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About This Item

 

Full Description

Scope

This standard applies to gas-tube surge-protective device components for application on systems with voltages less than or equal to 1000 V rms or 1200 V dc. These protective devices are designed to limit voltage surges on balanced or unbalanced communication circuits and on power circuits operating from direct current (dc) to 420 Hz. This standard contains a series of standard test criteria for determining the electrical characteristics of gas-tube surge-protective devices. The tests in this standard are intended as design tests as defined in The Authoritative Dictionary of IEEE Standard Terms [B1]1 and provide a means of comparison among various gas-tube surge-protective device components.2 Gas-tube devices are used to provide over-voltage protection in electrical circuits. When the breakdown voltage of the gas tube is exceeded, the normal high-impedance state of the tube changes to a low impedance state to allow the gas tube to conduct the surge discharge current. After the tube conducts the surge discharge current, it interrupts the flow of power follow current and returns to its high-impedance state. This standard's test criteria and definitions provide a common engineering language that is beneficial to the user and manufacturer of gas-tube surge-protective devices.

Purpose

The purpose for the revision is to integrate comments made by members of the balloting group during the reaffirmation ballot in 1997. These changes will be limited to some editorial corrections and some technical updates limited to paragraphs 4.1, 4.7, 4.17, additions to Table 1 on page 14 and an additional definition for balanced voltage. Additionally, it is the purpose to harmonize with relevant IEC documents and later IEEE documents to change the title from "Standard test Specification" to "Standard Test Method" and add the word "Components" after Surge-Protective Devices to read: IEEE Standard Test Methods for Gas-Tube Surge-Protective Device Components. The draft itself does not have a purpose clause.

Abstract

Revision Standard - Superseded. This standard applies to gas-tube surge-protective devices for application on systems with voltages, 1000 V rms or 1200 V dc.
 

Document History

  1. IEEE C62.31-2020


    IEEE Standard for Test Methods and Preferred Values for Low-Voltage Gas Discharge Tube Surge-Protective Components

    • Most Recent
  2. IEEE C62.31-2006

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    IEEE Standard Test Methods for Low-Voltage Gas-Tube Surge-Protective Device Components

    • Historical Version
  3. IEEE C62.31-1987


    IEEE Standard Test Specification for Gas-Tube Surge Protective Devices

    • Historical Version