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|  DSH 624/07& a b- m0 J; H8 @: k
+ J7 V% p% Y( m. [: e | Humidity test requirements
" K8 P ]. p$ F+ F7 ~4 x+ V9 g s | Various, o) l7 n) G8 G
| 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1
8 C. v* v, O- ` |
" R. M% D8 ~& a# U5 _" WStandard(s): IEC 60065/2001- D) Z5 S. Y& I
A1/2005- z/ W& g' V# m3 d2 V/ E
IEC 60950-1/2005' c2 s: t2 W7 P, m
IEC 60601-1/2005
4 p& J, |6 e4 O+ @9 i; }IEC 61010-1/2001
! X9 g4 Z0 b# o. k7 z/ iIEC 60335-1/2001( Z |" z* f4 |2 R7 D/ j
A1/2004- k/ j! u; z. a, I" ?* R, V4 A- L
A2/2006
* K1 \; T" @0 d& N( Q3 I, lSub clause(s): Various
- _' V. k' f9 hSheet N°: 624/07
+ p# a- a: b* x) lCTL-WG4* ?' i# M6 S$ L5 X' }) v0 Y! l' K
Page: 1(1)8 ], v( k2 J2 [5 r
Subject(s): Humidity test
+ [/ k |" y9 a7 s8 B7 qrequirements( C2 X' ]1 T) e
Key words:
, y1 n- z; U& ]% o# ^- 93% RH3 {( t7 A' a$ H) B* @3 y2 n
- +/-3% RH tolerance
! T2 H5 ?' a$ y+ G3 E- 20 – 30°C
8 y- p Y) s, g; i; NMeeting:
) q+ J+ o; `. N- k0 m0 JDecision confirmed% v: v: s0 X( r8 f4 m8 o4 M3 W
at 45th CTL meeting7 w: l/ Y: `! I2 @
Question: Various IEC standards have requirements for humidity/temperature& p8 M$ s+ H7 V2 G/ W3 \ u. m) D
conditioning, but have different specifications for the test conditions.' K8 q3 {& H3 q3 s6 u" t
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)9 p8 X0 e* k- `6 l
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
) s/ y3 n" P0 d/ h4 R% {/ cIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
! {8 ~* \0 ]! s* f. S+ OIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C); \$ `7 o3 v7 c8 m x
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C) q2 G- J) M% [ C
There does not seem to be a technical justification for the differences in the, J$ ~$ u2 B8 b2 m) \* Q3 w* z& A
specifications.
. V# D" p' g/ e k: s' z7 Z5 nAccordingly, it is suggested and recommended that the humidity/temperature/ T& Y# O9 X7 h( w- Y) F& }6 t
specifications in the above standards be consistent.
7 j8 g* O' D6 R: YDecision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient7 m" Y3 Z3 l% v' g
temperature between 20°C and 30°C, but the chosen temperature to be kept5 ]' `' x7 t3 V4 u$ c
within +/- 2°C during the test.
& K7 k" i4 l% e1 m$ OThe standard specifications for the humidity are to be met at the& ~3 C( A" Z0 e ?: {
reference/measuring point, where the controlling humidity sensor is located.5 _5 I2 Z8 g% m4 ^, ]& ]7 W: J5 s
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other) f" K- t7 `- } S) s0 N9 I* v
parts of the humidity chamber, away from the reference point.% d) ?' T/ z% i5 j3 o! W8 }& U
' u* Z b1 P. B5 w* m! a
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