DSH 624/07 Humidity test requirements

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DSH 624/07 0 ?/ p+ Q) `3 V0 P. i

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 ; A7 _5 b, w/ E# N( e8 a

7 P  m. |. x" @Standard(s): IEC 60065/2001
. J3 M0 P5 e" YA1/2005
IEC 60950-1/2005
IEC 60601-1/2005
6 h* U4 Q( r8 QIEC 61010-1/2001
$ @5 D" ~/ X" X3 ZIEC 60335-1/2001
) a) d$ u8 f4 |4 S) A, J4 o3 ZA1/2004
( _! w/ U1 g: H3 eA2/2006
Sub clause(s): Various
Sheet N°: 624/07
CTL-WG4
Page: 1(1)
' ^: s; Q0 ?+ W/ Y- G# A- q: NSubject(s): Humidity test
requirements
$ e  ]; \2 z/ g6 [/ A: I. }6 cKey words:
: m4 ?! @! g! R! p5 i- 93% RH
+ a" M1 y  b1 L5 d' S) y- +/-3% RH tolerance
# S) b8 Z3 J7 r5 P0 V% {9 @& o- 20 – 30°C
Meeting:
Decision confirmed
' }3 `6 `+ W! e; E7 q2 bat 45th CTL meeting
  W# Z+ c) }% B# U4 \) I4 ]2 R5 O9 _( [Question: Various IEC standards have requirements for humidity/temperature
9 d  X  g6 H2 u2 z: C5 Yconditioning, but have different specifications for the test conditions.
* a6 c& {/ c! }: `IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
5 ^+ L4 ~3 d5 ^2 yIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
IEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
: t$ w7 o8 w4 H  ^' |% h9 mIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
& r/ z; \+ @# I8 X5 s, p! r' P* \: XThere does not seem to be a technical justification for the differences in the
0 b  s* ]% X  y( b* U& aspecifications.
Accordingly, it is suggested and recommended that the humidity/temperature
" F" d- i+ a2 `. z! w" \# D# t. lspecifications in the above standards be consistent.
. I( _- f9 @8 @5 qDecision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient
6 L, G, `& n& @3 s& W, m% k: Jtemperature between 20°C and 30°C, but the chosen temperature to be kept
within +/- 2°C during the test.
/ m7 @  c3 d& `' X, t6 m7 `. y- pThe standard specifications for the humidity are to be met at the
reference/measuring point, where the controlling humidity sensor is located.
The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
0 C( y% j: q# eparts of the humidity chamber, away from the reference point.