SIST EN IEC 63129:2020/A1:2025

Determination of inrush current characteristics of lighting products (IEC 63129:2020/AMD1:2025)

Bestimmung der Eigenschaften des Einschaltstroms von Beleuchtungsprodukten (IEC 63129:2020/AMD1:2025)

Détermination des caractéristiques du courant d'appel des produits d'éclairage (IEC 63129:2020/AMD1:2025)

Določitev značilnosti vklopnega toka pri izdelkih za razsvetljavo (IEC 63129:2020/AMD1:2025) - Dopolnilo A1

General Information

• Status: Not Published
• Public Enquiry End Date: 31-Dec-2024
• ICS: 29.140.01 - Lamps in general
• ICS: 29.140.99 - Other standards related to lamps
• Technical Committee: STV - Steklo, svetloba in razsvetljava v gradbeništvu
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-Jan-2026
• Due Date: 12-Mar-2026
• Ref Project: EN IEC 63129:2020/A1:2025 - Determination of inrush current characteristics of lighting products

Relations

• Amends: SIST EN IEC 63129:2020 - Determination of inrush current characteristics of lighting products (IEC 63129:2020)
• Effective Date: 12-Mar-2024

Overview

SIST EN IEC 63129:2020/kFprA1:2025 is an amendment to the international standard for the determination of inrush current characteristics of lighting products. Published by the CLC (European Committee for Electrotechnical Standardization), this amendment refines and updates the measurement methods and application guidance for inrush current in lighting equipment. The goal of this standard is to ensure accurate characterization of the transient current surge that occurs when lighting products are switched on, supporting optimal electrical design and installation.

The standard is critical for manufacturers, installers, and electrical engineers working with lighting systems, helping to improve the reliability, compatibility, and safety of lighting installations concerning inrush currents.

Key Topics

• Inrush Current Measurement
  The amendment specifies improved procedures and notes for measuring peak inrush currents and pulse durations in lighting products. For example, it notes that a 400 A current level is adequate for typical office applications but highlights the need for higher current levels for high-power applications such as floodlighting.

• Application of Inrush Current Characteristics
  Annex A has been updated to clarify practical uses of inrush current data:

  • Selecting compatible components such as switches and overcurrent protection devices.
  • Determining the maximum number of lighting products that can safely operate on a circuit without nuisance tripping.

• Matching Lighting Products with Switches and Circuit Breakers
  The standard provides guidance on comparing the peak inrush current (I_peak) and pulse duration (t) of a Device Under Test (DUT) against manufacturer-supplied ratings of switches or circuit breakers. Proper matching ensures functional reliability and avoids premature contact erosion or unintentional tripping.

• Use of Diagrams to Determine Device Limits
  Graphical methods illustrate correlating the inrush current characteristics of lighting devices with circuit breaker or switch withstand capacities. These diagrams help specify how many lighting devices can be switched on by a particular protective device or switch while maintaining system integrity.

• Switch Contact Wear and Welding Considerations
  The amendment discusses how inrush currents impact switch contacts, illuminating the importance of considering inrush energy (I_peak² × t) to prevent contact failure in switches and electronic controls.

Applications

• Electrical Installation Design
  Enables electrical design engineers and installers to select appropriate circuit breakers, switches, and protective devices by using standardized inrush current data from lighting product manufacturers.

• Lighting Product Manufacturer Specifications
  Assists manufacturers in providing standardized inrush current data, enhancing transparency and interoperability with electrical components in building installations.

• Energy Management and Safety
  Helps facilities managers and safety engineers ensure that lighting loads do not exceed protective device capacities, thereby preventing accidental power interruptions or electrical hazards.

• High-Power Lighting Systems
  Provides foundational data for designing floodlighting and other high power lighting installations that require accurate inrush current handling.

Related Standards

• IEC 60669-2-1:2021 – Switches for household and similar fixed electrical installations, Part 2-1: Particular requirements for electronic control devices. This standard relates closely when assessing switch capability to handle inrush currents.

• Other standards concerning lamps and lighting controlgear, useful for comprehensive lighting system design and evaluation.

Practical Value

Implementing SIST EN IEC 63129:2020/kFprA1:2025 facilitates:

• Greater reliability in lighting system operations by preventing circuit breaker nuisance trips and switch failure.
• Improved standardization across international markets through harmonized measurement and application protocols.
• Enhanced safety by correctly matching inrush current data with protective device ratings.
• Optimized economic efficiency by avoiding over-specification and unnecessary equipment costs.

By integrating the procedures and applications in this amendment, stakeholders in the lighting industry can deliver safer, more efficient, and longer-lasting lighting solutions tailored for modern electrical installations.

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 63129:2020/oprA1:2024
01-december-2024
Določitev značilnosti vklopnega toka pri izdelkih za razsvetljavo - Dopolnilo A1
Amendment 1 - Determination of inrush current characteristics of lighting products
Bestimmung der Eigenschaften des Einschaltstroms von Beleuchtungsprodukten
Amendement 1 - Détermination des caractéristiques du courant d'appel des produits
d'éclairage
Ta slovenski standard je istoveten z: EN IEC 63129:2020/prA1:2024
ICS:
29.140.99 Drugi standardi v zvezi z Other standards related to
žarnicami lamps
SIST EN IEC 63129:2020/oprA1:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN IEC 63129:2020/oprA1:2024

SIST EN IEC 63129:2020/oprA1:2024

34/1235/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63129/AMD1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-10-25 2025-01-17
SUPERSEDES DOCUMENTS:
34/1183/CD, 34/1203A/CC
IEC TC 34 : LIGHTING
SECRETARIAT: SECRETARY:
United Kingdom Mr Petar Luzajic
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 23,SC 23B,SC 23E,SC 34A,SC 34C,SC 121A
ASPECTS CONCERNED:
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:
Amendment 1 - Determination of inrush current characteristics of lighting products

PROPOSED STABILITY DATE: 2027
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
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SIST EN IEC 63129:2020/oprA1:2024
IEC CDV 63129 A1 © IEC 2024 2 34/1235/CDV

1 FOREWORD
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38 This amendment has been prepared by IEC technical committee 34: Lighting. It is an
39 International Standard.
40 This edition includes a modification of Annex A: Application of inrush current characteristics.
42 The text of this amendment is based on the following documents:
Draft Report on voting
XX/XXX/FDIS XX/XXX/RVD
44 Full information on the voting for its approval can be found in the report on voting indicated in
45 the above table.
46 The language used for the development of this International Standard is English.
47 This document was drafted in accordance with  and developed in accordance with
48 ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement available at
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51 The committee has decided that the contents of this document will remain unchanged until the
52 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
53 specific document. At this date, the document will be
54 • reconfirmed,
55 • withdrawn,
SIST EN IEC 63129:2020/oprA1:2024
IEC CDV 63129 A1 © IEC 2024 3 34/1235/CDV
56 • replaced by a revised edition, or
57 • amended.
SIST EN IEC 63129:2020/oprA1:2024
IEC CDV 63129 A1 © IEC 2024 4 34/1235/CDV
60 AMENDMENT 1 - DETERMINATION OF INRUSH CURRENT
61 CHARACTERISTICS OF LIGHTING PRODUCTS
...