根据可靠性抽样理论，分析了过载继电器的可靠性试验方案，研制了过载继电器可靠性试验装置。
Based on the reliability sampling theory, the reliability examine plan of overload relay was analyzed and the test device was developed.
针对传统电器可靠性失效分析方法中存在的问题，提出了一种电器可靠性失效分析极大似然估计方法。
To be direct against problems of traditional apparatus reliability failure analysis method, this paper presents a failure analysis method based on maximum likelihood estimation method.
为了确保磁保持继电器可靠动作，施加到线圈上的激励电压须达到额定值，且脉冲宽度设置须达到动作时间的3倍以上。
Ln order to ensure the reliability of relay coil voltage, must reaeh value, the pulse width must be 3 times more time.
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