prEN IEC 63640:2026

Vrtnarska razsvetljava - LED-moduli za vrtnarsko razsvetljavo - Varnost

General Information

• Status: Not Published
• Publication Date: 08-Nov-2027
• ICS: 29.140.01 - Lamps in general
• ICS: 29.140.99 - Other standards related to lamps
• Technical Committee: CLC/TC 34 - 'Lamps and related equipment
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 17-Apr-2026
• Due Date: 31-Dec-2026
• Completion Date: 17-Apr-2026
• Ref Project: oSIST prEN IEC 63640:2026 - Horticultural lighting - LED modules for horticultural lighting - Safety

Overview

prEN IEC 63640:2026 - Horticultural lighting – LED modules for horticultural lighting – Safety is an international standard developed by the International Electrotechnical Commission (IEC) and adopted by the European Committee for Electrotechnical Standardization (CLC). This standard specifies comprehensive safety requirements for LED modules used in horticultural lighting installations powered by direct current (DC) up to 1,500 V and alternating current (AC) up to 1,000 V. It addresses the unique safety considerations necessary for LED light sources specifically designed to support plant growth in controlled environments such as greenhouses, vertical farms, and indoor farming systems.

While focusing on safety aspects, this standard does not cover performance characteristics of LED modules. It also excludes other light sources such as LED packages, LED lamps, and OLED light sources, confining its guidance strictly to built-in LED modules intended for horticultural applications.

Key Topics

prEN IEC 63640:2026 covers a range of important safety concerns for horticultural LED modules, ensuring their safe operation and installation. Primary areas addressed by the standard include:

• Classification: LED modules are classified by intended use, including types with no use restrictions and those specifically for industrial or professional applications, which may require supervision by trained personnel.
• General Safety Requirements: The standard references IEC 62031 and aligns with established safety protocols for LED modules.
• Electrical Safety: Ensures LED modules for horticultural lighting meet strict standards to prevent electrical hazards during normal and faulty operation.
• Thermal Safety: Addresses risks associated with heat generation, ensuring safe temperature management.
• Mechanical Safety: Covers structural integrity to avoid hazards such as breakage or exposure to dangerous components.
• Marking and Labeling: Specifies clear identification, including special requirements where photobiological limits are exceeded, following related standards.
• Photobiological Safety: Requires assessment of risks relating to the light emitted by LED modules, referencing established risk groups and test methods to protect end-users and maintenance personnel.
• Fault and Abnormal Conditions: Incorporates requirements to maintain safety under abnormal and fault scenarios, referencing applicable sections of IEC 62031.

Applications

The prEN IEC 63640:2026 standard is vital for a variety of sectors within modern horticulture that utilize LED lighting technologies:

• Greenhouses and indoor farming environments that depend on artificial light for year-round plant cultivation
• Vertical farms where LED modules enable efficient use of space and resources
• Research facilities studying plant growth, productivity, and health under artificial lighting conditions
• Manufacturers and system designers of horticultural lighting products who must demonstrate compliance with international safety protocols

By adhering to this standard, stakeholders can ensure operational safety, reduce liability, and facilitate market access by aligning with recognized requirements for horticultural LED lighting safety.

Related Standards

A number of other international standards are closely linked to the requirements outlined in prEN IEC 63640:2026, supporting comprehensive safety and interoperability in horticultural lighting:

• IEC 62031 – LED modules – Safety requirements: A baseline standard for the general safety of LED modules.
• IEC 63545 – Horticultural lighting – Luminaires for horticultural lighting – Safety: Covers safety of entire lighting fixtures used in horticulture.
• IEC 62471 – Photobiological safety of lamps and lamp systems: Specifies how to evaluate and classify photobiological risks, ensuring the safety of light exposure for humans.

Adopting prEN IEC 63640:2026 alongside these related standards enables robust safety measures and supports innovation in the rapidly growing sector of horticultural LED lighting.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2026
Vrtnarska razsvetljava - LED-moduli za vrtnarsko razsvetljavo - Varnost
Horticultural lighting - LED modules for horticultural lighting - Safety
Ta slovenski standard je istoveten z: prEN IEC 63640:2026
ICS:
29.140.99 Drugi standardi v zvezi z Other standards related to
žarnicami lamps
65.060.70 Vrtnarska oprema Horticultural equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

34/1440/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63640 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-04-17 2026-07-10
SUPERSEDES DOCUMENTS:
34/1306/RVN, 34/1404/CD
IEC TC 34 : LIGHTING
SECRETARIAT: SECRETARY:
United Kingdom Mr Petar Luzajic
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
SC 34A
ASPECTS CONCERNED:
Safety
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the
final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Horticultural lighting - LED modules for horticultural lighting - Safety

PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, o r any part of it,
for any other purpose without permission in writing from IEC.

IEC CDV 63640 © IEC 2026
1 CONTENTS
2 FOREWORD . 2
3 1 Scope . 4
4 2 Normative references . 4
5 3 Terms and definitions . 4
6 4 Classification . 4
7 4.1 General . 4
8 4.2 Classification according to the intended use . 4
9 5 General requirements . 5
10 6 General conditions for tests . 5
11 7 Marking . 5
12 8 Electrical safety . 5
13 9 Thermal safety . 5
14 10 Mechanical safety . 5
15 11 Photobiological safety . 5
16 11.1 General . 5
17 11.2 LED module for Industrial or professional use . 5
18 12 Fault conditions . 5
19 13 Abnormal conditions . 6
IEC CDV 63640 © IEC 2026
21 INTERNATIONAL ELECTROTECHNICAL COMMISSION
22 ____________
23 Horticultural lighting – LED modules for horticultural lighting - Safety
26 FOREWORD
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