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|  DSH 624/07
% P8 h8 t. v" d$ K: F6 \. P0 l5 e$ O
| Humidity test requirements
: ]% b y9 T. C1 J" H" C. m | Various& P& p6 [ \6 v+ o$ N( X
| 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1/ q0 ^7 [% ]5 T
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& S" O$ i t4 d% Z$ |9 B
Standard(s): IEC 60065/2001: C4 P# k/ |' Z9 O
A1/2005
8 [1 q7 g! c, N) e% F& I8 CIEC 60950-1/2005& O: v; _6 _5 u) p& z/ v. o
IEC 60601-1/20054 J1 D# a$ `! a1 c6 o* M
IEC 61010-1/2001
$ }4 A, H0 i a0 R, W0 |IEC 60335-1/20011 f6 n! N8 r: F, T$ l6 }9 C% V
A1/2004) v- g9 y6 E4 L8 Y: z/ i
A2/2006: P* c C/ C+ X/ O
Sub clause(s): Various5 E! J% |6 B7 f% H3 G
Sheet N°: 624/07/ v9 [8 c: P- C
CTL-WG4
% N0 `5 K- U( u: VPage: 1(1)8 O* K9 }/ G6 O% \
Subject(s): Humidity test
1 ]- F2 _3 `. l8 S( Nrequirements' c, q. A- }$ b9 c9 B8 q' k( v
Key words:( G- ]" H @+ ?9 s1 w, K
- 93% RH3 h7 C: A6 q* h4 `3 p
- +/-3% RH tolerance5 n4 Q. \# O0 O; C
- 20 – 30°C5 |# \; Q4 `( K0 y' y% O
Meeting:1 G5 L# a; |) T$ i! |
Decision confirmed
4 k2 E V4 B+ U5 |& ?, l0 c) dat 45th CTL meeting
7 x0 P! M. I; iQuestion: Various IEC standards have requirements for humidity/temperature- ?$ o k4 y/ V# s) ~4 J& J
conditioning, but have different specifications for the test conditions.
1 Q8 g3 h7 s. ~% mIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
9 h3 G- G* f! r& nIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
& ~" b2 B* q/ @# v/ @* VIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
/ n0 l: J' n6 x3 z0 N- f/ WIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
- E0 L- L3 H2 b4 TIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
5 r k! g+ g2 ]: h3 }# Q0 A& XThere does not seem to be a technical justification for the differences in the5 R# E. n) ^ j8 Z& p
specifications.6 I0 h/ l- o* m
Accordingly, it is suggested and recommended that the humidity/temperature& U8 T% L( g: V5 L# b
specifications in the above standards be consistent.
8 ]+ i. ` S& z% {+ b. ^Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
1 V) J& h1 a, V3 L% z' Ftemperature between 20°C and 30°C, but the chosen temperature to be kept
) z( ~- V' B4 K& P- awithin +/- 2°C during the test.
& W. O: \# G" t% G& w KThe standard specifications for the humidity are to be met at the' ^7 S* e8 w. i. P, {2 W* c. X% }
reference/measuring point, where the controlling humidity sensor is located.
|3 h# s8 K: wThe tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other! ?' q. f e* v! b6 M% x4 u
parts of the humidity chamber, away from the reference point.+ ~- k4 {; \- P2 p3 j$ g4 e
7 }& M; E$ V0 D. {1 y
& [8 ] [3 K! `( q/ Q5 M7 \8 R5 c |
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