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PAR List for LV SPD Component Documents
The following is the March 2006 list of SPDC NesCom approved (active) PARs in numerical order, showing the PAR number, Working Group responsible, URL for the complete PAR, Document Title and Scope.
PAR Number: PC62.31 (PE/SPD)
Working Group: WG 3.6.1
URL: http://standards.ieee.org/board/nes/projects/C62-31.pdf
Title: Standard Test Specification for Gas-Tube Surge-Protective Devices
Scope: This standard applies to gas-tube surge-protective devices for application on systems with voltages, 1000 Vrms or 1200 Vdc. These protective devices are designed to limit voltage surges on balanced or unbalanced communication circuits and on power circuits operating from dc to 420 Hz. This standard contains a series of standard test criteria for determining the electrical characteristics of these gas-tube surge-protective devices.
The tests in this standard are intended as design tests as defined under design tests in IEEE 100, Authoritative Standard Dictionary of Electrical and Electronics Terms, and provide a means of comparison among various gas-tube surge-protective devices.
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.
PAR Number: PC62.33 (PE/SPD)
Working Group: WG 3.6.2
URL: http://standards.ieee.org/board/nes/projects/C62-33.pdf
Title: Standard Test Specifications for Varistor Surge-Protective Devices
Scope: This revision will apply to Varistor components for surge protection: Transient overvoltages, EFT, ESD. System voltages up to 1000 Vac. Applications up to 100 MHz, tests of both polarities Statistical life evaluations Characteristics of construction evaluation: monolithic multilayer, surface mount, leaded
PAR Number: PC62.35 (PE/SPD)
Working Group: WG 3.6.2
URL: http://standards.ieee.org/board/nes/projects/C62-35.pdf
Title: Standard Test Specifications for Avalanche Junction Semiconductor Surge Protective Devices
Scope: Revision of existing standard: Add new test methods for device characterization that are required for data circuit applications and multiple components within a single package. These tests will require updating the document to include new terms, definitions, and device description. Some specific test methods to be added are ESD Limiting Voltage, Crosstalk, Insertion Loss, Signal Line Balance, Simultaneous Surge, and Bit error Rate
PAR Number: PC62.37.1 (PE/SPD)
Working Group: WG 3.6.2
URL: http://standards.ieee.org/board/nes/projects/C62-37-1.pdf
Title: Guide for the Application of Thyristor Surge Protective Device Components
Scope: This application guide applies to Thyristor Surge Protective Components (SPCs) used in systems with voltages up to 1000 Vrms or 1200 Vdc. These components are designed to limit overvoltages and divert surge currents by limiting the voltage and switching to a low impedance state. Although telecommunication circuits are the main application of Thyristor SPCs, this guide will also provide useful information for other protection applications. This guide is intended to complement and be used in conjunction with the IEEE Standard Test Specification for Thyristor Diode Surge Protective Devices (IEEE C62.37-1996 (R2002)).
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