电压和电流采用有效值测量，保证数据更准确。采用循环显示及具备提示性显示方式，显示内容多。
Use effective value to figure the voltage and the current which ensure higher accuracy. Display in a cycle with prompt to accommodate better content.
整个装置通过了全面的实验验证，实验结果表明装置能够准确的实现各种电流、电压保护和各种告警功能；
The device has passed the total experimental validation. Experiment result shows that this device completes the exact current protections, voltage protections and alarms.
这些电阻器的阻值应当使其在最大测试电流时的电压降不会影响测量的准确度。
These resistor values should be such that the voltage drop at the maximum measured current will not affect measurement accuracy.
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