IEC 62442-2:2022

Overview

IEC 62442-2:2022 specifies a standardized method to measure the energy performance and calculate the efficiency of lamp controlgear for discharge lamps (excluding low‑pressure mercury fluorescent lamps). This third edition (2022) replaces the 2018 edition and harmonizes measurement and reporting with other parts of the IEC 62442 series. The standard covers measurement of power losses for electromagnetic controlgear, total input power and standby power for electronic controlgear, and provides calculation rules to determine controlgear efficiency. It applies to devices intended for DC and/or AC supplies up to 1 000 V at 50 Hz or 60 Hz and to controlgear‑lamp circuits made up only of the controlgear and lamp(s).

Key topics and requirements

• Measurement methods
  • Defined set‑ups for measuring power losses of electromagnetic controlgear and total input power of electronic controlgear.
  • Procedures for measuring standby and networked standby power.
• Efficiency calculation
  • Calculation method to derive controlgear efficiency from measured input power and losses.
• Scope and exclusions
  • Excludes low‑pressure mercury fluorescent lamps, controlgear integral to lamps, circuits with series capacitors, and controllable electromagnetic controlgear.
• Test conditions and quality
  • Requirements and guidance on sampling, test sample size, supply characteristics (voltage waveform up to 1 000 V), instrument accuracy, measurement uncertainty and reporting.
• Harmonization
  • Aligned with IEC 62442‑1 and IEC 62442‑3.
  • Incorporates non‑active power measurement methods per IEC 63103:2020.

Practical applications and users

IEC 62442-2:2022 is useful for:

• Manufacturers of electromagnetic and electronic controlgear who need repeatable measurement methods for product development and datasheet claims.
• Test laboratories performing energy performance verification, efficiency testing, and standby power measurements.
• Certification bodies and regulators setting energy performance requirements or compliance tests.
• Lighting specifiers, procurement teams and system designers seeking reliable efficiency and standby power data for energy modelling, life‑cycle cost and compliance with energy regulations.
• Product managers and R&D teams benchmarking controlgear performance and reducing losses.

Practical benefits include consistent, comparable efficiency metrics, improved energy reporting, and better-informed purchasing and design decisions for lighting systems using high‑intensity discharge lamps.

Related standards

• IEC 62442‑1: General definitions and framework (series)
• IEC 62442‑3: Other parts of the energy performance series
• IEC 63103:2020 - Non‑active mode power measurement (used for standby measurements)
• IEC 61347‑1, IEC 61347‑2‑9, IEC 61347‑2‑12 - Lamp controlgear safety and particular requirements
• IEC TS 63105 - Vocabulary

Keywords: IEC 62442-2:2022, energy performance, lamp controlgear, discharge lamps, measurement method, efficiency of controlgear, standby power, electromagnetic controlgear, electronic controlgear, IEC 63103.