稳定状态（steady condition)
在IEC标准中经常有提到试验要达到稳定状态，请教各位：如何定义这个‘稳定状态’？谢谢！ IEC标准里中黑体字都是有定义的，详见第三章定义。 UL 标准里的一段，供参考。thermal equilibrium is to be considered to exist only if three successive readings indicate no change when taken at the conclusion of each of three consecutive equal intervals of time, the duration of each interval being whichever of the following is longer:
a) 5 minutes; or
b) 10 percent of the total test time elapsed previous to the start of the first interval. tf77587782 发表于 2015-11-2 16:44 static/image/common/back.gif
IEC标准里中黑体字都是有定义的，详见第三章定义。
4706.01 第三章并没有稳定状态的描述啊:shutup: 281680153 发表于 2015-11-3 09:05 static/image/common/back.gif
4706.01 第三章并没有稳定状态的描述啊
1、稳定状态对于不同产品的描述不同，一般会在特标的单独定义中。
2、IEC标准中黑体为定义。 半小时不超过一度 在IEC安规条款中是否有明确定义STEADY CONDITION
如果没有明确定义，是否可以按个人意识来解释？ qin.cq 发表于 2015-11-3 12:35 static/image/common/back.gif
在IEC安规条款中是否有明确定义STEADY CONDITION
如果没有明确定义，是否可以按个人意识来解释？
IEC 60335-1 Steady Condition 确实不是定义，但部分特标里会对这个词加以补充。
例：60335-2-24
NOTE 101 Steady conditions are considered to be established when three successive readings of the
temperature, taken at approximately 60 min intervals, at the same point of any operating cycle, do not differ by more than 1 K.
例：60335-2-40
When steady conditions are established, the air flow rate is reduced until it is just sufficient to
prevent a thermal cut out from operating.
特标也没有补充的，按照个人意识来理解吧 tf77587782 发表于 2015-11-3 13:56
IEC 60335-1 Steady Condition 确实不是定义，但部分特标里会对这个词加以补充。
例：60335-2-24
NOTE ...
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