Temperature relay tests temperature of motor, if it exceeds rating temperature to send a signal, contactor cut off main circuit to complete protection of motor.

温度继电器检测电动机温度，超过额定温度发出信号，接触器切断主电路，完成电机保护。

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However, to be useful, they must be characterized for capacitance value, voltage rating, temperature coefficient, and leakage resistance.

然而，要使用电容器就必须明白其特性：包括电容值、额定电压值、温度系数以及泄漏电阻等。

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Northerly situated Scandinavia, which gets some of its currents from the Arctic Circle, is home to a lot of snow and cold, with Helsinki, Finland, facing the moisture of the Baltic Sea in addition to low temperature, rating tops in both categories.

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They are certified to MIL-STD 810G for extremes in temperature, vibration, shock and four-foot drops and have an IP65 rating for ingress protection, which means they are fully protected against dust and can withstand low pressure jets of water from all directions.

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