DSH 624/07 Humidity test requirements

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IEC60335试验指甲

DSH 624/07 3 k6 Z% f/ Z; @ . X7 m& _# _5 n

Humidity test requirements

Various ( \5 E/ J( w% J) D' 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
7 i$ `5 ]9 j, h( ~) tA1/2005
! I& G: h  z& k; e9 lIEC 60950-1/2005
6 N1 D, ^9 b$ i' v/ vIEC 60601-1/2005
2 g5 x$ [8 e+ A  e" [IEC 61010-1/2001
$ e9 q7 F: E) J1 ?9 S# |IEC 60335-1/2001
A1/2004
A2/2006
Sub clause(s): Various
Sheet N°: 624/07
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Page: 1(1)
Subject(s): Humidity test
requirements
Key words:
- 93% RH
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- 20 – 30°C
4 o, n0 H; A5 N- yMeeting:
+ D! R2 q4 j' M* W* f6 w1 hDecision confirmed
at 45th CTL meeting
Question: Various IEC standards have requirements for humidity/temperature
conditioning, but have different specifications for the test conditions.
$ s6 d6 Y4 {0 `( U6 b/ [IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
% m+ f$ G3 m: T5 p) `4 |5 l% ~: bIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
IEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
5 O/ {0 Y6 D  l1 qIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
7 u4 y* C, V# i# B5 i) |" JThere does not seem to be a technical justification for the differences in the
specifications.
Accordingly, it is suggested and recommended that the humidity/temperature
specifications in the above standards be consistent.
! Z9 q* U! {. ]: z* k# G$ pDecision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
' U0 A6 H9 q& v. W- W8 Otemperature between 20°C and 30°C, but the chosen temperature to be kept
within +/- 2°C during the test.
The standard specifications for the humidity are to be met at the
reference/measuring point, where the controlling humidity sensor is located.
* `) _& l  |- S, E& `The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
+ Q6 S6 o- |" }6 E( K1 ?( Rparts of the humidity chamber, away from the reference point.

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