DSH 624/07 Humidity test requirements

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IEC60335试验指甲

DSH 624/07 + I  L# s4 J) s

Humidity test requirements

Various

60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1 / O, o( {% [: w

Standard(s): IEC 60065/2001
A1/2005
* [& [# r. ?0 Q+ g$ d2 hIEC 60950-1/2005
IEC 60601-1/2005
% O4 P4 N# A8 K7 S) \/ PIEC 61010-1/2001
( E6 ?0 O/ Q" G" fIEC 60335-1/2001
, I( Y0 d5 @2 T. p6 eA1/2004
: X8 A4 c4 B# l% G$ J- ^A2/2006
2 l% g, N: u8 \9 S- F4 M' vSub clause(s): Various
8 Y4 O/ b& }$ P3 q1 ^Sheet N°: 624/07
CTL-WG4
& \+ C; t2 v0 o: i, r! g, D3 p6 p% WPage: 1(1)
Subject(s): Humidity test
requirements
Key words:
- 93% RH
- +/-3% RH tolerance
- 20 – 30°C
Meeting:
Decision confirmed
$ Q" h3 _3 F' v' c. P  W/ Uat 45th CTL meeting
+ N) `5 N! Y1 Z' l) D7 ~1 KQuestion: Various IEC standards have requirements for humidity/temperature
. p3 e% [/ J1 }/ h1 hconditioning, but have different specifications for the test conditions.
- s) y" p( s2 `2 r* gIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
: F+ r$ Z! S# dIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
. C3 n" C4 K; bIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
: S& W1 @. J9 |  RIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
" t- v. [: D: s4 p& Z9 s; v0 x: y: DIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
* q) {. `3 l% ?9 I# Z9 ]There does not seem to be a technical justification for the differences in the
specifications.
. c  e) n5 s$ e1 ^" {Accordingly, it is suggested and recommended that the humidity/temperature
% X9 i* ~; W  V$ C& r8 n5 H/ X8 ]specifications in the above standards be consistent.
& |/ L' |  C+ e8 B) j5 r! ODecision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
temperature between 20°C and 30°C, but the chosen temperature to be kept
. J( u5 `8 l  t* J4 u+ m# O& J. E7 bwithin +/- 2°C during the test.
4 @+ ~- Q/ m6 i9 x3 iThe standard specifications for the humidity are to be met at the
+ H  K) @3 b* ]) S+ H9 P$ \. G% e+ A, greference/measuring point, where the controlling humidity sensor is located.
7 H) V4 ~$ T' ^& g9 _The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
parts of the humidity chamber, away from the reference point.
; L8 y/ z3 `+ J6 b6 x* L1 ?. X
8 L3 t  F' A( \