IEEE C62.43-1999 pdf download IEEE Guide for the Application of Surge Protectors Used in Low-Voltage (Equal to or Less than 1000 V rms or 1200 Vdc) Data, Communications, and Signaling Circuits
1.Scope
This guide provides assistance in selecting the most appropriate type of surge protector for a particular data.
communication,and/or signaling circuit application.
This guide is divided into four clauses. Clause 1 provides an overview and the scope of this guide. Clause 2ists references to other standards. Clause 3 explains the electrical environment in which surge protectorsintended for data, communications, and signaling circuits shall operate. Clause 4 gives a description and thetheory of the operation of surge protectors used in data, communications, and signaling circuit applications.and also gives guidance in applying and interpreting the respective test specifications for the protectoicharacteristics.
This guide also contains informative Annex A. which supplies examples of applications of surge protectorsused in low-voltage data, communications, and signaling circuits. The annex provides additional informationfor understanding and using this guide, but it is not part of the guide. Annex B contains a bibliography of thereferences used in developing this guide
This guide applies to surge protectors used in balanced or unbalanced data. communications and signalingcircuits with voltages equal to or less than 1000 Vrms or 1200 Vdc. The surge protectors covered are multi-le-component series or parallel combinations of linear or nonlinear elements, packaged for the purpose oflimiting voltagecurrent,or both.
This guide is intended to complement IEEE Std C62.36-1994.’ The definitions used in this application guideand the test methods standard are the same. For terms not defined in the guide or the standard, see The lEEEStandard Dictionary for Electrical and Electronics Terms/B31.2
This guide is not intended to apply to packaged single component gas tube or air gap arresters/protectors.which are covered by IEEE Std C62.42-1992
The purpose of this guide is to enable an understanding and an evaluation of the functions of the varioustypes of multiple-component data, communications, and signaling circuit protectors in terms of particularapplications. Consideration is given to the characteristics of multiple-component protectors and the conceptsnecessary to choose the appropriate product and to interpret its specifications.
2.References
This guide shall be used in conjunction with the following standards and publications. When the followingstandards and publications are superseded by an approved revision, the revision shall apply.
Accredited Standards Committee C2-1997, National Electrical Safety Code@,NESC3
ANSI/NFPA 70-1999,National Electrical Code NEC4
EEE Std C62.36-1994,IEEE Standard Test Methods for Surge Protectors Used in Low-Voltage Data, Com-munications,and Signaling Circuits.
IEEE Std C62.42-1992 (Reaff 1999), IEEE Guide for the Application of Gas Tube and Air Gap ArresterLow-Voltage (Equal to or Less than 100 Vrms or 1200 Vdc) Surge-Protective Devices.
3.Electrical environment
For a description of the electrical environment in which these protectors are intended to be used, refer toClause 3 of IEEE Std C62.42-1992.
4. Description and theory of operation
This clause provides the description and theory of operation of surge protectors used in low-voltage data.communications. and signaling circuits. These protectors comprise one or more series or parallel elementsused to limit excessive voltages. currents. or both, while maintaining the svstem operation to a given pertor.mance level.
IEEE C62.43-1999 pdf download
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