IEC TS 62561-8-2018 PDF

Full title and description

St IEC TS 62561-8-2018 — Lightning protection system components (LPSC) - Part 8: Requirements for components for isolated LPS. This Technical Specification specifies requirements and type tests for insulating stand-offs (used with air-termination systems and down-conductors to maintain separation distance) and for insulating down‑conductors (including their specific fasteners) intended to allow or reduce the separation distance between live or conductive parts and a lightning protection system.

Abstract

IEC/TS 62561-8:2018 defines performance, design and test criteria for components used in electrically isolated lightning protection systems (isolated LPS). The document covers mechanical, electrical and environmental tests (including corrosion and UV resistance) and specifies flow‑charts and test sequences for verifying insulating stand-offs and insulating down‑conductors to ensure that separation distances are maintained or may be reduced safely.

General information

• Status: Published (Technical Specification, in force as the 2018 edition).
• Publication date: 09 January 2018 (Edition 1.0).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.020 (Electrical engineering in general); 91.120.40 (Lightning protection).
• Edition / version: Edition 1.0 (IEC/TS 62561-8:2018).
• Number of pages: 52 pages (official IEC publication pagination).

Scope

IEC/TS 62561-8:2018 applies to components intended for use in isolated lightning protection systems (isolated LPS). It gives requirements and test procedures for insulating stand‑offs (mounting/insulating supports used with air‑termination systems and down‑conductors) and for insulating down‑conductors and their dedicated fasteners where these components are designed to maintain or to permit a reduced separation distance between the lightning protection system and nearby live or conductive parts. The scope also includes environmental and electrical testing and flow‑charts to guide conformity assessment.

Key topics and requirements

• Definition and classification of insulating stand‑offs and insulating down‑conductors (design intent and application constraints).
• Mechanical and electrical type tests to verify dielectric performance and mechanical strength under service and lightning‑impulse conditions.
• Environmental tests including corrosion resistance and ultraviolet (UV) resistance for materials exposed outdoors (normative annexes).
• Flow‑charts and test sequences for conformity assessment of insulating stand‑offs and insulating down‑conductors (normative annexes C and D).
• Requirements for fasteners and special fixation methods associated with insulating down‑conductors when used to reduce separation distance.
• Reference to high‑voltage impulse testing methods to determine correction factors and to evaluate dielectric behaviour (informative/annex material).

Typical use and users

This Technical Specification is used by lightning protection designers and specifiers, component manufacturers, conformity‑assessment and testing laboratories, installation contractors, building services engineers, and certification bodies involved in the design, manufacture, testing and approval of components for isolated lightning protection systems. It is also used by national standards bodies when adopting or referencing IEC material for national/regional standards.

Related standards

IEC/TS 62561-8 is part of the IEC 62561 series (LPSC: Lightning protection system components) which covers various component types for lightning protection systems. It is commonly used alongside the IEC 62305 series (general principles and risk assessment for lightning protection). National adoptions and related regional versions (for example EN/IEC national adoptions) exist and some national bodies have produced parallel publications or adoptions.

Keywords

Lightning protection, isolated LPS, insulating stand‑offs, insulating down‑conductors, separation distance, type testing, corrosion resistance, UV resistance, IEC 62561, LPSC.

FAQ

Q: What is this standard?

A: IEC/TS 62561-8:2018 is a Technical Specification that sets out requirements and test methods for components used in electrically isolated lightning protection systems, specifically insulating stand‑offs and insulating down‑conductors (and their fasteners). Publication date: 09 January 2018.

Q: What does it cover?

A: It covers design classification, mechanical and electrical type tests, environmental tests (including corrosion and UV resistance), flow‑charts for test sequences, and specific requirements for fastenings and fixation methods where insulating components are used to maintain or reduce separation distances.

Q: Who typically uses it?

A: Component manufacturers, lightning protection designers, testing and certification laboratories, installation contractors, national standards bodies and consultants involved in lightning protection system design and approval.

Q: Is it current or superseded?

A: The 2018 Technical Specification (Edition 1.0) remains the published IEC/TS text (published 09 January 2018). Work to develop IEC 62561-8 as a full IEC standard (new edition/project IEC 62561-8 ED1) has progressed in the IEC system — final text/FDIS activity was recorded in early 2026 — indicating an update/upgrade process is underway; users should check national adoption status and the IEC work programme for the latest formal publication date. (Example milestone: final text received / FDIS registered 20 January 2026 as shown in IEC project tracking).

Q: Is it part of a series?

A: Yes — it is Part 8 of the IEC 62561 series (Lightning protection system components, LPSC). Other parts of IEC 62561 cover different component groups; IEC 62305 remains the principal series for overall lightning protection principles and risk assessment.

Q: What are the key keywords?

A: Insulating stand‑off, insulating down‑conductor, isolated LPS, separation distance, type tests, corrosion, UV, IEC 62561, lightning protection components.