Wouldn't this fall under the requirement from 60204-1 clause 5.3.5 for Excepted 
Circuits?
"Permanent warning label(s) shall be appropriately placed in proximity to the 
operating means of the supply disconnecting device to draw attention to the 
hazard"

Best regards,

Mark Stultz | CMSE(r) | Sealed Air | AUTOBAG(r) brand Equipment | Streetsboro, 
OH | 330-342-2402

From: Doug Nix <[email protected]>
Sent: Wednesday, August 2, 2023 5:24 PM
To: [email protected]
Subject: [PSES] Hazard warning labels on panel doors where COTS UPS installed?


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Colleagues,

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
[email protected]<mailto:[email protected]>
+1 (519) 729-5704

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