While grounding rods are basic and surge protectors can cost as much as $400 or more, a perhaps bigger expense is to organize and maintain the system, he said.

他说，接地棒是最基本的，避雷器成本可能高达400美元或以上，但或许更大的开支是组织和维护这个系统。

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Tower grounding resistance, distance between towers, etc can affect the function of line-surge arrester.

输电线路的接地电阻，线路档距等因素对线路型避雷器的应用有影响。

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The lightning protection could be improved by means of decreasing grounding resistance of tower, installing line type surge arrester and side lightning rod as well as increasing the insulation level.

采取杆塔降阻、装设线路避雷器、侧向避雷针和加强绝缘等多种措施后，防雷保护效果较好。

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