

Method 3: mark the power input rating(“ 100-240VAC;5A;50/60Hz”)near
each power input and describe “ 100-240VAC;10A;50/60Hz ” in the CB report 

what method is correct?

Is rating label required for the whole equipment? if yes, how to mark the
power rating in the label in this case?

If this equipment can be powered by DC (if the built-in power supply is AC/DC
the equipment is AC type, if the built-in power supply is DC/DC the equipment
is DC type), do you think different label is required for AC type and DC type? 

Can I use only one label and don’t reflect the information of power input in
this label, the information of power input is only near each power input?  can
I describe “100-240VAC;5A;50/60Hz ×2  or  -48--60VDC;2A ×2” in the CB
report?

 
 
Zhang Guoqing
Safety Lab.
Huawei Technologies CO.,LTD.  P.R. CHINA
[email protected]
Tel: +86-755-28783064


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