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|  DSH 624/07
/ @5 b: ?0 n$ o3 M! a$ [0 X1 B+ S/ Z
| Humidity test requirements4 X$ s s; ^: s: `! A
| Various
2 O2 ]% o Y: F& X7 S | 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1, y& u" V9 N* L" S
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4 G0 C* v% [ Z8 a8 d$ v
Standard(s): IEC 60065/2001, g* y! j! p9 m8 @+ S8 J8 i+ r" _
A1/20059 i7 o+ S% L- `" n5 y" q' j
IEC 60950-1/2005
' R, H2 M8 S! ^; xIEC 60601-1/2005. k+ B& a9 X0 G( x5 d
IEC 61010-1/2001
1 Y5 I$ ]; X D! X. bIEC 60335-1/2001& \2 Z" o. m9 R7 E0 C* c* z+ \
A1/20041 S( d, ?! S/ n6 I6 l
A2/2006
1 W& e; x, u4 USub clause(s): Various4 k/ ?; d6 {# I# m3 A" z
Sheet N°: 624/072 i" F: F6 P; }% O `" _. l
CTL-WG4
( G/ z& _6 O ~/ J9 ]% E! fPage: 1(1)3 P; ?. n3 y& Y/ i+ c$ G1 a
Subject(s): Humidity test
1 Q1 u3 V. K, d7 r5 nrequirements4 s" j2 t, j8 g7 y+ z/ J$ [
Key words:
' S( ~; u. ~3 @- T9 G& H; Q$ a- 93% RH
7 d4 G+ O; m# G9 ]) F( p" K- +/-3% RH tolerance' g5 _. d; p1 K# z
- 20 – 30°C
' Y# y# c0 V: z O1 o9 YMeeting:+ S: M9 M+ p u( F9 ?3 I
Decision confirmed
( ?9 R7 z( x2 y3 q8 [at 45th CTL meeting
: t0 G! h+ _- H: L+ mQuestion: Various IEC standards have requirements for humidity/temperature9 V K* S- L; I, K% I( H; G
conditioning, but have different specifications for the test conditions.
( [+ f! h v7 I3 \2 q5 iIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
& f* `3 ~% {% x, K8 SIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)- O$ g& P& S; c' {
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
, u& d& x6 U3 I! A. vIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)' B9 k% B" S9 f2 t# i
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
* I% E Y. A2 [; c: y) b& {1 h0 fThere does not seem to be a technical justification for the differences in the
8 {" Z# p6 }. Y D& ospecifications.
/ q; ]2 _ {9 _7 n$ AAccordingly, it is suggested and recommended that the humidity/temperature. Q, q" B9 i' J/ T/ h( n
specifications in the above standards be consistent. M% @6 s& V1 D5 g9 g5 X8 i- ^! _9 P
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient3 w6 M/ |1 a! x
temperature between 20°C and 30°C, but the chosen temperature to be kept, a/ l# W7 [# A( V7 {
within +/- 2°C during the test.
1 X+ V* v( E x: g* J& l! T4 @The standard specifications for the humidity are to be met at the2 X- C* B& ?2 z- Z9 u2 y
reference/measuring point, where the controlling humidity sensor is located.
: r% ]* h: l" ~) }! c: @7 N' gThe tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
* @1 j! }3 G% z& N& i8 Dparts of the humidity chamber, away from the reference point." s0 f+ t7 x, C
0 y+ c! E/ A! d
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