IEC 61347-2-11:2024

Overview

IEC 61347-2-11:2024 is an international standard published by the International Electrotechnical Commission (IEC) that specifies safety requirements for miscellaneous electronic circuits used with luminaires. These circuits operate on DC supplies up to 1500 V or AC supplies up to 1000 V at 50 Hz or 60 Hz. As the second edition, issued in June 2024, it replaces the first edition from 2001 and its 2017 amendment, introducing significant technical revisions to enhance safety and harmonize requirements with related standards.

This standard primarily focuses on the safety aspects of electronic control circuits integrated into lighting fixtures, addressing issues such as insulation, marking, terminal requirements, earthing, and output working voltage determination. It complements the general safety requirements covered in IEC 61347-1:2024 and is intended to be used alongside it to ensure comprehensive safety for luminaires’ electronic controlgear.

Key Topics

• Scope and Application Specifies safety criteria for various miscellaneous electronic circuits including:

  • Electronic controlgear circuits (e.g., compliant with IEC 62386 series, IEC 63128, or IEC 62756-1)
  • Daylight and presence sensor circuits
  • EMC assistance circuits
  • Devices handling intermittence and earth leakage
  • Other miscellaneous electronics within TC 34 scope not covered by another TC 34 standard.

• Safety and Marking Requirements

  • Mandatory markings for durability and legibility to ensure clear identification
  • Clear information provision about the circuits, operational limits, and warnings

• Electrical Insulation and Protection

  • Protection against accidental contact with live parts
  • Insulation resistance and dielectric strength tests
  • Requirements for creepage distances and clearances to prevent electrical breakdown

• Output Working Voltage

  • Newly introduced Clause 17 defines methods to determine and verify the output working voltage, essential for user safety and conformity assessment.

• Scope Expansion

  • Extension to DC supply voltages up to 1500 V to address modern lighting system needs, particularly in DC-driven applications.

• Harmonization with IEC 61347-1:2024

  • Updated to align with the fourth edition of IEC 61347-1 for consistent application of general safety requirements
  • Removal of clauses that are now incorporated in IEC 61347-1, reducing redundancy.

Applications

This standard applies to a wide variety of electronic components and circuits used in luminaires, ensuring their safety in both residential and commercial lighting systems. Typical applications include:

• Electronic Controlgear: Controls for LED drivers, dimmers, and electronic ballasts that regulate light output safely and efficiently
• Sensor Integration: Circuits connected to daylight harvesting and occupancy sensors for energy-saving automatic lighting control
• Protective Devices: Components like earth leakage and open-circuit protective circuits commonly used with neon and other specialty lighting transformers
• EMC Performance Circuits: Electronic modules designed to reduce electromagnetic interference and improve compatibility in lighting networks
• Lighting Chains and Decorative Lighting: Circuits managing the intermittent operation of connected lighting elements for safety and longevity

Manufacturers, testing laboratories, and regulatory authorities use IEC 61347-2-11:2024 to verify that electronic circuits in luminaires meet high safety standards during design, production, and certification.

Related Standards

• IEC 61347-1:2024 - Controlgear for electric light sources – Safety – Part 1: General requirements. The foundational document setting broad safety guidelines applicable to all controlgear.
• IEC 62386 Series - Digital addressable lighting interface (DALI) standards governing electronic controlgear communications.
• IEC 63128 and IEC 62756-1 - Standards covering specific types of controlgear circuits related to lighting systems.
• Other parts of the IEC 61347-2 series, each focused on particular controlgear types and light source technologies.

These related documents together form the comprehensive framework ensuring the safe design, implementation, and operation of lighting control electronics worldwide.

By following IEC 61347-2-11:2024, lighting system manufacturers and developers can enhance product safety, compliance, and reliability-crucial factors for both end-user protection and regulatory market access. The standard supports advancements in lighting technology by expanding scope to high-voltage DC applications and integrating modern requirements for marking, testing, and output voltage characterization.