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|  DSH 624/07
' l2 I8 t0 t! b1 V) Z3 p2 z6 H; Q( x$ { w8 T) x. Z, ^% ^6 L
| Humidity test requirements. a, v! D4 ]1 D
| Various3 ]. e5 \( A9 m+ L) d. m9 c
| 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1
! a6 ?5 v% Y0 ]" T |
. ~! }1 { U/ [( s; r
Standard(s): IEC 60065/2001- m& E8 U: u, b, }+ H
A1/2005
# ?' U. `8 P2 ^IEC 60950-1/2005
) w6 Q: b+ S. E* Z% B1 lIEC 60601-1/20058 j$ d4 ?2 R" k
IEC 61010-1/2001
$ c; A* V- E, z% A$ w7 E7 z5 Q8 [IEC 60335-1/20015 d, ?9 X, Y2 V9 U9 a- ?) g
A1/20043 L8 y! V5 X+ N
A2/20063 l. z2 q0 W- A& h' z* m
Sub clause(s): Various
* ]! U2 H' E+ e# P- e; m: FSheet N°: 624/07
, l( R" X3 p. ]3 w; d' `1 Z- _CTL-WG4. R( U! W& V% n5 _$ Z; i4 Z
Page: 1(1)
' D$ h' f* j! U$ F6 B& L8 G9 FSubject(s): Humidity test
1 k9 G' Q$ V0 Grequirements! D, `# k# X, t
Key words:2 R' Q! T7 \! y+ J2 K
- 93% RH. m. w, A' ~8 p6 s$ Y
- +/-3% RH tolerance5 c0 ]6 ?! L3 h9 ^9 v
- 20 – 30°C
4 C/ @/ a# v+ O% {* IMeeting:
0 e/ b# ?- }% Y5 q& [Decision confirmed, q7 }3 ]& X% ~- y% W" e+ K
at 45th CTL meeting
2 y5 t& d& R: S6 OQuestion: Various IEC standards have requirements for humidity/temperature
/ b* W/ h1 ~" b* M! H8 ?conditioning, but have different specifications for the test conditions.* t1 Z: a# c. D! X% e' m# U
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
$ `# k" J: I, V& c! E+ L3 I! hIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
1 L4 n6 y* I" FIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
1 U, f$ n# Z3 @4 H/ hIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
. z3 g4 V, r+ q6 w7 X% mIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)% s( O% L: l% r- n* U* O
There does not seem to be a technical justification for the differences in the
: w# D( T+ a. F. z( ~8 Cspecifications.4 Q- _- b; d7 Q3 K4 _- k
Accordingly, it is suggested and recommended that the humidity/temperature
( [9 y( V" D- {; l+ i4 X) t# O; mspecifications in the above standards be consistent., f1 o) @# S! i7 S, s
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient9 T% |. x# ^2 k$ B( z! U( U
temperature between 20°C and 30°C, but the chosen temperature to be kept
" ?' C% P. [6 C9 twithin +/- 2°C during the test.
# Z) H+ G. `4 pThe standard specifications for the humidity are to be met at the
, {! h) p! e2 Y$ Freference/measuring point, where the controlling humidity sensor is located.* T# {& l( ~ I* a. n9 N, s
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
- S2 o: A5 I9 M5 u9 X8 D5 o# fparts of the humidity chamber, away from the reference point.4 k! N* ?) G" H# o
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