根据压流特性选择电涌保护用压敏电阻

Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105) Pub Date : 2000-04-07 DOI:10.1109/SECON.2000.845460

R. Siegert, Osman Abdalla Abaker Mohammed

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引用次数: 8

摘要

评估了金属氧化物压敏电阻在电信系统浪涌保护模块中的应用。为此，对器件模型的定义及其电压电流特性进行了详细的定义和分析。为了重现间接雷击和开关过电压的影响，开发了一种高压脉冲发生器，以产生双指数电流。为此，建立了一套记录不同非线性保护装置时间响应的实验装置。本文介绍了小型封装压敏电阻的电压电流特性，以及数值模拟结果与该器件实际冲击试验记录数据之间的关系。此外，它旨在被工程师和系统设计人员用作选择适当的电信系统非线性保护装置的初始方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Selection of varistor for surge protection purposes based on their voltage-current characteristic

The use of metal-oxide varistors in surge protection modules for telecommunication systems was evaluated. For this purpose, the definition of the device model and its voltage-current characteristics were defined and analyzed in detail. A high voltage impulse generator was developed to generate double exponential currents, in order to recreate the effects of indirect lightning strikes and switching overvoltages. As a result, an experimental setup was developed to record the time response of different nonlinear protective devices. This paper describes the voltage-current characteristics of small packaged varistors and the relation between numerical simulation results and the data recorded from the actual impulse testing of such devices. Additionally, it is intended to be used by engineers and system designers as an initial approach for selecting the adequate nonlinear protective device for telecommunication systems.

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来源期刊

Proceedings of the IEEE SoutheastCon 2000. 'Preparing for The New Millennium' (Cat. No.00CH37105)

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