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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
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Humidity test requirements0 s: {* j9 O- `! ~0 ^+ Z# Z
Various
2 h! z. B4 w8 F8 B' A" [0 `! j0 |		60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1. z) T) U% A  T2 {5 \

6 F9 O9 U4 w6 t! n% ?1 H% z; tStandard(s): IEC 60065/2001
) W, p$ L% W) L' IA1/2005  O  O8 d3 ?  Y0 I
IEC 60950-1/2005
+ {7 Y5 M. z$ A* X( g1 O7 Y- GIEC 60601-1/2005
1 W# \8 X$ e8 W9 J8 V. e. H' jIEC 61010-1/20016 z5 L" {6 b9 [6 b' p
IEC 60335-1/2001
" _+ U( r4 e' y) b# n8 ~- qA1/2004$ @+ {+ W( _( n
A2/2006. j& G6 g6 N# U( w
Sub clause(s): Various
. A- n( ~7 @2 jSheet N°: 624/07- q5 L3 t  f! a5 o& t" h
CTL-WG4' [7 L. o2 [  O& h
Page: 1(1)* z  ?8 p7 N$ x; ~" ?
Subject(s): Humidity test
' ]& c/ A3 a, J& N; `4 ]# j  C( T' trequirements: b9 }5 s7 }% J# p! Y
Key words:8 }& P! |8 E/ Q: _
- 93% RH# M' W8 \5 z% I% d4 @( S" a. d
- +/-3% RH tolerance- c  u) x  H& t9 x- ?4 R( S
- 20 – 30°C6 Y$ j7 D: U% ~; M, ~
Meeting:
$ N7 Y* P, W+ K4 h" L% gDecision confirmed
+ g, r  J/ W. C1 ~$ G7 o7 A; q7 Uat 45th CTL meeting
& n- |( j3 j( X4 ]+ y/ FQuestion: Various IEC standards have requirements for humidity/temperature( l/ K( a6 n% J% K( v/ L% H
conditioning, but have different specifications for the test conditions.% z. l6 a4 P2 c, _8 g) g. V. |
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
& u5 R2 |6 k' f+ a* {% aIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
6 N5 b) y- e2 ]7 l. F% r0 q1 AIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
5 ~( ^1 b0 t7 N) o5 ?. A  a" b* CIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)9 r2 U' b! a  D, |6 R; m3 g
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)$ P6 I. }( P/ o3 K
There does not seem to be a technical justification for the differences in the
2 g0 R% ]5 s5 |/ Z  l2 X1 e; Yspecifications.; l  C2 D* O7 k1 u9 g3 P
Accordingly, it is suggested and recommended that the humidity/temperature, O3 ^4 U. s2 e; X1 D  s
specifications in the above standards be consistent.# r% C. n# |' n/ N% y. Y$ i
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
+ i) m1 F* A( {2 u8 M! ntemperature between 20°C and 30°C, but the chosen temperature to be kept* u- O5 [- x- A' g( \
within +/- 2°C during the test.  T& E3 e8 |) R; v$ N3 g
The standard specifications for the humidity are to be met at the' Y) k3 `1 f$ _& e
reference/measuring point, where the controlling humidity sensor is located.
% q1 |% @8 s& m' o$ o2 NThe tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
1 _+ [5 Q9 I8 t7 U" aparts of the humidity chamber, away from the reference point.
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