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Energy coordination of ZnO varistor based SPDs in surge current due to direct lightning flashes

机译:ZnO压敏电阻的SPD的能量协调归因于直接雷电闪击

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Surge protective devices (SPDs) play an important role to protect the valuable electrical and electronic equipment against transients originating from lightning. Class I tested SPDs are needed to divert surge currents due to direct lightning flashes. In order to achieve the effective protection of sensitive electrical and electronic systems, coordinated SPD systems should be designed and installed. This paper presents the experimental results obtained from the actual installation conditions of SPDs with the aims to understand the energy sharing of the cascaded Class I and II SPDs and to propose the effective selection and installation methods of SPDs. The residual voltage of each SPD and energy coordination between the upstream Class I tested SPD and the downstream Class tested II SPD were measured using a 10/350 μs current wave.
机译:电涌保护器(SPD)在保护宝贵的电气和电子设备免受雷电引起的瞬变起着重要作用。需要经过I类测试的SPD来转移由于直接雷电引起的浪涌电流。为了有效保护敏感的电气和电子系统,应设计和安装协调的SPD系统。本文介绍了从SPD的实际安装条件获得的实验结果,目的是了解级联的I和II级SPD的能量共享,并提出有效的SPD选择和安装方法。使用10/350μs电流波测量每个SPD的剩余电压以及上游I类测试SPD和下游II类SPD之间的能量配比。

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