DSH 624/07 Humidity test requirements

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广东安规检测
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IEC60335试验指甲

DSH 624/07

Humidity test requirements + c0 V# C: r5 V7 V

Various

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
3 x  e5 U! X+ R# U7 k9 p. ?5 T' W7 wA1/2005
IEC 60950-1/2005
1 V3 B' f7 F( |( o: D: MIEC 60601-1/2005
IEC 61010-1/2001
IEC 60335-1/2001
( m6 d# c( |& Q( rA1/2004
7 s- p* i; `$ P! z+ m) L9 u" NA2/2006
Sub clause(s): Various
% c3 W2 g& T4 \4 U* [Sheet N°: 624/07
CTL-WG4
Page: 1(1)
, f) T9 k4 v! n) {Subject(s): Humidity test
, y9 d. F1 i3 k2 ]6 Orequirements
Key words:
- 93% RH
0 `6 i. `& A7 n4 W- +/-3% RH tolerance
" K  b# T1 S# i* P# W! |9 R3 B" @- 20 – 30°C
3 m; ]+ Q( S, m0 w% i+ s  g, v" nMeeting:
' B, X  `& X$ _+ BDecision confirmed
6 A5 v( y: _/ R; s( F( @8 \+ {5 l7 ]3 qat 45th CTL meeting
% I- D: N: ]1 Q! S) P+ x& G1 QQuestion: Various IEC standards have requirements for humidity/temperature
conditioning, but have different specifications for the test conditions.
) I2 j; `- K3 i4 P& f% jIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
9 l8 n2 H6 ]! i) e" G5 r0 C# F, QIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
/ j5 W; i6 U6 N; C2 a) @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)
There does not seem to be a technical justification for the differences in the
specifications.
$ Z' S4 o: |& r1 g' iAccordingly, it is suggested and recommended that the humidity/temperature
" j* J9 e6 Q6 k: Y4 W' r) m7 Mspecifications in the above standards be consistent.
# B6 ~/ I" M) m+ V# G" @2 ~! \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
within +/- 2°C during the test.
The standard specifications for the humidity are to be met at the
4 o$ k" u5 d4 s/ v+ G3 b4 Rreference/measuring point, where the controlling humidity sensor is located.
" V0 U" i* E" d0 J$ ?The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other
. O+ A0 D0 Y, P5 `7 H0 _parts of the humidity chamber, away from the reference point.

" A6 U) m3 v) f