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

Various

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

# r4 R  k" {: z9 C/ z  IStandard(s): IEC 60065/2001
A1/2005
1 ?- q. W# e# t- Z2 m$ t2 E; `( @IEC 60950-1/2005
# I6 i% m* F2 z* xIEC 60601-1/2005
* J( u$ j, I6 F; \5 r  YIEC 61010-1/2001
IEC 60335-1/2001
2 ~7 F$ w! G' F/ y! NA1/2004
A2/2006
  R, F$ \( a* J& L3 P* n" N. |6 dSub clause(s): Various
# @/ p$ B# |( d: USheet N°: 624/07
CTL-WG4
Page: 1(1)
Subject(s): Humidity test
, G0 U* Y  F6 Qrequirements
Key words:
- 93% RH
- +/-3% RH tolerance
, X+ [, f; R+ `7 g9 ?* k- 20 – 30°C
Meeting:
Decision confirmed
at 45th CTL meeting
( G4 c- I1 m' c. a8 T8 OQuestion: Various IEC standards have requirements for humidity/temperature
conditioning, but have different specifications for the test conditions.
# I& `: L/ @# r8 V- C2 g$ jIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
IEC 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)
. O7 s9 Q/ [) V3 |; m& rThere does not seem to be a technical justification for the differences in the
specifications.
Accordingly, it is suggested and recommended that the humidity/temperature
2 D& }, K. ^2 ?specifications in the above standards be consistent.
1 `' h0 ]/ U2 A1 H: Z) h  }/ ]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
$ \" Z; G& m0 y5 w+ Ewithin +/- 2°C during the test.
0 P/ j# S& u0 B0 a0 OThe standard specifications for the humidity are to be met at the
reference/measuring point, where the controlling humidity sensor is located.
5 ?- u- O  q  GThe tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
5 h& M8 E; e3 R' p; ~( kparts of the humidity chamber, away from the reference point.
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