DSH 1048

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广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

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

Question
# K5 B" ]  g( @! l9 N9 |The first sentence of clause 3.4.3.1 of IEC 60384-14 states: ”Capacitors of each technology, rated
voltage, class and sub-class shall be separately qualified”.
2 H* s) m( i  \If it is requested to qualify a dual-class X/Y capacitor (e.g. X1:400 V, Y2:250V), is it permissible to
# U5 u- {1 U$ r% N/ Hperform one type test only by applying for each individual test the highest test severity?
To qualify a dual-class X/Y capacitor, testing laboratories may have different interpretations of this
sentence.
Interpretation a): Some testing laboratories test the same capacitor series once for X1 and once for
Y2 at the same time in separate type tests.
4 B; h9 W3 I, H7 tInterpretation b): Other testing laboratories follow the opinion that the safety of the capacitors is also
2 |- w) o4 ?& `/ O, k, Vassured if a mixture of highest testing (peak) voltages of both sub-classes is used. This means worst
8 }& u/ ^1 C' N. J0 xcase testing, covering both sub-classes for certification.
. Q/ S& h3 I+ z, \. W0 JBoth interpretations may possibly lead to the result of compliance or non-compliance of the capacitor,
  m+ u+ f" O$ Oas in a) more samples are tested and in b) a single capacitor is more stressed.
From the technical point of view, it should be acceptable to perform one type test only by applying the
, _) i3 X  Z7 Whighest test severity for each test.
Decision
6 V5 ^0 W5 U9 i# t6 x6 y5 f1 AWhen a range of dual-class capacitors (X/Y) is qualified, it is allowed to perform one type test only, if
& ]! H5 z& ~$ o8 s! `6 Tthe highest severity of the X or Y class is applied in each respective test.

+ H+ O5 d/ H, L) w9 ~! k

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DSH 1048附件