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IEEE C62.44
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IEEE C62.44 2016 Edition, December 7, 2016 IEEE Guide for the Application of Low- Voltage (1000 V rms or Less) Surge Protective Devices Used on Secondary Distribution Systems (Between the Transformer Low-Voltage Terminals and the Line Side of the Service Equipment)
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Description / Abstract:
This guide encompasses the application of surge protective devices (SPDs) (secondary arresters) from the secondary terminals of the distribution transformer to the line side of the serviceequipment.
NOTE - For reference, Figure 1 shows that the location covered by this guide is within Category C (form C62.41.1TM).1 The service entrance equipment includes all terminals and busses in the enclosure, and connection made to those terminals or busses with conductors other than load-carrying conductors. SPDs limit transient[surge] overvoltages by diverting surge currents. SPD coordination consider the power systemcharacteristics, the equipment to be protected, and the location of the SPDs. This guide also provides an annex that presents information on risk factors.2
PURPOSE
The purpose of this guide is to address many of the aspects to be considered when applying surge protective between the secondary terminal of the distribution transformer and theline side of the service equipment.
NOTE - For reference, Figure 1 shows that the location covered by this guide is within Category C (form C62.41.1TM).1 The service entrance equipment includes all terminals and busses in the enclosure, and connection made to those terminals or busses with conductors other than load-carrying conductors. SPDs limit transient[surge] overvoltages by diverting surge currents. SPD coordination consider the power systemcharacteristics, the equipment to be protected, and the location of the SPDs. This guide also provides an annex that presents information on risk factors.2
PURPOSE
The purpose of this guide is to address many of the aspects to be considered when applying surge protective between the secondary terminal of the distribution transformer and theline side of the service equipment.