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sunny.yang 发表于 2019-6-25 16:209 f& C! H- Y, ~8 ~% X/ |
这里不是说V-1 可以吗 j: I9 m; s1 S/ Z6 |8 u/ O/ M! b
comply with the following flammability requirements:& @, t: U% P7 w9 J( W
requirements of the re ...
8 p$ {4 [0 B, T2 B2 ?& bV-1是有前提条件的。距离需要满足。4 ^" M, P: I/ t8 |' k" S8 H7 x
6.4.8.4 Separation of a PIS from a fire enclosure and a fire barrier
. r+ o! ^& B8 ^0 aA fire enclosure or fire barrier made of combustible material shall:
3 y; l# y- P) b" {/ b1 N– have a minimum distance of 13 mm to an arcing PIS; and
3 x) {7 d$ K' E% h– have a minimum distance of 5 mm to a resistive PIS.9 a5 i% z0 M0 N8 k: V
Smaller distances are allowed provided that the part of the fire enclosure or fire barrier within! o8 S+ V5 c1 w' I4 [
the required separation distance complies with one of the following:' J, h( C+ n5 z* s
– the fire enclosure or fire barrier meets the needle-flame test according to$ [( f$ }& E9 Y4 b, @0 ] B$ @
IEC 60695-11-5. Severities are identified in Clause S.2. After the test, the fire enclosure
) A$ J7 G i" i2 _" }or fire barrier material shall not have formed any holes that are bigger than allowed in& G+ l% U4 J# ~
6.4.8.3.3 or 6.4.8.3.4 as appropriate; or0 G; h4 a: F! N' Q* u) v
– the fire enclosure or fire barrier is made of V-0 class material. |
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