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|  DSH 624/070 p- f* [$ B2 Y
* k2 h% U5 Y9 S: Y5 N
| Humidity test requirements
7 _7 b* T" n. x7 Q" Q4 M | Various
6 h; {1 M- \4 {5 n | 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1
2 S% u# [* Y5 C; G! z# }3 e |
! h1 I6 s3 _1 @0 ~Standard(s): IEC 60065/2001
& M6 r, `. I" ~6 K5 iA1/2005- H0 f! \8 z/ w; `' H- H
IEC 60950-1/2005" R7 D" E8 _7 R4 U5 W+ y
IEC 60601-1/2005) q& O* \) R3 Z' }% N: _
IEC 61010-1/20015 ~9 n& r+ l0 N% d- @) q
IEC 60335-1/2001
1 Q& U% _- o: o! E1 tA1/2004& X% X4 x5 H! o& y6 t3 q% c% D) m
A2/2006/ }$ P. M$ U/ \, g
Sub clause(s): Various
7 o' u% U4 ]# F) a( h7 ^8 n W. qSheet N°: 624/07* E0 O. N2 G- j7 t+ i
CTL-WG43 X: g0 ]& f `! B' R) Z
Page: 1(1)
. z" S9 Q4 C h) G) aSubject(s): Humidity test7 ~0 A t7 y( c2 M7 b; s2 R; e
requirements2 T: D$ P9 @6 y& l
Key words:
- x8 S: o* x. S0 L+ M1 E7 q% f- 93% RH0 W8 V) o' Z, c( m; K2 a
- +/-3% RH tolerance
0 ^4 C& |, P+ N4 W- 20 – 30°C! \ }. o) j5 D$ V; ?; i$ @% [9 L
Meeting:9 f6 P5 w. ^; r! B2 R u: L1 F; ^
Decision confirmed
: D* s& E/ {/ u# x1 Uat 45th CTL meeting
; m0 e1 Q1 R; Y6 | I! h* J+ ^Question: Various IEC standards have requirements for humidity/temperature
$ @- J- K5 Z# g7 B7 mconditioning, but have different specifications for the test conditions./ e1 X) D: ?* g' {
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)% `9 d7 Q9 r) Q8 N e/ y
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
8 x# Z' W- g9 A2 S! dIEC 60601-1 – 93 + 3%/-3% (t 20-30°C). c9 M% U* }. ?
IEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C): Z. P6 k" L8 G. l! j. ]' y/ i
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C). M, n" _, g6 y, Y1 B
There does not seem to be a technical justification for the differences in the
4 |3 i9 n* T' a. N! ~specifications., [; V0 P' G9 |+ P8 |$ d
Accordingly, it is suggested and recommended that the humidity/temperature8 E% \; N1 H1 k! y3 P6 T
specifications in the above standards be consistent.
9 e1 E7 F. q, c8 P: v0 ~Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient7 W k; j; M5 Z6 V; A
temperature between 20°C and 30°C, but the chosen temperature to be kept
9 |# G0 ?7 T5 S: q! [within +/- 2°C during the test.
# l. h3 l$ I4 A2 g. M, g1 ]; R: b5 \The standard specifications for the humidity are to be met at the
{ s6 Z: D, h3 ^8 ^7 Hreference/measuring point, where the controlling humidity sensor is located.6 y4 g* B* N1 q2 ?
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other* B3 s5 T. B2 _' O# X
parts of the humidity chamber, away from the reference point.
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