UL requires us to apply a 'UPS Voltage Present When Off' label for UL 508A mobile carts we build with a UPS installed. Inspector considers it a safety violation if the label is not on the access panel or door.
John
-----Original Message-----
From: Ralph McDiarmid <[email protected]>
Sent: Thursday, August 3, 2023 13:26
To: [email protected]
Subject: Re: [PSES] Hazard warning labels on panel doors where COTS UPS installed?
CAUTION: This message originated from outside Strongarm. Do not open attachments or click on links if you do not recognize the sender.
Doug, a quick search through NFPA70 (USA national electrical code) says in article 645 Information Technology Equipment:
645.16 Marking. Each unit of an information technology system supplied by a branch circuit shall be provided with a manufacturer's nameplate, which shall also include the input power requirements for voltage, frequency, and maximum rated load in amperes.
I endorse John Woodgate's answer; if in doubt, label it.
I'm delighted to see a few familiar names after my long hiatus from this
forum. I'm now semi-retired from the industry.
Ralph
From: Doug Nix <[email protected]>
Sent: Wednesday, August 2, 2023 2:24 PM
To: [email protected]
Subject: [PSES] Hazard warning labels on panel doors where COTS UPS installed?
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
mailto:[email protected]
+1 (519) 729-5704
________________________________________
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John
| John Cochran Compliance Manager [email protected] Industrial workstations and mountings for the frontline workforce. Strongarm Designs, Inc. 425 Caredean Drive | Horsham, PA 19044 (800) 778-7901 • strongarm.com |
-----Original Message-----
From: Ralph McDiarmid <[email protected]>
Sent: Thursday, August 3, 2023 13:26
To: [email protected]
Subject: Re: [PSES] Hazard warning labels on panel doors where COTS UPS installed?
CAUTION: This message originated from outside Strongarm. Do not open attachments or click on links if you do not recognize the sender.
Doug, a quick search through NFPA70 (USA national electrical code) says in article 645 Information Technology Equipment:
645.16 Marking. Each unit of an information technology system supplied by a branch circuit shall be provided with a manufacturer's nameplate, which shall also include the input power requirements for voltage, frequency, and maximum rated load in amperes.
I endorse John Woodgate's answer; if in doubt, label it.
I'm delighted to see a few familiar names after my long hiatus from this
forum. I'm now semi-retired from the industry.
Ralph
From: Doug Nix <[email protected]>
Sent: Wednesday, August 2, 2023 2:24 PM
To: [email protected]
Subject: [PSES] Hazard warning labels on panel doors where COTS UPS installed?
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
mailto:[email protected]
+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:
https://www.mail-archive.com/[email protected]/
Website: https://ewh.ieee.org/soc/pses/
Instructions: https://ewh.ieee.org/soc/pses/list.html
List rules: https://ewh.ieee.org/soc/pses/listrules.html
For help, send mail to the list administrators:
Mike Sherman at: mailto:[email protected] Rick Linford at: mailto:[email protected] For policy questions, send mail to:
Jim Bacher at: mailto:[email protected]
________________________________________
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https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
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----------------------------------------------------------------
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 <[email protected]>
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Rick Linford at: [email protected]
For policy questions, send mail to:
Jim Bacher: <[email protected]>
_________________________________________________
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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
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List rules: https://ewh.ieee.org/soc/pses/listrules.html
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