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|  DSH 624/07
) P' \3 p7 t1 E5 J
0 L' l1 [. B7 |0 t( H. ~, W | Humidity test requirements# X/ K$ n! T. P D& O: J. Z
| Various0 y) c& ^9 T( Y4 O$ T2 K2 v9 @
| 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1: S0 j' E' Y6 w) _$ u# q/ U2 i
|
' d) r* M6 y6 O: E. S& a D/ b/ K* ZStandard(s): IEC 60065/2001: ~" h! ]# K$ s' _
A1/2005* n: r* ]* v4 d, J1 _8 X2 Q+ p0 {
IEC 60950-1/20051 l% B; x4 c$ z0 E$ u" @; r
IEC 60601-1/2005
& M" ]" v, J& z0 I6 _ RIEC 61010-1/2001
- t# _7 N- w0 ]2 t- G& l4 i5 sIEC 60335-1/20010 K4 T; n/ m# A5 A' Z7 c+ ~) r" C0 N
A1/20042 Z3 f2 V2 Q/ }2 b
A2/2006
* Q( |5 l) T. R- B5 HSub clause(s): Various
- a0 |' L+ k: N+ j( t! ySheet N°: 624/07$ F. d& ]8 D3 g. J4 q
CTL-WG42 _5 o/ g* U y( Z6 B1 Z
Page: 1(1)) F( T: X* f1 U" v E, C7 L+ J
Subject(s): Humidity test* o1 D$ g+ V5 r4 X5 e6 L
requirements
; X5 Q" n. A& Y$ x1 k5 E' v5 M0 J7 O" hKey words:4 R4 t; s0 Q0 G
- 93% RH& R# U5 T) H9 ?5 j1 x% I" L' b
- +/-3% RH tolerance
2 k1 Y ` Y5 O3 {0 P: o- k- 20 – 30°C
: X( K4 h; [1 g2 N# O/ DMeeting:, k- E q0 V/ ?& b% a5 m
Decision confirmed
M" x6 P4 I9 i8 I2 Tat 45th CTL meeting$ U: p8 _. {: @, R% M, p6 O
Question: Various IEC standards have requirements for humidity/temperature2 B9 P* |+ Q& K
conditioning, but have different specifications for the test conditions.
& l) Z d6 ]0 M* w0 cIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
- h$ W& \* V$ SIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C); R% O/ U D, }- I
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
! b" c1 T! c3 g8 b" jIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
. m5 o a% a5 C; z' T A+ ]IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
+ J$ o$ @0 Z: g- K8 IThere does not seem to be a technical justification for the differences in the
" |5 V6 j* G2 a8 r8 R% U: Jspecifications.
X/ Q% C1 p( D. u0 O% O# uAccordingly, it is suggested and recommended that the humidity/temperature) s' V2 N7 L; u# U: Y2 v
specifications in the above standards be consistent.& y7 i; x9 @, }1 M
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
" k2 r5 F2 J V5 K: B* i- Z6 Ytemperature between 20°C and 30°C, but the chosen temperature to be kept6 {1 y) D) J w0 G! z+ S) R
within +/- 2°C during the test.0 q0 r4 }6 G7 h0 b y; V- F1 N+ \1 s7 w
The standard specifications for the humidity are to be met at the3 R: Z' S4 V- A
reference/measuring point, where the controlling humidity sensor is located.$ U2 ^& M: u0 {/ V2 H
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
; K, ]. p) f! b2 [$ xparts of the humidity chamber, away from the reference point.8 s, ?: ^2 X, X- x& `
) i; `$ t) ^# d! d1 Z6 a% a |
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