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标题: DSH 624/07 Humidity test requirements [打印本页]
作者: 小米    时间: 2012-11-8 17:09
标题: DSH 624/07 Humidity test requirements
DSH 624/074 X/ m( m4 e# Z  x
" [% U- `" N: f, L) R/ b
Humidity test requirements) f, ^; o/ R1 d* S" q9 H
Various6 x& @; v' O2 P2 ?8 Z) o2 J! J; ]
60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am16 q; v  m5 O$ S0 @1 k0 e  n

" E- [* W5 x+ yStandard(s): IEC 60065/2001
. m. E9 c3 y1 o9 ?3 L4 J3 aA1/2005) M9 S, C; A8 O
IEC 60950-1/2005
$ G) b  w% Q( D0 s+ RIEC 60601-1/2005
  e5 e' }" U" `* I4 d2 fIEC 61010-1/2001
1 m: m0 f3 R  j; O. }& vIEC 60335-1/2001
$ Q1 r5 j* Q) n' n& p) w- fA1/2004
% x/ w) @8 K+ h/ \* R; TA2/2006
' U& h; ^$ H  Z/ l% {Sub clause(s): Various
3 D# L3 J, g8 S5 lSheet N°: 624/07) y, u/ o8 k; D& t6 y* ~5 L
CTL-WG4! M4 d) H8 X3 O; w( @6 w
Page: 1(1)
2 U3 ~; L: h* \' f. {' z3 cSubject(s): Humidity test1 S" Z9 T" q8 o) j, q
requirements
3 o1 r  B5 @6 L% n! y' s% NKey words:- h0 _4 q5 ?- p" G1 L
- 93% RH
+ O8 }- A# T5 @3 \3 h- +/-3% RH tolerance
, R: H1 ?. o$ B6 ^$ {# X4 h4 N# P- 20 – 30°C
6 s# c& R2 |% y. t- i- ?Meeting:
. x$ V3 F! ~, R( N/ a) z, ADecision confirmed
. Q% y; T2 }  v( T2 O1 P! u" aat 45th CTL meeting6 p" `( l: g3 A7 I2 X1 L4 q( l
Question: Various IEC standards have requirements for humidity/temperature
8 w4 a: l* O, O+ ~. w% E1 y. bconditioning, but have different specifications for the test conditions.
4 v# y' J2 p- t1 r& v# u% RIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)" k( r/ }( ]( l
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
# _: ]( h9 J8 y) d% J7 C3 D% ?IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
6 j* B' p2 h' U+ H8 hIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
/ _" M: }" o) t8 [* G$ p1 jIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
, k; p/ ]% P$ W! t, rThere does not seem to be a technical justification for the differences in the
3 v/ G5 Z7 o5 g# u2 e$ D( B0 Bspecifications.8 N* V+ q9 v# M! c3 i0 T7 W- W( L  Y) o
Accordingly, it is suggested and recommended that the humidity/temperature
( A( P2 G: w. D$ M  Q5 u) o/ z1 uspecifications in the above standards be consistent.
8 b/ o+ \0 s7 C2 y; z( ?) nDecision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient( E$ l2 D( \4 \
temperature between 20°C and 30°C, but the chosen temperature to be kept0 k, H* c* ?/ \, I+ k+ z- I# t
within +/- 2°C during the test.
) X/ r1 J8 H+ Q; [The standard specifications for the humidity are to be met at the2 @8 v! E$ }4 s/ N( B
reference/measuring point, where the controlling humidity sensor is located.. h3 ]2 F% W+ F/ j
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
1 u" w, P- Y, U- W, kparts of the humidity chamber, away from the reference point.7 S1 ]5 T$ ?2 c5 O" j) ]8 v, C; g
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