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4 c" X: Z9 h; H5 [& J9 y3 V
4 A6 F# G* M* v# I& n g- l | Humidity test requirements2 H1 `: ^4 S6 r
| Various2 a. e, P# ?& d
| 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am12 A& P# \, i, d) w, J$ l
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# Q" l M5 M! _1 A* m
; f' O; [4 J2 i& s# M/ U9 HStandard(s): IEC 60065/2001
* c w; i, G6 L ~. RA1/2005! W2 H3 ` v$ Y: {* L9 M
IEC 60950-1/2005+ h" s' Y. }* o
IEC 60601-1/20059 i: ?2 N! Q8 y) G. o/ O+ ~, V
IEC 61010-1/2001
Q7 W9 e: j9 x( F1 \IEC 60335-1/2001
6 b2 X: G) G6 ~: j3 NA1/2004) t- o8 v( l+ ^% }" t' |* L
A2/2006
$ O7 s: v) X( z5 Q8 F. h# z6 `Sub clause(s): Various
7 ]0 d& c0 A* _+ F6 TSheet N°: 624/078 L4 ]/ q9 f, z/ J
CTL-WG4' a* Q o0 l3 u5 ~8 r& w3 `
Page: 1(1)' l0 }& `* b' E+ }/ ^
Subject(s): Humidity test
( `$ z6 h: @& @' ^. urequirements
# P$ Z6 F" D4 m6 J/ g2 NKey words:
" m; x+ p* U1 G1 k& [. i- 93% RH1 m% y$ `1 J! `4 K- p
- +/-3% RH tolerance
7 \/ o/ C* G5 p" ], V- 20 – 30°C- M- I; A6 B# u* C0 x0 I
Meeting:1 S7 n6 V% u8 g$ N
Decision confirmed
9 ^# A( C$ E gat 45th CTL meeting- g0 a( I* K) m8 j$ \6 z
Question: Various IEC standards have requirements for humidity/temperature( W* _- ]( ~/ o+ G
conditioning, but have different specifications for the test conditions.
0 U" @6 q* |' D, f7 U- ?IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C) K1 X, I: I2 s( c% E |1 ^: g1 i
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C): W+ r3 C5 }, X# d5 M$ ?
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
9 ^( ]- J; E% n$ j6 e- ~/ U, }+ bIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)6 O. G6 ~# S+ u. A4 C" u6 o
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)4 a1 k# h h# s7 q( l6 g
There does not seem to be a technical justification for the differences in the! M- c& V! M; G
specifications.+ Q, C& J5 s( S$ ]9 ^) d/ K
Accordingly, it is suggested and recommended that the humidity/temperature
9 {9 F7 |) l4 @: q1 C( i( I* S; dspecifications in the above standards be consistent.
) i R1 |. a( o3 A; ]Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
4 ^9 J7 u1 i! ~temperature between 20°C and 30°C, but the chosen temperature to be kept( a. ~ C9 J1 t: \5 [8 W' a5 T/ D7 \/ x/ G
within +/- 2°C during the test.
1 Z2 T$ ~1 S7 D; n' d3 bThe standard specifications for the humidity are to be met at the
! X4 ~) x0 _& @( M- z( F4 Q" ]( Hreference/measuring point, where the controlling humidity sensor is located.% f( R. q- `& I- |/ ?% n7 W* u* L
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
$ q1 ?( u4 X; r4 ~6 H1 Aparts of the humidity chamber, away from the reference point.
8 k6 ?: R% Q( c* N5 o; b) b4 I0 x2 V, k, y9 ^. S
# y! z& \& k1 u8 I" U: f! m& B2 V2 R: V, N) g
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