Household Appliance Testing Projects and Standards

Introduction to CE certification Testing for Small Appliances

CE Certification Testing Items:

- Certification content includes:

  • Review of technical documentation

  • Evaluation of circuit diagrams

  • Determination of applicable certification scheme

- Testing content varies by product and relevant directives. Main test categories:

  • Electromagnetic Compatibility (EMC):

    - Disturbance power

    - Radiated disturbance

    - Terminal disturbance voltage

    - Electrostatic discharge (ESD) immunity

    - Radiated immunity

    - Conducted immunity, etc.

  • Low Voltage Directive (LVD):

    - Harmonic current

    - Voltage fluctuation and flicker

    - Current strength

    - Instantaneous voltage, etc.

Relevant EN Testing Standards:

- EN 60335: Safety of household and similar appliances

- EN 55014-1: EMC – Requirements for household appliances – Part 1: Emission

- EN 55014-2: EMC – Requirements – Part 2: Immunity

- EN 61000-3-2: Harmonic current emissions limits (≤16A/phase)

- EN 61000-3-3: Voltage fluctuation and flicker limits (≤16A)

- EN 62233:2008: Measurement and evaluation of EMF from household appliances

Common Testing Standards for Household Appliances

To ensure user safety and prevent hazards such as electric shock, fire, radiation, or mechanical injury, household appliances are subject to rigorous testing.

Safety Standards:

- General safety standard: GB 4706.1

- Product-specific safety standards: GB 4706.X series

EMC Standards:

- GB 4343.1-2009: EMC – Emission requirements

- GB 17625.1-2012: EMC – Harmonic current emission limits

Examples of Product-Specific Testing Standards

- GB 4706.2: Steam irons (including cordless, pressurized, and rapid types)

- GB 4706.7: Vacuum and water cleaning machines

- GB 4706.8: Electric blankets and heating pads

- GB 4706.9: Electric shavers and clippers

- GB 4706.10: Massagers (foot, handheld, chairs, etc.)

- GB 4706.14: Toasters, grills, ovens

- GB 4706.15: Hair and skincare appliances (hair dryers, curlers, etc.)

- GB 4706.19: Liquid heaters (coffee makers, kettles, yogurt makers)

- GB 4706.21: Microwave ovens

- GB 4706.22: Freestanding cookers and grills

- GB 4706.23: Indoor electric heaters

- GB 4706.27: Fans (desktop, ceiling, ventilation fans)

- GB 4706.28: Range hoods

- GB 4706.29: Induction cookers

- GB 4706.30: Kitchen machines (blenders, juicers, food processors)

- GB 4706.45: Air purifiers

- GB 4706.48: Humidifiers

- GB 4706.56: Deep fryers and frying pans

- GB 4706.57: Floor and carpet cleaning machines

- GB 4706.5: Oral hygiene devices (electric toothbrushes, oral irrigators)

- GB 4706.66: Pumps (aquarium, shower, sewage)

- GB 4706.74: Electric sewing machines

- GB 4706.84: Garment steamers

Major Appliances:

- GB 4706.11: Instant water heaters

- GB 4706.12: Storage-type water heaters

- GB 4706.13: Refrigerators, ice cream makers, ice makers

- GB 4706.17: Motor-compressors

- GB 4706.20: Tumble dryers

- GB 4706.24: Washing machines

- GB 4706.25: Dishwashers

- GB 4706.26: Spin dryers

- GB 4706.32: Heat pumps, air conditioners, dehumidifiers

Testing Procedures and Content

Pre-Test Inspection:

- Check product labeling, markings, and user manuals

- Inspect external appearance and internal construction

- Verify certification of internal components

Safety Testing:

- Input power or current measurement

- Temperature rise during normal operation

- Leakage current and dielectric strength testing

- Abnormal operation testing

- Heat resistance and flammability testing for non-metallic parts

EMC Testing:

a) EMI (Electromagnetic Interference):

   - Radiated Emission (RE)

   - Conducted Emission (CE)

   - Harmonics and Flicker tests

b) EMS (Electromagnetic Susceptibility):

   - ESD (Electrostatic Discharge)

   - EFT (Electrical Fast Transient)

   - DIP (Voltage dips)

   - CS (Conducted Susceptibility)

   - RS (Radiated Susceptibility)

   - Surge (Lightning surge)

   - PMS (Power-frequency magnetic field immunity)