如果在继电器中发现可燃气体，这说明有内部故障，比如过热或者电弧作用；而继电器内的空气只说明油位低或者有漏油。
Flammable gas found in the relay indicates some internal fault such as overheating or arcing, whereas air found in the relay may only indicate low oil level or a leak.
正常状态下，残留在泄露和过热感应器和各自的输出继电器上的电阻会被释放。
Under normal conditions the resistance remains between the leakage and over-temperature sensitivities, and both output relays are de-energized.
正常状态下，残留在泄露和过热感应器和各自的输出继电器上的电阻会被释放。
Under normal conditions the resistance remains between the leakage and over-temperature sensitivities, and both output relays are de-energized.
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