DSH 624/07 Humidity test requirements

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小型摆管淋雨试验机

IPX5X6X7喷水试验机

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家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 624/07 $ d! S: o/ ^! v9 e) p* o

Humidity test requirements ' n" b: C" T1 t3 V5 z

Various

60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1 & t5 d3 j+ p# q; y( G

Question: Various IEC standards have requirements for humidity/temperature conditioning, but have different specifications for the test conditions.
8 P5 }# y+ z; _; uIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
IEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)
6 B" t9 C, d' e( f" MIEC 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)
$ D. N( o9 N( F8 j0 F! GThere does not seem to be a technical justification for the differences in the specifications.
( _( }4 v8 ]% g7 _Accordingly, it is suggested and recommended that the humidity/temperature specifications in the above standards be consistent.
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.
# B/ {9 ^; b: DThe standard specifications for the humidity are to be met at the reference/measuring point, where the controlling humidity sensor is located.
# t5 B; f, \; ^  W, N. |The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other parts of the humidity chamber, away from the reference point.
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