DSH 624/07 Humidity test requirements

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IEC60335试验指甲

DSH 624/07 * G; }4 y6 d  [3 }5 f2 v, A; b/ p7 Y% ]

Humidity test requirements - H  a0 {( d# A

Various 7 K& d" J9 S: d. Q& W/ _

60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1

Standard(s): IEC 60065/2001
A1/2005
IEC 60950-1/2005
IEC 60601-1/2005
8 k3 }( O9 X/ W4 Q( E9 L! L( JIEC 61010-1/2001
( ?5 q3 r4 h/ K; m( F+ E& ZIEC 60335-1/2001
A1/2004
# l; ?' u" }6 @; lA2/2006
Sub clause(s): Various
Sheet N°: 624/07
CTL-WG4
! Q! @' {$ T, o: }3 [Page: 1(1)
4 n7 F9 r- g! K) s9 f6 BSubject(s): Humidity test
requirements
Key words:
- 93% RH
- +/-3% RH tolerance
- 20 – 30°C
Meeting:
Decision confirmed
0 \6 G2 x& n* M' uat 45th CTL meeting
Question: Various IEC standards have requirements for humidity/temperature
conditioning, but have different specifications for the test conditions.
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
" K5 C/ q; t& E3 G/ _% {IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
$ g9 v+ W' d. e# ]0 I, j* n% d) {IEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
( ?+ R+ m" q0 u1 r1 y& P% K9 e0 c! c3 LIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
There does not seem to be a technical justification for the differences in the
specifications.
$ [  B, L. Y2 E; _8 t; qAccordingly, it is suggested and recommended that the humidity/temperature
specifications in the above standards be consistent.
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
temperature between 20°C and 30°C, but the chosen temperature to be kept
' o7 I; |5 p" L! Gwithin +/- 2°C during the test.
: y% S5 @9 y$ p5 Z1 u" UThe standard specifications for the humidity are to be met at the
! b, w' t& E% l- @; m. Breference/measuring point, where the controlling humidity sensor is located.
8 Q3 i* }& H6 I, [8 j5 ]9 BThe tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
/ C5 z$ d9 l0 Z  _2 _parts of the humidity chamber, away from the reference point.


. g% M; f& X2 {0 ~) ^: H