Hi Scott:
The answer to your question:
“is it possible the V-0 material does not meet the needle-flame test?”
is: Yes. See:
https://www.caplinq.com/blog/ul-94v-certification-vs-ul-94-vtm-certification_190/
Best regards,
Rich
From: Scott Xe <scott...@gmail.com>
Sent: Tuesday, April 18, 2023 6:36 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Compliant needle-flame test material vs V-0 material
According to EN 62368-1 : 2020 + A11 : 2020 - Cl 6.4.8.4
Smaller distances are allowed provided that the part of the fire enclosure or
fire barrier within
the required separation distance complies with one of the following:
• the fire enclosure or fire barrier meets the needle-flame test
according to IEC 60695-11-5. Severities are identified in Clause S.2. After the
test, the fire enclosure or fire barrier material shall not have formed any
holes that are bigger than allowed in 6.4.8.3.3 or 6.4.8.3.4 as appropriate; or
• the fire enclosure is made of V-0 class material; or
• the fire barrier is made of V-0 class material or VTM-0 class
material.
The test house found that the fire enclosure material could not meet the
needle-flame test and considered non-compliance. However, the supplier claims
that the fire enclosure is made of V-0 material meeting the 2nd requirement.
Since the verification methods and conditions of needle-flame test and UL 94
are not identical, is it possible the V-0 material does not meet the
needle-flame test?
Thanks and regards,
Scott
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