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| Humidity test requirements% V( O1 ~$ s' F2 i3 k
| Various
6 q& z: Y) B( [- N+ g' \ | 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1
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Standard(s): IEC 60065/2001/ f/ v8 ]8 v5 U/ H z9 o
A1/2005
/ l, D. n8 ~5 }; IIEC 60950-1/2005
9 g/ ]5 F3 n0 j# z! UIEC 60601-1/2005
4 A' l+ K$ z& X2 r6 _3 r0 VIEC 61010-1/2001/ O+ ~+ B. J% }1 B+ r+ B
IEC 60335-1/2001
; s" w' U3 @' m! gA1/2004
% H' r$ y# y0 @( fA2/2006' e, n0 z+ L7 ^9 n
Sub clause(s): Various- j8 j2 q/ A; L J+ b
Sheet N°: 624/07
1 ?% m7 F ~* p) s; I' Q$ ]CTL-WG4/ r0 X6 X9 s! _4 J8 v
Page: 1(1)" o/ x/ u# u3 J8 @* r5 [+ V
Subject(s): Humidity test. J$ B5 X: Q1 g* X2 |
requirements4 j0 P% q# N7 n4 ~9 p
Key words:4 [" p: h' J* o9 _" d/ @9 M
- 93% RH
9 q; J! ~3 j- @9 f, H8 |% i# \- +/-3% RH tolerance
1 c. z% t2 l5 a3 w/ U# k# ?- 20 – 30°C
; o G; L$ U" Z. |9 j. V1 w! }! nMeeting:! b% S, J' {$ l( g' Y
Decision confirmed$ p# b; w% ]; R4 y5 J- e
at 45th CTL meeting' `1 M! K' b) x2 _
Question: Various IEC standards have requirements for humidity/temperature
2 f8 N7 j) J4 nconditioning, but have different specifications for the test conditions.4 V) D7 H/ E4 _8 g! M* r, w2 k) L
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)' Z, G6 j L* @8 K; d/ C# d
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)2 ~+ ~6 \8 a, p: J# n u( `
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)' }& D! y/ k; T! `
IEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)/ [1 m- b6 d/ p! a8 f$ n
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
8 O2 q# n& @0 l# o% o4 q9 `There does not seem to be a technical justification for the differences in the( p$ n! |2 f" E& [2 w
specifications., @( `2 |( V B: X" ? A" u
Accordingly, it is suggested and recommended that the humidity/temperature' o: E% Q: l8 x
specifications in the above standards be consistent.
! A. k3 z9 X/ M& uDecision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient% c6 o1 l; }0 A, {" J/ ]
temperature between 20°C and 30°C, but the chosen temperature to be kept
% Z3 ]* Q) d2 h6 C) a9 O! r# Nwithin +/- 2°C during the test.
9 r- N. E! a1 t' z* A3 U; F& GThe standard specifications for the humidity are to be met at the4 X. K) @) B) w7 V8 ^, H
reference/measuring point, where the controlling humidity sensor is located.1 W0 g, H) Q0 z+ {; _0 G. C
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
. r( W8 x' ~% A4 Z/ Zparts of the humidity chamber, away from the reference point.5 |8 ^/ C+ V4 O/ j; p
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