This paper elaborated the working principle of electronic scales generating surge voltage; introduced characteristics of SPD,and commonly used surge absorption protector. Transient over-voltage graded protection measures and the use of graded protection device were provided. aiming at solving the stable working problems of electronic scale in surge voltage and lighting protection environment.%本文阐述了电子衡器产生浪涌电压的机理;介绍了浪涌保护器的特性及常用浪涌吸收保护器,并给出瞬态过电压分级保护措施以及分级保护器件使用.旨在解决电子衡器在浪涌电压和防雷环境中稳定工作问题.
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