IEC 62561-5:2023

Overview

IEC 62561-5:2023 is the third edition of the International Electrotechnical Commission standard covering lightning protection system components (LPSC) specifically for earth electrode inspection housings (earth housings) and earth electrode seals. It specifies requirements, classification and test procedures for components installed in the ground as part of a lightning protection system (LPS). This edition cancels and replaces IEC 62561-5:2017 and introduces a technical revision, notably adding a classification of earth electrode seals.

Key topics and technical requirements

• Scope and purpose: Requirements and tests for earth electrode inspection housings and earth electrode seals used with LPS (referencing design principles in IEC 62305).
• Classification
  • Earth housings: classes H (heavy duty), M (medium duty) and L (light duty) according to load-bearing capability.
  • Earth electrode seals: classified by installation medium (e.g., earth electrode in watertight housing; earth electrode through watertight concrete).
• Design and safety: Components must be durable, stable and safe for normal use per manufacturer instructions, including use in hazardous atmospheres where additional requirements apply.
• Documentation and marking: Requirements for installation instructions, documentation, and durable, legible marking (content and longevity).
• Tests and acceptance criteria:
  • Load tests for earth housings (different arrangements and acceptance criteria).
  • Sealing tests for earth electrode seals, including watertightness under pressure and concrete penetration tests.
  • Marking tests, EMC considerations, and overall test-report structure (test procedures, equipment, results and pass/fail statements).
• Test reporting: Required structure and information for conformity test reports.

Practical applications and who uses this standard

• Manufacturers of earth electrode inspection housings and seals use IEC 62561-5:2023 to design and certify products for mechanical strength, sealing performance and marking.
• Specifiers and consultants (lightning protection designers and electrical engineers) reference the standard when selecting appropriate housings/seals for buildings and infrastructure.
• Installers and contractors rely on the documentation and installation requirements to ensure correct on-site assembly and safe operation, including installations in hazardous atmospheres.
• Testing laboratories and certification bodies apply the specified test procedures and report formats to assess compliance.
• Building owners and asset managers benefit from selecting compliant components that reduce risk of water ingress and ensure safe earth terminations in lightning protection systems.

Related standards

• IEC 62305 series (protection against lightning)
• EN 124 and EN 1253 series (different requirements/test procedures referenced as notes)

Keywords: IEC 62561-5:2023, earth electrode inspection housings, earth electrode seals, lightning protection system components, LPSC, load test, sealing test, EMC, IEC 62305.