IEC 60335-2-40: 2022 Household and similar electrical appliances – Safety – Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers

The IEC 60335-2-40:2022 standard specifies the safety requirements for electrical heat pumps, air-conditioners, and dehumidifiers used in household and similar applications. This part of the IEC 60335 series is focused on ensuring safe operation of such appliances to protect users from hazards related to electrical, mechanical, thermal, fire, and radiation risks. Key highlights of this standard include:

Scope and Application: The standard applies to electrically-powered heat pumps, air conditioners, and dehumidifiers designed for household use, as well as similar equipment used in commercial or light-industrial applications with similar characteristics.

Construction and Safety Requirements: It mandates specific construction guidelines to ensure safe design, including protection against electrical shock, mechanical stability, and resistance to fire. It also includes detailed requirements for wiring, insulation, and protection against accidental contact with moving parts.

Testing and Performance: It outlines testing methods for evaluating the appliance’s electrical safety, cooling and heating capacities, and energy efficiency. Specific tests address durability under continuous use, resistance to heat, and behavior under abnormal operation conditions.

Environmental Considerations: The standard has been updated to address environmental aspects, including the safe use of refrigerants. This includes specific provisions for handling flammable refrigerants to minimize risks of leaks, explosions, and chemical hazards.

Control Systems and Software Safety: Requirements for control systems, especially those controlled by software, are included to prevent failures that could lead to unsafe operation. This part also includes conditions for safe restarting after power interruptions.

Maintenance and User Safety: It sets forth guidelines for safe maintenance practices, marking, and user instructions, helping prevent misuse or unsafe operation due to lack of understanding.

Compliance and Certification: The standard provides a framework for testing and certifying these appliances for compliance with IEC safety requirements, ensuring that manufacturers adhere to consistent safety benchmarks.

This standard thus offers comprehensive safety criteria for heat pumps, air conditioners, and dehumidifiers, aiming to reduce risks to users and enhance overall product reliability and safety in household and similar settings.

LISUN supplies the fully test solutions for the following IEC 60335-2-40: 2022, please see the below excel table:

IEC 60335-2-40: 2022 Clause and Subject	LISUN Model
5.6 High and low temperature & humidity chamber	GDJS-015B
6.2/15.2 IP waterproof test	JL-12,JL-34, JL-56, JL-7
10. Power input and current	LS2050B
11. Heating	GW-225
13. Leakage current test	WB2675D
21.2/ Annex GG.7.3 Vibration test	LVD-100KG
22.46 Normal operation	CZKS-6+DFX-20
30. Resistance to heat and fire	ZRS-3H
31. Resistance to rusting	YWX/Q-010
32.101 UV-C irradiance test	LPCE-2(LMS-9000CUV)
Annex GG.7.2.2 Random vibration test	LVD-AT01
Annex GG.7.2.3 Drop test with the packaging	DT-60KG
Annex KK Test method for hot surface ignition temperature	RSY-LT
Annex OO UV radiation conditioning	UV-263LS