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|  DSH 385) H* P8 o. M& N Q8 N* B5 \7 @
2 F9 d; W# I# A3 u. a: p$ i2 V/ M5 K: K9 T4 L/ n
| Flammability of materials and components
: W" ?) A4 ^' w' } c; j9 F4 H- Z/ N | 4.4.3% Z& \, w3 y: j$ U# y$ G! z
| 60950(ed.2)
$ P* Q, R- {" D$ }# K% ^ |
' x- d$ t* |3 [# W4 ~ w4 EStandard:
% s: H2 g4 E& N% x! CIEC60950, 2nd Edition. c# n0 {0 e5 Q' y
Sub clause:
+ E( x' A* `/ n& S4.4.3
, E* Q. K, \' V) ySheet n. 385
2 n4 J) B( e/ }. V8 U; jPage 1 (1), A* E- E/ o, r* V
Subject:
0 ?8 l* u4 D' O( KFlammability of materials and
+ [( Q# v- E1 U0 Y7 scomponents% L7 G* N/ ^( n! W) u
Key words:
$ W4 k. [* G# {- m-Fire enclosure& f! g, V* J! z0 ]8 a5 i
-Flammability
% f# Y( M4 m+ R! cDecision confirmed N1 t- ~( Y( K+ R" Y6 Z3 G" K
at CTL 38th meeting
3 \2 t. s2 p9 M% E. O% [/ ?Question:4 W$ u1 R) H* g4 o) z+ C& y
It is allowed to add decorative parts with flammability class HB to the outside of the fire1 { O; D. D( f% \- z
enclosure of, for example, a computer. Consider the situation that the computer is, then,
2 v3 G9 G5 U% w3 winstalled inside the fire enclosure of bigger equipment. According to the standard, parts7 z/ j: X) D5 m
inside a fire enclosure of the bigger equipment must meet the requirements of clauses 4.4.3.2# a* [9 ]3 ?7 a( a. l( {# m
and 4.4.3.3: all materials inside a fire enclosure must be of flammability class min V-2 or6 P* C7 P3 k- p; d
HF-2. It is not clear whether the decorative HB material on the outside of the computer is) U9 d$ [# ?2 U0 }. j
exempted from this requirement since the computer has been approved separately
7 h; Z! V. h) j# ^: o2 N; _( oDecision:
9 b: }+ [' b, Y iHB material inside a fire enclosure is not allowed, reference clause 4.7.3.4 in the 3rd ed.
2 ?/ I; o, ?( y+ l3 A6 F7 I
`( a& B; ~% I4 S. E
7 X" k; k7 R: ^! Y |
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