DSH 624/07 Humidity test requirements

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IEC60335试验指甲

DSH 624/07 # w7 M! l( G* Y! D2 p9 j* ~

Humidity test requirements

Various

60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1 0 a; Z, I  T; D

Standard(s): IEC 60065/2001
! p( y% D* m) F; B. w( V% zA1/2005
' L) E$ \  e' O; E- EIEC 60950-1/2005
IEC 60601-1/2005
3 s( W7 W. U- p  UIEC 61010-1/2001
IEC 60335-1/2001
0 [5 `7 s4 D7 C6 M/ O% YA1/2004
A2/2006
  p- m9 e% j6 e% c$ E( t3 mSub clause(s): Various
Sheet N°: 624/07
CTL-WG4
; I3 h; c: J& F6 W+ g( w, BPage: 1(1)
2 x( \: C2 c% Y1 {2 P7 {Subject(s): Humidity test
requirements
! D: K% G, B& {Key words:
& H0 @* y: b8 Q* N" N" H- 93% RH
- +/-3% RH tolerance
0 y0 V: ]3 \6 J( h. x( S- 20 – 30°C
/ s4 S9 Y- G+ y: L( i, B& ?Meeting:
Decision confirmed
% r: [" r6 Z: a, B2 P" {at 45th CTL meeting
3 J7 P0 U% v4 G% ~# HQuestion: Various IEC standards have requirements for humidity/temperature
( b! Y  ^6 K3 J% s( x$ Wconditioning, but have different specifications for the test conditions.
* ?4 M% B+ `4 B7 o* RIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
% m% U% l# `0 HIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
# b9 C: V% r9 P, o# T6 yIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
7 ?, Z$ U9 b. X+ M* M$ IIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
' Q) s0 C% s  Z! [- I# _There does not seem to be a technical justification for the differences in the
- [7 X& w5 H% pspecifications.
) l$ O6 J/ z6 L5 ~# nAccordingly, it is suggested and recommended that the humidity/temperature
# A* M" t4 i1 g" @8 W; D5 y) e, a7 jspecifications in the above standards be consistent.
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
9 ^6 P% G, v* s7 b* A1 ~. j9 ltemperature between 20°C and 30°C, but the chosen temperature to be kept
8 S9 l! X6 M: K7 o" A3 |3 {# r5 R- s9 Zwithin +/- 2°C during the test.
6 v* l' X- r: ?% ^9 O/ iThe standard specifications for the humidity are to be met at the
reference/measuring point, where the controlling humidity sensor is located.
9 D' _0 `5 c: v: |The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
' }- w' {/ U2 Kparts of the humidity chamber, away from the reference point.


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