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| DSH 624/07; p+ Z) }7 B2 y9 P
: i9 d+ W* o0 y `( z* [ | Humidity test requirements
7 K9 O: y3 O3 T# m. c# H$ |1 h+ g | Various
$ m4 `' g2 F9 c. @$ p | 60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1
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Standard(s): IEC 60065/20018 i0 W# I3 j( Y l1 ?$ g: K4 t9 t- T2 w
A1/2005
& n+ }' n' t( ZIEC 60950-1/2005
/ e# c4 @. A/ V8 {, vIEC 60601-1/2005
7 V0 R2 J% k, }7 QIEC 61010-1/2001 q2 h' R3 a0 C) q/ q- V1 W0 n
IEC 60335-1/2001
U% X6 i/ F% H! a" g) h' jA1/2004
; K) w. [. } Z5 F( TA2/2006
+ r% r! f- J' XSub clause(s): Various/ G" f/ ^- k* g: v& k
Sheet N°: 624/074 e: c; J2 F J) d, f
CTL-WG4( ]5 b2 p/ e0 o
Page: 1(1)) P) U- q# K b& |
Subject(s): Humidity test$ G5 J2 L+ | W4 Q
requirements. |/ Z3 J* c c5 H' o+ J, k# e
Key words:6 W f* c) v" H c+ q4 r1 y
- 93% RH
4 k9 S# U& i* t& ~: k- +/-3% RH tolerance" v$ Y; |* |3 n5 l$ S
- 20 – 30°C# }. n/ {2 u! y
Meeting:
0 e _/ b8 a- o- O7 i ]Decision confirmed
2 C" x% I+ }3 Fat 45th CTL meeting
2 D8 \- [, K8 Y( j9 MQuestion: Various IEC standards have requirements for humidity/temperature; p9 o; ^/ U" } S
conditioning, but have different specifications for the test conditions.; R% o/ N4 R! @. T
IEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
: Q' U0 x0 p: j7 g6 l9 \- W" LIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
2 f0 z. h2 C5 T1 n2 jIEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
+ J k1 H, x* E) B9 z7 w$ @- h+ SIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
8 `- Z7 q! m9 v5 G, uIEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
' O' x# ]* V( e( p+ c& L4 mThere does not seem to be a technical justification for the differences in the5 F& \3 G- P7 X% E3 A
specifications.$ x4 x) W: l. Q+ G6 p8 d* H
Accordingly, it is suggested and recommended that the humidity/temperature
) Q3 Q9 W5 G3 T% E2 C) r0 u1 ]specifications in the above standards be consistent.
* n0 s9 w9 n; T: ]Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient/ h" u/ z. w9 g L
temperature between 20°C and 30°C, but the chosen temperature to be kept# \7 O- G0 J6 g1 C5 H' @
within +/- 2°C during the test.- t/ S- W& n) _9 X8 B: f! A4 v; {" c
The standard specifications for the humidity are to be met at the
' {6 d' c3 |! W! f/ _) [( ?reference/measuring point, where the controlling humidity sensor is located.
' K9 X4 `! A: u. n% nThe tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other) A9 j9 q+ L |. f! F2 C
parts of the humidity chamber, away from the reference point.
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