IEEE Std C62.82.2-2022 PDF

Full title and description

IEEE C62.82.2-2022 — IEEE Guide for the Application of Insulation Coordination. This guide presents calculation methods and worked examples for selecting phase-to-ground and phase-to-phase insulation withstand voltages (for example BIL and BSL) and describes insulation coordination approaches for air-insulated systems such as transmission lines, substations and equipment.

Abstract

This guide gives practical methods and illustrative examples to support the application of the companion standard for insulation coordination. It explains calculation procedures for determining basic lightning impulse levels (BIL) and basic switching impulse levels (BSL), discusses atmospheric and site correction factors, clearances, shielding/backflash considerations, protective margins and coordination with system overvoltages and protective devices. The material is intended to help engineers apply insulation-selection procedures to three‑phase AC systems and to typical air‑insulated installations.

General information

• Status: Active standard (Guide).
• Publication date: Published 17 March 2023 (Board approval 3 December 2022).
• Publisher: Institute of Electrical and Electronics Engineers (IEEE), Power & Energy Society development group.
• ICS / categories: Electrical insulation in general — ICS 29.080.01 (protective relaying / insulation coordination area).
• Edition / version: Designation C62.82.2-2022 (Guide to insulation coordination practices; companion to C62.82.1 series).
• Number of pages: 83 pages (published electronic edition).

Key bibliographic and status details above are taken from the IEEE standards record and vendor listings.

Scope

The guide supports the selection of equipment insulation withstand voltages and the practical application of insulation coordination principles for three‑phase AC systems (generally covering systems above the low‑voltage range defined in the companion standard). It addresses phase‑to‑ground and phase‑to‑phase insulation, standard withstand levels, methods for estimating overvoltage stresses, and coordination of clearances, shielding and protective margins for transmission lines, substations and air‑insulated equipment.

Key topics and requirements

• Calculation methods for selection of basic lightning impulse level (BIL) and basic switching impulse level (BSL).
• Phase‑to‑ground and phase‑to‑phase insulation configuration and withstand selection.
• Atmospheric and altitude correction factors, crest values and statistical factors for lightning.
• Clearance and coordination rules for air‑insulated systems, shielding and backflash assessment.
• Protective margins and coordination with surge protective devices and system overvoltage characteristics.
• Worked examples and practical application guidance for transmission lines, substations and equipment.

Typical use and users

Primary users are power system design engineers, substation and transmission planning engineers, equipment manufacturers, protection and surge specialists, testing laboratories and consultants involved in insulation design and coordination. The guide is used when establishing equipment withstand levels, specifying clearances and verifying coordination between insulation levels and protective devices in new designs, upgrades, and forensic investigations after insulation or surge-related incidents.

Related standards

This guide is the application companion to IEEE Std C62.82.1 (Insulation Coordination — Definitions, Principles and Rules) and replaces the earlier guide IEEE 1313.2-1999. It should be used together with IEEE C62.82.1 and related power‑system and insulation test standards when defining withstand levels and test requirements.

Keywords

Insulation coordination; BIL; BSL; basic lightning impulse level; basic switching impulse level; phase‑to‑ground; phase‑to‑phase; clearances; atmospheric correction factor; backflash; shielding; protective margin; overvoltage; surge protective devices; transmission lines; substations.

FAQ

Q: What is this standard?

A: IEEE C62.82.2-2022 is a guide — the IEEE Guide for the Application of Insulation Coordination — that provides practical calculation methods and examples for selecting insulation withstand voltages and applying insulation coordination principles.

Q: What does it cover?

A: It covers methods for selecting BIL and BSL for equipment, phase‑to‑ground and phase‑to‑phase insulation selection, atmospheric/site corrections, clearances, shielding/backflash issues, protective margins, and worked examples for air‑insulated systems such as transmission lines and substations.

Q: Who typically uses it?

A: Power system and substation design engineers, equipment manufacturers, protection and surge specialists, standards authors and testing laboratories use the guide to set insulation levels and validate coordination between insulation and protective measures.

Q: Is it current or superseded?

A: As published (designation C62.82.2-2022) the guide is current/active; it supersedes IEEE 1313.2-1999 and was published by IEEE on 17 March 2023 (Board approval 3 December 2022). Users should check IEEE records or national catalogues for any later amendments or revisions.

Q: Is it part of a series?

A: Yes — it is the application guide paired with the companion standard series on insulation coordination (IEEE C62.82.1 and related documents). It is intended to be used alongside the normative definitions and principles provided in the companion standard.

Q: What are the key keywords?

A: Insulation coordination, BIL, BSL, clearances, atmospheric correction, backflash, shielding, protective margin, overvoltage, surge protection.