（一）在室温10℃-35℃，相对湿度不大于80%；

(1) the relative humidity is not more than 80% at 10 C -35 C at room temperature;

（二）在稳固的基础或工作台上，正确安装，环境无震动，无腐蚀性介质；

(two) correct installation on a solid foundation or workbench, without vibration and corrosive medium.

（三）电源电压的波动范围不应超过额定电压的±10%，试验机电源应有可靠接地，频率的波动不应超过额定频率的2%。

(three) the fluctuation range of the supply voltage should not exceed 10% of the rated voltage. The power of the tester should be reliably grounded, and the frequency fluctuation should not exceed 2% of the rated frequency.