IEEE Std C62.41.1-2002 (2008) PDF

Full title and description

IEEE Guide on the Surge Environment in Low-Voltage (1000 V and less) AC Power Circuits — IEEE Std C62.41.1-2002 (reaffirmed 2008). This guide describes the surge voltage, surge current, and temporary overvoltages (TOV) environment in low-voltage (up to 1000 V rms) AC power circuits, and provides the technical background used in defining representative surge waveforms and location categories for surge assessment and protection.

Abstract

This document provides a systematic description of the types, magnitudes, waveforms, sources, and occurrence characteristics of surge events that affect low-voltage AC power circuits. It defines location categories for relative surge exposure, describes representative surge and combination waveforms used in testing and selection of protection, and discusses temporary overvoltage (TOV) phenomena. The guide is intended to be used together with IEEE Std C62.41.2 (characterization of surges) and IEEE Std C62.45 (surge testing recommended practice) as part of a trilogy on surge environment and testing.

General information

• Status: Inactive — Inactive/Reserved (originally published as IEEE C62.41.1-2002; reaffirmed 2008; later inactivated).
• Publication date: Board approval November 11, 2002; published April 11, 2003; reaffirmed December 10, 2008.
• Publisher: Institute of Electrical and Electronics Engineers (IEEE).
• ICS / categories: Electrical engineering — surge protection / power quality (related ICS entries such as 29.120.50 and categories addressing surge protective devices and low-voltage power circuits).
• Edition / version: IEEE C62.41.1-2002 (designated R2008 when reaffirmed in 2008).
• Number of pages: Approximately 173 pages (PDF/print).

Scope

The guide covers surge voltages and currents and temporary overvoltages occurring on low-voltage AC power circuits (up to 1000 V rms). It excludes other power-quality disturbances such as notches, sags, and electrical noise. The surges considered typically do not exceed one half-cycle of the mains waveform and include externally impressed surges (e.g., lightning-initiated) and internally generated surges from switching or faults. The scope is focused on defining the environment and representative waveforms used for equipment assessment and selection of surge mitigation measures.

Key topics and requirements

• Definition and characterization of surge waveforms (standard and additional representative waveforms used for testing and evaluation).
• Location categories (A, B, C) that classify surge exposure relative to service entrance and distribution within a structure.
• Parameters for surge amplitude, duration, source impedance, and energy relevant to low-voltage equipment performance and damage mechanisms.
• Discussion of Temporary Overvoltages (TOV) and their relevance to surge protection design and device coordination.
• Guidance on how the surge environment descriptions inform selection and application of surge protective devices (in conjunction with the companion documents C62.41.2 and C62.45).

These topics are presented as guidance rather than mandatory test specifications; test waveforms and procedures are addressed in the companion recommended practice and characterization documents.

Typical use and users

Engineers and designers of electrical and electronic equipment that connect to low-voltage AC power systems, manufacturers of surge protective devices (SPDs), test laboratories, utility engineers, consultants on power quality and facility protection, and standards committees use this guide to understand expected surge environments and to select appropriate protective measures and tests. It is also used to inform product test specifications and to harmonize testing approaches across related standards.

Related standards

IEEE C62.41.2-2002 — Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and less) AC Power Circuits (defines representative test waveforms and characterization methods). IEEE C62.45 — Recommended Practice on Surge Testing for Equipment Connected to Low-Voltage AC Power Circuits (test procedures). Additional related documents include IEEE C62.48 (interaction between SPDs and power system disturbances) and earlier editions of C62.41 (1980, 1991). These documents together form the “trilogy” and companion guidance for surge environment, characterization, and testing.

Keywords

surge environment, transient overvoltage, temporary overvoltage (TOV), low-voltage AC, surge waveform, ring wave, combination wave, location categories A/B/C, surge protective device (SPD), surge testing, power quality.

FAQ

Q: What is this standard?

A: IEEE Std C62.41.1-2002 is a guide that documents the surge environment (voltages, currents, and TOVs) encountered on low-voltage (up to 1000 V rms) AC power circuits and provides the technical basis for representative surge waveforms and location classifications.

Q: What does it cover?

A: It covers types and characteristics of surge events affecting low-voltage power circuits, including typical magnitudes, durations, source impedance, waveform shapes, and the definition of location categories used to describe relative exposure. It does not address sags, notches, or general power quality noise. Test procedures are covered in companion documents.

Q: Who typically uses it?

A: Equipment designers, SPD manufacturers, test laboratories, utilities, consultants, and standards developers use the guide to understand surge exposure and to align testing and protection strategies with representative surge conditions.

Q: Is it current or superseded?

A: The document was originally approved in 2002 (published April 11, 2003) and reaffirmed in 2008. According to IEEE records it is now listed as Inactive/Reserved and was inactivated on March 25, 2021; users should verify current normative guidance and any newer or replacement documents before relying on it as the latest practice.

Q: Is it part of a series?

A: Yes — it is part of a set of companion documents (commonly described as a trilogy) addressing surge environment (C62.41.1), surge characterization and representative waveforms (C62.41.2), and surge testing practices (C62.45), plus additional related guides such as C62.48.

Q: What are the key keywords?

A: Surge, transient overvoltage, temporary overvoltage (TOV), low-voltage AC, surge waveform, ring wave, combination wave, location category, surge protective device (SPD).