IEC 62561-6:2023

Overview

IEC 62561-6:2023 - Lightning protection system components (LPSC) Part 6 - specifies requirements and test methods for lightning strike counters (LSCs). The standard applies to devices that count lightning strikes by measuring current in a conductor that is part of a lightning protection system (LPS) or connected to surge protective device (SPD) installations and other conductors. This third edition (2023) replaces IEC 62561-6:2018 and introduces a new classification by internal circuit, an updated tests flowchart (Annex C), and guidance on the applicability of previous tests (Annex D).

Key topics and technical requirements

The standard covers design, documentation, marking, testing and reporting for LSCs with emphasis on reliable operation and traceable test evidence. Major technical topics include:

• Classification

  • Types of LSCs and internal circuit classifications introduced in Edition 3.
  • Installation location categories (e.g., outdoors, indoor, hazardous atmospheres).

• Design, documentation and marking

  • Required product documentation and installation instructions.
  • Durable, legible marking content and durability requirements.

• Electrical performance and counting tests

  • Tests for counting impulse discharge currents and nominal discharge currents.
  • Threshold current, minimum and maximum impulse counting, performance verification and multi‑pulse tests to confirm counting accuracy.

• Environmental and mechanical tests

  • UV resistance, corrosion resistance for metallic parts, and damp/chemical conditioning (Annex B).
  • Mechanical impact tests (pendulum hammer) and IP code verification for ingress protection.

• Electromagnetic compatibility (EMC)

  • Immunity and emission requirements to ensure correct operation in realistic electromagnetic environments.

• Test reporting

  • Structured test reports with specimen description, procedures, instruments, results and pass/fail statements.

Practical applications and users

IEC 62561-6:2023 is practical for anyone specifying, manufacturing, installing, testing or maintaining lightning strike counters:

• Manufacturers and product designers - to design LSCs that meet international test requirements and to classify internal circuit types.
• Test laboratories and certification bodies - to perform standardized electrical, environmental and mechanical tests and to produce compliant test reports.
• Installers, system integrators and asset managers - to select appropriate LSCs for LPS, SPD-protected systems, telecommunications, renewable energy installations (PV), substations and industrial sites.
• Risk assessors and facility owners - to use reliable strike-count data for maintenance planning, SPD replacement strategy, insurance and compliance with IEC 62305 risk-management practices.

Related standards

• IEC 62561 series (other LPSC parts) - for complementary component requirements.
• IEC 62305 series - for lightning protection system design and risk assessment.
• CLC/TS 50703-2 - referenced for components intended for explosive/hazardous atmospheres in CENELEC regions.

Keywords: IEC 62561-6:2023, lightning strike counters, LSCs, lightning protection system components, LPS, testing, classification, EMC, UV resistance, corrosion, IP code.