在实际应用中由于环境恶劣，若接地不良易影响设备间通信，严重时将导致工作异常。
However, the environment may be very bad in practice. The communication between equipments will be disturbed if grounding is unreliable, and even the equipments will be operated abnormally.
引起热控设备损坏的原因有电源及信号电缆接地不良、虚接地及利用安装支架作为接地等情况。
Several factors contributes to the damages on control equipment such as the bad grounding of power supply and signal cables, virtual earth and utilizing installing bracket as grounding etc.
资料表明，国内外近年来由于接地不良，造成事故扩大，导致系统停运、设备损坏的例子是不少的。
It is shown in information that the poor grounding has caused failures and resulted in expansion of failure, outage of system and equipment damage both domestically and abroad in recent years.
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