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PAR List for LV Power SPD 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: PC62.34 (PE/SPD)
Working Group: WG 3.6.9
URL: http://standards.ieee.org/board/nes/projects/C62-34.pdf
Title: Standard for Performance of Low-Voltage (1000 V rms or less, frequency between 48 Hz and 62 Hz) Surge Protective Devices (Secondary Arresters)
Scope: This standard (C62.34) applies to surge-protective devices designed for application on the low-voltage supply mains (1000 V rms and less, frequency between 48 Hz and 62 Hz). Low-voltage surge-protective devices (secondary arresters) are intended to be connected at locations between, and including, the secondary terminals of the distribution transformer and the main service entrance panel. Surge-protective devices limit transient overvoltages by diverting surge and subsequently automatically interrupting the passage of follow current. This standard will be coordinated with C62.44, the application guide and NEC(2002) article 580.
PAR Number: PC62.41.1 (PE/SPD/LV)
Working Group: WG 3.6.4 Working Group on Surge Characterization
URL: http://standards.ieee.org/board/nes/projects/C62-41-1.pdf
Title: Guide on the Surge Environment in Low-Voltage (1000 V and less) AC Power Circuits
Scope: This is a guide describing the surge voltage, surge current and temporary overvoltage environment in low-voltage (up to 1000 V rms) ac power circuits. This scope does not include other power disturbances such as notches, sags and noise. The surges considered in this guide do not exceed one-half period of the normal mains waveform in duration. They can be periodic or random events and can appear in any combination of line, neutral, or grounding conductors. They include those surges with amplitudes, durations, or rates of change sufficient to cause equipment damage or operational upset. While surge-protective devices (SPDs) acting primarily on the amplitude of the voltage are often applied to divert the damaging surges, the upsetting surges may require other remedies. The rationale for including a description of temporary overvoltages (TOVs) in this guide on the surge environment is given in the following sub-clause 1.2.
PAR Number: PC62.41.2 (PE/SPD/LV)
Working Group: WG 3.6.4 Working Group on Surge Characterization
URL: http://standards.ieee.org/board/nes/projects/C62-41-2.pdf
Title: Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and less) AC power circuits
Scope: The scope of this recommended practice is to characterize the surge environment at locations on ac power circuits described in IEEE Std C62.41.1-2002 by means of standardized waveforms and other stress parameters. The surges considered in this recommended practice do not exceed one half-cycle of the normal mains waveform (fundamental frequency) in duration. They can be periodic or random events and can appear in any combination of line, neutral, or grounding conductors. They include surges with amplitudes, durations, or rates of change sufficient to cause equipment damage or operational upset (see Figure 1). While surge protective devices (SPDs) acting primarily on the amplitude of the voltage or current are often applied to divert the damaging surges, the upsetting surges might require other remedies.
PAR Number: PC62.44 (PE/SPD)
Working Group: WG 3.6.9
URL: http://standards.ieee.org/board/nes/projects/C62-44.pdf
Title: Guide for the Application of Low-Voltage (1000 Volts rms or Less) Surge Protective Devices Used on Secondary Distribution Systems (Between the Transformer Low-Voltage Terminals and the Load Side of the Service Entrance Panel)
Scope: This guide encompasses the application of surge protective devices (secondary arresters) from the secondary terminals of the distribution transformer to the load side of the distribution panel. This guide will provide insight into using the standard for performance of low-voltage surge-protective devices on ac mains (I000V V rms and less. frequency 48 and 62 Hz). Also, this guide will address coordination from the primary arrester to sensitive loads and grounding practices.
PAR Number: PC62.45 (PE/SPD/LV)
Working Group: WG 3.6.4 Working Group on Surge Characterization
URL: http://standards.ieee.org/board/nes/projects/C62-45.pdf
Title: Recommended Practice on Surge Testing for Equipment Connected to Low-Voltage AC Power Circuits
Scope: The scope of this recommended practice is the performance of surge testing on electrical and electronic equipment connected to low-voltage ac power circuits, specifically using the recommended test waveforms defined in IEEE Std C62.41.2.-2002.1 Nevertheless, these recommendations are applicable to any surge testing, regardless of the specific surges that may be applied.
PAR Number: PC62.50 (PE/SPD/LV)
Working Group: WG 3.6.10
URL: http://standards.ieee.org/board/nes/projects/C62-50.pdf
Title: Standard for Performance Criteria and Test Methods of Plug-in Multiport (Multiservice) Surge-Protective Devices for Equipment Connected to 120/240 V Single Phase Power Service and Communications Lines
Scope: The scope of this project is to define performance criteria and test methods of Plug-in Multiport (Multiservice) surge protective devices to protect equipment connected to one or more communication lines and 120/240 V single phase AC power, with the neutral grounded at the service equipment.
PAR Number: PC62.51 (PE/SPD/LV)
Working Group: WG 3.6.10
URL: http://standards.ieee.org/board/nes/projects/C62-51.pdf
Title: Standard for Performance Criteria and test Methods of Hardwired Multiport (Multiservice) Surge-Protective Devices for Equipment Connected to 120/240 V Single Phase Power Service and Communication Lines
Scope: The scope of the project is to define performance criteria and test methods of Hardwired Multiport (Multiservice) surge-protective devices to protect equipment connected to one or more communications lines and 120/240 V single phase AC power, with the neutral grounded at the service equipment.
PAR Number: PC62.62 (PE/SPD/LV)
Working Group: WG 3.6.6 Low Voltage AC Power Circuit Protective Devices
URL: http://standards.ieee.org/board/nes/projects/C62-62.pdf
Title: Standard Test Specifications for Surge-Protective Devices for Low Voltage AC Power Circuits
Scope: Scope of existing document is supplied below. This revision will expand detail on the basic and additional tests prescribed in the existing document based on field experiences since the publication of the current version in 2004. The document will also be closely aligned with draft IEC and draft NEMA documents with similar test specification content. Existing Scope (this will not change) This standard applies to surge-protective devices intended to be installed on the load side of the main service disconnect packaged to be connected to 50 or 60 Hz ac power circuits rated at 1000 volts (rms) or less. Performance characteristics and standard methods for testing and rating are established for these devices that may be composed of any combination of components. The tests in this standard are aimed at providing comparisons among the variety of surge-protective devices available. Many of the tests described in this standard may stress a surge-protective device. Care should be taken to ensure that stressed devices are not compared with unstressed devices unless that is the desired intent. The suppression characteristics of some surge-protective devices change with successive surging as well as with changes in the environment. These changes may be permanent in nature. Selection and careful organization of appropriate tests can reduce the quantity of test samples needed. The voltage and energy levels employed in the majority of the tests described in this document are hazardous and appropriate cautions must be exercised in their performance.
PAR Number: PC62.72 (PE/SPD/LV)
Working Group: Low Voltage Circuit Protective Devices Working Group
URL: http://standards.ieee.org/board/nes/projects/C62-72.pdf
Title: Guide for the Application of Surge Protective Devices for Low Voltage (1000 Volts or Less) AC Power Circuits
Scope: The transient overvoltages or surge events that are described and discussed in this guide are those that originate outside of a building or facility and impinge on a power distribution system through the service entrance conductors. Transient overvoltages or surge events that originate from equipment within a specific facility are not within the scope of this document.
This guide applies to:
- Surge Protective Devices (SPDs) that are manufactured for connections to 50 or 60Hz ac power circuits that are rated between 100Vac - 1000Vac.
- SPDs that are specifically identified, labeled, or listed for connections on the load side of the service entrance main overcurrent protective device.
- SPDs manufactured for use in an association with electrical power distribution equipment such as load centers, motor control centers, panelboards, switchboards, switchgear, and end-use equipment installed in commercial and industrial facilities.
- SPDs that contain at least one nonlinear component for either diverting surge currents or dissipating surge energy, or both. Examples of such nonlinear components are metal oxide varistors, silicon avalanche diodes, spark gap tubes, or thyristors.
This guide does not cover :
- SPDs identified, labeled, or tested as a Secondary Surge Arrester intended for connections on the line side of the service entrance main overcurrent protective device.
- SPDs associated with retail and consumer appliances and components for residential use.
- This guide does not specify or set limits on insulation levels of any components associated with power distribution systems or end use equipment.
- Individual SPD component specifications associated with any specific manufacturer of surge protection products.
- Ferroresonators, motor-generators, uninterruptible power supplies, and filters containing only inductive or capacitive components are not considered SPDs in the guide.
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