IEC 62442-3:2022

Overview

IEC 62442-3:2022 - Energy performance of lamp controlgear - Part 3 - specifies the measurement and calculation methods used to determine the efficiency and standby (no‑load) power of lamp controlgear for tungsten‑halogen lamps and LED light sources (including LED modules and LED lamps). This third edition is a technical revision harmonized with IEC 62442‑1 and IEC 62442‑2 and adds reference to non‑active power measurement methods per IEC 63103. The standard applies to controlgear intended for DC and AC supplies up to 1 000 V (50 Hz or 60 Hz).

Key topics and technical requirements

• Scope of measurement: Defines methods for total input power, power losses of electromagnetic transformers, and power losses and standby power of electronic convertors and electronic LED controlgear.
• Measurement set‑ups: Specified input/output power and no‑load measurement configurations for both electromagnetic (transformer) and electronic (convertor) controlgear.
• Efficiency calculation: Procedures to calculate controlgear efficiency from measured input and output power values.
• Standby and networked standby: Methods for measuring standby power of convertor/electronic controlgear, including networked standby conditions.
• Instrumentation and uncertainty: Requirements for instrument accuracy, thermocouple/temperature indication, measurement uncertainty and reporting of power measurements.
• Test conditions and sampling: Guidance on supply voltage waveform, substitution loads, sampling of controlgear for testing and test sample size.
• Applicability and exclusions: Applies to standalone controlgear‑lamp circuits; does not apply to controlgear integral to lamps, circuits with series capacitors, or controllable electromagnetic controlgear.

Practical applications - who uses this standard

• Manufacturers and designers - to validate and optimise controlgear efficiency and reduce standby losses during product development.
• Test laboratories and conformity bodies - to perform standardized efficiency and standby power measurements for compliance, certification and data reporting.
• Specifiers and procurement teams - to compare product energy performance for tenders, energy labeling and sustainable procurement.
• Lighting system integrators and energy auditors - to assess in‑field energy losses and improve system efficiency.
• Regulators and standards authors - to reference consistent measurement procedures in regulations and energy performance frameworks.

Related standards

• IEC 62442‑1, IEC 62442‑2 (other parts of the series)
• IEC 63103:2020 (non‑active mode power measurement)
• IEC 61347 series (lamp controlgear safety and particular requirements)
• IEC 61558 (safety of transformers and power units)
• IEC 62301 (measurement of standby power)
• IEC TS 63105 (lighting vocabulary)
• IEC Guide 115 (measurement uncertainty for conformity assessment)

Keywords: IEC 62442-3:2022, lamp controlgear efficiency, standby power, tungsten-halogen, LED light sources, measurement methods, electronic convertor, electromagnetic transformer, IEC 63103.