IEC60335-2-24
IEC 60335-2-24 is a standard on the safety of household and similar electrical appliances issued by the International Electrotechnical Commission (IEC). It is a sub-standard of IEC 60335-1 (General safety standard for household electrical appliances) and specifically targets equipment such as refrigerating appliances, ice cream machines, and ice makers.
Main Contents
Electrical Safety: It stipulates the electrical insulation performance, electrical clearance, creepage distance, etc. of the equipment to prevent the risk of electric shock to users.
Mechanical Safety: It involves aspects such as the structural stability of the equipment and the strength of protective devices.
Thermal Safety: It standardizes the temperature control and heat transfer of the equipment under normal operation and abnormal conditions.
Material Safety: It specifies the performance and safety of the materials used in the equipment, including the materials of the housing, insulating materials, materials in contact with refrigerants, etc. The materials are required to have good corrosion resistance, aging resistance, and flame retardancy.
Environmental Requirements: It makes strict regulations on the refrigerants used in refrigeration equipment, including the usage amount of refrigerants and the requirements for leakage testing, to ensure that the impact of the equipment on the environment is minimized. At the same time, the equipment is required to comply with relevant environmental protection directives.
Energy Efficiency Requirements: It stipulates that refrigeration equipment should meet relevant energy efficiency standards, such as the EU ErP (Energy-related Products) directive, to reduce energy consumption and improve the efficiency of the equipment. This not only helps to save energy but also reduces the usage costs for users.
Identification and Instructions: The equipment is required to have clear and permanent identification, including information such as the rated voltage, rated power, refrigerant type, safety warning signs, etc. of the product to enable users to use and maintain the equipment correctly.
UL 60335-2-24
UL 60335-2-24 is formulated by Underwriters Laboratories (UL) in the United States and is mainly applicable to the North American region. Although it also has some influence in other regions, it has the highest recognition in the North American market. UL 60335-2-24 partially adopts some contents of IEC 60335-2-24, but at the same time, it retains some national differences and special requirements in the United States.
The following are the testing equipment involved in these two standards.
| EN / IEC60335-2-24:2020 Clauses and figures | Corresponding testing equipment from Pego |
| Clause 11 heating | |
| 11.2 replacement | test corner multiplex temperature meter |
| Clause 15 moisture resistance | |
| 15.2 addition | Spillage test apparatus (subclause 15.101.1 & figure 101) |
| Clause 16 leakage current and electric strength | Withstand voltage tester |
| Clause 21 mechanical strength | |
| 21.1 modification | 1J spring hammer for testing accessible glass panels Hardwood surface for drop impact test (subclause 21.101) Vibration tester (subclause 21.101) φ75mm test sphere (subclause 21.102) |
| 22 construction | Scratch tool (Subclause 22.107.2 & figure 102) Test punch (subclause 22.116 a), b)) 5J pendulum hammer (subclause 22.116 c)) |
| Clasue 23 internal wiring | |
| 23.3 modification | power cord flexing test apparatus |
| UL60335-2-24:2020 Clauses and figures | Corresponding testing equipment from Pego |
| Clause 11 Heating | |
| 11.2 replacement | test corner Multiplex temperature tester |
| Clause 20 Stability and mechanical hazards | |
| 20.1 modification | Articulated Probes (Annex 101) |
| 21 Mechanical strength | Hardwood surface for drop impact test (subclause 21.101) Vibration tester (subclause 21.101) φ75mm test sphere (subclause 21.102) |
| Clause 22 Construction | Scratch Test Pin (subclause 22.107.2 & figure 102) Test punch for testing glass (subclause 22.116) 5J pendulum hammer for testing accessible glass panels (subclause 22.116) Test probe B with 20N thruster (subclause 22.118 DV1.2) |
| Clause 31 Resistance to rusting | Scratch tester with hardened steel pin (subclause 31.101 DV.1 ) Salt spray test chamber subclause 31.101 DV.1 ) |
| Figures | |
| Figure 102 – Detail of scratching tool tip | scratching tool tip |
| Figure 101. DVA.1 – Articulate probe with flat and cone shaped hand 3.5-4.5 year age | Articulated Probes |
| Figure 101. DVA.2 – Articulate probe with flat and cone shaped hand 10.5-11.5 year age | Articulated Probes |
