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标题: DSH 624/07 Humidity test requirements [打印本页]
作者: 小米    时间: 2012-11-6 14:16
标题: DSH 624/07 Humidity test requirements
DSH 624/07& I# v: j. U* G5 z
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Humidity test requirements. C+ U, w* w# o# \
Various& D2 w4 d8 L( X: p" h( q( T
60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1" ]' T# z1 Z1 E5 e5 I( S+ ~

( g9 U% D2 t' }Standard(s): IEC 60065/2001. ?0 I( c+ D9 [* r0 c% c9 c
A1/2005
/ V7 O* p1 \  i7 }% B+ u1 n$ `IEC 60950-1/2005: D5 K/ [( N: J9 x
IEC 60601-1/20057 E8 p1 y8 Z# K. i" t8 \
IEC 61010-1/20011 k$ P9 k" V5 f
IEC 60335-1/2001
5 A" J# X$ ?. n! s' wA1/2004( k! J/ ^8 r" L3 |0 K+ E
A2/2006
! d) V/ J3 E% u, b4 dSub clause(s): Various
' e7 T( K: }7 i. NSheet N°: 624/07% v7 L3 U4 t/ ?, q  W
CTL-WG4
4 o3 ?- U! D0 a. [) F; mPage: 1(1)7 P$ K; `. \: {
Subject(s): Humidity test7 F- h; R/ {/ O
requirements
% ^; ], M. Y. r5 k& k- ^# O: TKey words:$ C  J8 |5 B8 [# P! D
- 93% RH: z+ f" d* g  A) {! `. r
- +/-3% RH tolerance( X) I% g5 p' Q; v" m+ W) S( u5 o
- 20 – 30°C
. X  ^. D! n$ g0 hMeeting:
9 Q2 j' Z! a1 z; g. U. BDecision confirmed
  Q$ x9 g0 G1 }* R/ b& t3 {5 Fat 45th CTL meeting
; _( g8 Y- r# [0 V6 b; ~+ n" I4 d) v4 eQuestion: Various IEC standards have requirements for humidity/temperature) _' _% t; c  t) U
conditioning, but have different specifications for the test conditions.; a6 J: H/ C1 A2 I4 X
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
) i: |- ?1 [) A/ _IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C), K; y' j0 ~5 `# s6 l
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
/ v9 i7 r2 g5 zIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)) Y* R+ P) {+ J) ?  Z5 i2 R6 @. e
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
, W. U3 {6 I/ `: z' s: ZThere does not seem to be a technical justification for the differences in the
# x' ^2 C' R$ Q; q# pspecifications.( l; g1 i* q  V% V/ T4 V
Accordingly, it is suggested and recommended that the humidity/temperature+ r/ @2 s- i3 v3 t5 m8 w
specifications in the above standards be consistent.0 I4 Q! R+ ^+ ]& v% m1 w8 P
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
  G3 j; a# F2 L8 A3 A* Itemperature between 20°C and 30°C, but the chosen temperature to be kept8 O, |4 b/ h9 C( _. {
within +/- 2°C during the test.
- _0 O2 p& n4 p' ?) a! cThe standard specifications for the humidity are to be met at the; R, r5 [1 x  v$ y
reference/measuring point, where the controlling humidity sensor is located.
( `1 Y% |' ^# w( }The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
4 K/ ~% I3 c( A0 m' Tparts of the humidity chamber, away from the reference point.( I9 ^5 s6 _+ x0 z

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