注2：不考虑在正常使用中可能发生的基本绝缘失效。
NOTE 2 Failure of basic insulation is not considered likely to occur in normal use.
变压器内部短路故障发生的原因主要是变压器内部的绝缘失效。
Transformers do suffer from the internal short-circuit faults mainly due to internal insulation failure.
如果数据电缆附近有高压电缆经过，在诸如绝缘失效、意外接触设备，则会存在故障电势。
If there are high voltage cables running anywhere near the data cables, the potential for a fault condition exists as a result of insulation failures or inadvertent contact by an installer.
分析了菱形分段绝缘器运行中滑道烧损、绝缘失效产生的原因，从弓网匹配的角度，对分段绝缘器的安装位置、工作条件和检修要点提出了改进建议。
In view of the matching of pantograph-overhead lines, improving Suggestions of the installation positions, working conditions and maintenances of section insulators are put forward.
这绝缘将失效？最终将损坏这产品。
阐述了断路、接触不良、瞬断、绝缘不良、短路、误配线、固定不良和密封不良等常见失效模式和失效机理。
The general failure model and mechanism of circuit break, loose contact, instant break, male insulation, short-circuit, false matching, poor fix and bad seal were discussed.
然而，逆变器输出的PWM(脉冲宽度调制)连续高压脉冲的上升沿很陡、频率很高，导致在脉冲电压下牵引电机绝缘过早失效。
However, Pulse Width Modulation (PWM) which was input from inverter is characterized by steep rising edge and high frequency, resulting in the too early failure of motor insulation.
对于操作人员可能触及的所有电子连接都要采取双重绝缘。双重绝缘确保即使一个绝缘层失效，操作人员仍将得到保护。
Double insulate all electrical connections that an operator could touch. Double insulation ensures the operator is still protected, even if one insulation layer fails.
采用了一种常态下利用双不对称电桥实时监测直流系统绝缘的方法，解决了正负母线绝缘均按比例下降时失效的问题。
A new method is adopted to real-timely monitor DC system insulation, which applies double asymmetrical Bridges to keep it effective when positive and negative pole insulations drop in same proportion.
以及绝缘介质是如何在热、机械应力和脉冲电压的作用下老化继而失效的。
Secondly, discuss the influence of the electrical, thermal and mechanical aging -on insulation degradation.
这绝缘将失效﹐最终将损坏这产品。
这热量帮助击穿电线绝缘较薄的地方﹐否则线材通过电极而没有被检测到﹐结果在以后的火花测试和高压绝缘试验将会失效。
This heating helps to break down weak spots inthedielectric that otherwise might pass through theelectrodeundetected, only to fail during a later spark orhipottest.
这热量帮助击穿电线绝缘较薄的地方﹐否则线材通过电极而没有被检测到﹐结果在以后的火花测试和高压绝缘试验将会失效。
This heating helps to break down weak spots inthedielectric that otherwise might pass through theelectrodeundetected, only to fail during a later spark orhipottest.
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