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Lightning Current Estimating and Protective Design of Smart Water Meter's Data Acquisition Card

机译:智能水表数据采集卡雷电流估算及保护设计

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There are two ways to transmit signals which are RS-485 signal and a kind of special signal in the new type of Smart water meter's data acquisition card. The work on design of the Surge Protection Device (SPD) is made by estimating the lightning current which travels in signal wires, comparing the capacity of restraining interfering signal between balanced signal and unbalanced signal, in according to JJG162-2009. A lot of experiments were tried with LST-6kV/3kA and ICGS, which could approve the feasibility of this design, after these approaches, some suggestions are made which enjoy great practical engineering significance.
机译:新型智能水表的数据采集卡有两种发送信号的方式,即RS-485信号和一种特殊信号。根据JJG162-2009,电涌保护装置(SPD)的设计工作是通过估算信号线中流过的雷电流,并比较平衡信号与不平衡信号之间的干扰信号抑制能力而进行的。在LST-6kV / 3kA和ICGS上进行了大量的实验,证明了该设计的可行性。在这些方法之后,提出了一些具有重大工程意义的建议。

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