I have a client who has installed a COTS UPS in an industrial control panel. 
The UPS is being used to keep the HMI alive in a power outage or if the 
disconnecting device is switched off.

I have scoured the resources that I have, and I can find nothing that requires 
a label on the outside of the panel to indicate that there is a UPS inside. EN 
60204-1:2018 does not address this. I have a copy of EN IEC 62040-1, and it 
does not require a hazard warning label anywhere.

Any guidance you might offer is appreciated.

Doug Nix
+1 (519) 729-5704

This message is from the IEEE Product Safety Engineering Society emc-pstc 
discussion list. To post a message to the list, send your e-mail to 

All emc-pstc postings are archived and searchable on the web at:

Instructions: (including how to 
List rules:

For help, send mail to the list administrators:
Mike Sherman at:
Rick Linford at:

For policy questions, send mail to:
Jim Bacher:  <>
To unsubscribe from the EMC-PSTC list, click the following link:

Reply via email to