交流源不会提供足以烧断电源保险丝的电流﹐因此不适合非正常测试。

AC source may not deliver current to blow the fuse in a power supply, it is not suitable for abnormal test.

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在确保切断电源及拨下电源插头的情况下，方可进行仪器的日常维护、修理或者更换保险丝等工作。

Routine maintenance, repair or fuse replacement etc may be performed only after powering off or switching off.

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为避免火灾，本仪器指定的标准保险丝规格是220v、1a，更换保险丝前，切断电源和负载。

To avoid fire, this product should be provided with 220v, 1a standard fuse. Before replacing fuse, cut off power and load.

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