DSH 624/07 Humidity test requirements

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IEC60335试验指甲

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DSH 624/07

Humidity test requirements " K6 T$ e: M$ q" H1 \: I7 v

Various . Q. }7 o1 d6 s" }2 h

60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1 5 [$ S8 ?8 Y+ }; Z3 T* S

Standard(s): IEC 60065/2001
& m( N0 I4 L+ b2 ]( aA1/2005
' a9 ^' [4 Q2 d: cIEC 60950-1/2005
$ X  ~( o+ P7 E7 l2 E2 i! v( mIEC 60601-1/2005
IEC 61010-1/2001
IEC 60335-1/2001
; F, I5 \8 R9 OA1/2004
A2/2006
Sub clause(s): Various
. n/ C7 J. I8 D5 w8 Z$ ^1 j4 lSheet N°: 624/07
6 E8 @+ A. M. z6 m1 LCTL-WG4
  [" n4 }3 c2 j) I; ^7 [! QPage: 1(1)
: k$ {+ f! E, q7 L4 f9 v) QSubject(s): Humidity test
requirements
, ^# c+ ^$ d% V% U* e5 m' {3 bKey words:
- 93% RH
- +/-3% RH tolerance
- 20 – 30°C
Meeting:
Decision confirmed
at 45th CTL meeting
Question: Various IEC standards have requirements for humidity/temperature
1 x1 E0 B- m% x" F* Y! g2 z9 Tconditioning, but have different specifications for the test conditions.
( K& G6 |  C# p( M1 c" H8 `- a. YIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
; m' ^0 P* P9 ~: I" u- n# P# xIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
. Y# f, h; R/ `* u4 ^) c  F( n( z  YIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
9 b& a& v. z' DThere does not seem to be a technical justification for the differences in the
specifications.
Accordingly, it is suggested and recommended that the humidity/temperature
( Z/ y: B) n  n9 ispecifications in the above standards be consistent.
1 `2 j' K& o$ j8 HDecision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
7 Y! g) w2 t9 H+ P0 Ktemperature between 20°C and 30°C, but the chosen temperature to be kept
6 X" R! ?/ `1 Pwithin +/- 2°C during the test.
( j: s5 x& F- F4 }The standard specifications for the humidity are to be met at the
; Q8 H2 Y. L4 l& G+ ~- Greference/measuring point, where the controlling humidity sensor is located.
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
6 d. H& y9 J8 q$ eparts of the humidity chamber, away from the reference point.

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