Low Voltage Standard Projects

IEEE-SA Project Authorisation Requests (PARs)
(retrieved 2011-11-23)


PAR Number: PC62.33
Title: Standard for Test Methods and Performance Values of Metal-Oxide Varistor Surge Protective Components
WG 3.6.2
Scope: This standard covers test methods and performance values of Metal-Oxide Varistor (MOV) surge protection components with the following main parameter ranges:
*Packaging: leaded disc-type or surface mount
*Nominal MOV voltage: 5 V to 1200 V
*8/20 surge current rating: 10 A to 70 kA
*8/20 clamping voltage: 10 V to 3 kV
With appropriate component selection, these components could be used for the overvoltage protection of power and signal systems having:
*Continuous AC voltages: 2.5 V rms to 750 V rms
*Continuous DC voltages: 3.3 V to 1000 V
*Peak signal feed voltages: 3.5 V to 850 V
Information is given on manufacturer type testing used to determine environmental performance and rated values.
URL: https://development.standards.ieee.org/get-file/PC62.33.pdf?t=68798900003
Approved: 17-May-2011

PAR Number: PC62.34
Title: Standard for Test Methods and Performance 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 Entrance Equipment)
WG 3.6.9
Scope: This standard applies to surge protective devices designed for application on the low-voltage supply mains (1000 V rms and less, frequency between 48 and 62 Hz) and intended to be connected at locations between, and including, the secondary terminals of the distribution transformer and the line side of the service entrance equipment. Such surge protective devices are also known as secondary arresters. This is coordinated with C62.44 (the application guide), NEC Article 285, and ANSI/UL 1449-2006.
URL: https://development.standards.ieee.org/get-file/PC62.34.pdf?t=63333800003
Approved: 05-Feb-2010

PAR Number: PC62.36
Title: Standard for Test Methods for Surge Protectors Used in Low-Voltage Data, Communications, and Signaling Circuits
WG 3.6.7
Scope: This standard applies to surge protectors for application on multiconductor balanced or unbalanced data, communications, and signaling circuits with voltages equal to or less than 1000 V rms, or 1200 V dc. These surge protectors are designed to limit voltage surges, current surges, or both.
This standard describes the methods of testing and criteria for determining the end of life of electrical surge protectors used in low-voltage data, communications, and signaling circuits. The surge protectors covered are multiple-component series or parallel combinations of linear or nonlinear elements, packaged for the purpose of limiting voltage, current, or both.
This standard is not intended to cover packaged single gas tube, air gap, varistor, or avalanche junction surge-protective devices, which are covered by IEEE Std C62.31, IEEE Std C62.32, IEEE Std C62.33, and IEEE Std C62.35, respectively. Specifically excluded from this standard are test methods for low-voltage power circuit applications. For protection of wire-line communication facilities under the specialized conditions found at power stations, consult IEEE Std 487.
URL: https://development.standards.ieee.org/get-file/PC62.36.pdf?t=20455900003
Approved: 05-Feb-2010

PAR Number: PC62.39
Title: Standard for Test Methods for Self-Restoring Current Limiter Components used in Telecommunication Surge Protectors
WG 3.6.2
Scope:  This standard sets terms, test methods and measurement procedures for series connected, self-restoring current limiter components used in low-voltage telecommunication circuit surge protectors. It is only applicable for components in telecommunications circuits with voltages equal to or less than 1000 V rms or 1200 V dc. The self-restoring current limiters covered by this standard have the following properties: · Excessive current causes a transition from a low-resistance state to a high-resistance state · Reverts to a low-resistance state when the excessive current ends · Directly operated by the current flow through the component · Solid-state (no moving parts) · Withstands specified levels of impulse · Withstands specified AC voltage levels when in the high-resistance state Examples of this type of current limiter technology are positive temperature coefficient step-function thermistors of ceramic or polymeric material and silicon semiconductor based electronic circuits. This standard does not cover self-restoring current limiter components used in other applications, such as heaters, inrush-current limiters or sensing devices. Current interrupting type components, which reduce the current to zero by a mechanical circuit break, are not covered by this standard. In this standard, a telecommunications circuit is a circuit that uses metallic conductors to handle the remote transmission of information, such as data, communications and signalling.
URL: http://standards.ieee.org/board/nes/projects/C62-39.pdf
Approved: 02-Nov-2006

PAR Number: PC62.50
Title: Standard for Performance Criteria and Test Methods for Plug-in (Portable) Multiservice (Multiport) Surge-Protective Devices for Equipment Connected to a 120/240 V Single Phase Power Service and metallic conductive communication line(s)
WG 3.6.10
Scope: The scope of this standard is to define performance criteria and test methods for Plug-in (Portable) Multiservice (Multiport) Surge Protective Devices (MSPD) intended to protect equipment connected to one or more metallic conductive communication line(s) and a 120/240 V single phase AC Power Service, with the neutral grounded at the service equipment. These devices are intended for installation at receptacles supplying power via a branch circuit of the installation, and jointly at receptacles or jacks delivering signals from communications services, for the purpose of providing protected power and signals to a variety of information technology equipment.
URL: https://development.standards.ieee.org/get-file/PC62.50.pdf?t=42662300003
Approved: 27-Mar-200827-Mar-2008

PAR Number: PC62.62a
Title: IEEE Standard Test Specifications for Surge Protective Devices for Low Voltage AC Power Circuits Amendment: Annex C (Informative) - Temporary Overvoltage (TOV) Test
WG 3.6.6
Scope: The amendment is to incorporate a Temporary Overvoltage Test into the Information Annex of the standard.
URL: https://development.standards.ieee.org/get-file/PC62.62a.pdf?t=63336300003
Approved: 05-Feb-201005-Feb-2010

PAR Number: PC62.69
Title: Standard Specifications for Self-Restoring Current Limiter Components used in Telecommunication Surge Protectors
WG 3.6.2
Scope:  This standard provides performance criteria and tables of preferred values for performance for series-connected, self-resetting current limiter components used in low-voltage telecommunication circuit surge protectors. It is only applicable for components in telecommunications circuits with voltages equal to or less than 1000 V rms or 1200 V dc. The test circuits used for performance measurement are from IEEE PC62.39(Test Methods for Self-Restoring Current Limiter Components used in Telecommunication Surge Protectors) The self-restoring current limiters covered by this standard have the following properties: · Excessive current causes a transition from a low-resistance state to a high-resistance state. Reverts to a low-resistance state when the excessive current ends · Directly operated by the current flow through the component · Solid-state (no moving parts) · Withstands specified levels of impulse · Withstands specified AC voltage levels when in the high-resistance state Examples of this type of current limiter technology are positive temperature coefficient step-function thermistors of ceramic or polymeric material and semiconductor based electronic circuits. This standard does not cover self-resetting current limiter components used in other applications, such as heating, inrush-current limiting or temperature sensing. Current interrupting type components, which reduce the current to zero by a mechanical circuit break, are not covered by this standard. In this standard, a telecommunications circuit is a circuit that uses metallic conductors to handle the remote transmission of information, such as data, communications and signalling.
URL: http://standards.ieee.org/board/nes/projects/C62-69.pdf
Approved: 02-Nov-200602-Nov-2006