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Low Voltage SPD Components

Institute of Electrical and Electronics Engineers, Inc. (IEEE) and American National Standards Institute (ANSI) standards, guides, and recommended practices regarding low voltage surge protective device components.

IEEE Std C62.31^TM-1987 (R1998) Standard Test Specifications for Gas-Tube Surge-Protective Devices

Gas-tube surge-protective devices for application on systems with voltages 1000 V rms or 1200 V dc are covered. 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. Test criteria for determining the electrical characteristics of these devices are provided.
WG 3.6.1

IEEE Std C62.32 ^TM -1981 (R2004) Standard Test Specifications for Low-Voltage Air Gap Surge-Protective Devices (Excluding Valve and Expulsion Type Devices)

Revision of IEEE Std C62.32-1981
This standard applies to air gaps for overvoltage protection applications on systems with operating voltages equal to or less than 600 V rms. This standard contains a series of standard tests for determining the electrical characteristics of these air gap devices. This standard’s test criteria and definitions provide a common engineering language beneficial to users and manufacturers of air gap surge protective devices.
Keywords: ac discharge current, air backup gap, air gap, air gap surge protector, back up gap, capacitance, current, discharge current, dc breakdown voltage, dc holdover voltage, dc impulse voltage, dc sparkover voltage, discharge voltage, fail safe, follow on current, impulse life, insulation resistance, maximum single discharge, sparkover, wave shape.
WG 3.6.1

IEEE Std C62.33 ^TM -1982 (R1994) Standard Test Specifications for Varistor Surge-Protective Devices

Varistors for surge-protective applications on systems with dc to 420 Hz frequency and voltages equal to or less than 1000 V rms, or 1200 V dc, are covered. Definitions, service conditions, and a series of test criteria for determining the electrical characteristics of the varistors are provided. The tests are intended as design tests and provide a means of comparing various surge-protective devices.
WG 3.6.2

IEEE Std C62.35 ^TM -1987 (R1993) Standard Test Specifications for Avalanche Junction Semiconductor Surge Protective Devices

A two-terminal avalanche junction surge suppressor for surge-protective application on systems with dc to 420-Hz frequency and voltages equal to or less than 1000 V rms or 1200 V dc is considered. The device is a single package that may be assembled from any combination of series and/or parallel diode chips. Definitions, service conditions, and a series of test criteria for determining its electrical characteristics are provided. These devices are used as surge diverters for limiting transient overvoltages in power and communications circuits.
WG 3.6.2

IEEE Std C62.37 ^TM -1996 (R2002) IEEE Standard Test Specification for Thyristor Diode Surge Protective Devices

This standard applies to two or three terminal, four or five layer, thyristor surge protection devices (SPDs) for application on systems with voltages equal to or less than 1000 V rms or 1200 V dc.
WG 3.6.2

IEEE Std C62.37.1 ^TM -2000 IEEE Guide for the Application of Thyristor Surge Protective Devices

Applications information on fixed voltage and gated thyristor surge protective devices (SPDs) are provided. Key device parameters and their sensitivities are explained. Several worked telecommunication circuit design examples are given.
WG 3.6.2

IEEE Std C62.42 ^TM -1992 (R1999) IEEE Guide for the Application. of Gas Tube and Air Gap Arrester Low-Voltage (Equal to or Less than 1000 Vrms or 1200 Vdc) Surge-Protective Devices

This guide establishes test methods for the evaluation of ESD withstand capability for electronic equipment subassemblies. It includes information about test conditions, test equipment, and test procedures for ESD tests of printed circuit boards and other subassemblies.
WG 3.6.6

IEEE Std. C62.42^TM -2005 IEEE Guide for the Application of Component Surge-Protective Devices for Use in Low-Voltage [Equal to Or Less Than 1000 V (ac) Or 1200 V (dc)] Circuits

Revision to IEEE Std C62.42-1992
Assistance in selecting the most appropriate type of low-voltage component surge-protective device (gas tube, air gap, metal-oxide varistor, or avalanche junction semiconductor) for a particular application is provided. Evaluation of the characteristics of each device to meet specific service requirements is also given.
Keywords: air gap surge arrester, avalanche junction semiconductor, breakdown voltage, communication circuits, gas tube surge arrester, metal-oxide varistor, power circuits, SPD, surge, surge-protective device, surge protector
WG 3.6.3