Household electrical appliance safety testing services

Safety requirements of household appliances is more important than other products due to they use power mostly directly connected to the mains, high power rate, and high temperature heating function, motor rotation, and old and weak people as users probably use frequently. For electric heating products, both of temperature and fireproofing are very important. But for motor products,  insulation and mechanical damage require special consideration.

The Safety Test for Bread Toaster (e.g.)
Emperature-rise test: appliance works for 15 minutes under standard required working conditions by measure the temperature-rise state of outside rotary knob, enclosure, power cable, internal wire ect. The temperature should not exceed the standard limit value;
 
Fire test: it is a simulated test of non-normal circumstances. Place the bread slices in a toaster, stop the mechanical pop-up work, and let bread slices burn till the flame goes out. After the test, protection against insulation and endurance voltage test should meet standard requirements.

The main Safety Test for coffee pot (e.g.)
Water overflowing test: it is a simulation test of overflow situation after container full of water and then endurance test is carried out. For example, input the voltage between the live part and metal surface that is easy to touch(reinforced insulation), according to EN60335-1: under3000V, 1 minute.
Abnormal test: short circuit temperature controller, based on rated power, with increased power according to standard limit rate, keeps the heating tube heating to check the temperature safety device whether is functional or not . In the case of protection device out of work, if temperature rise  under standard limit requirements, it is pass. After completion of testing, pressure testing is carried out.

The Safety Test for portable fans (e.g.)
Motor blocking test: block the motor, keep the motor continue heating under declare voltage and then check the temperature protection device whether is functional or not. In case of protection device out of work, if temperature rise of locked motor under standard limit requirements, it is pass.
 
Rotation test: For the fan be with rotation function, need to arrange 100,000 times rotation endurance test.

The Thermal Test for Oven Surface (e.g.)
The thermal test for the surface of oven: in a normal working condition, with rated power, working up to the stable state, then measure the surface temperature of the oven. The requirement of temperature is shown in standard EN60335-2-9 Table Z101.

The exception for surface thermal test, please refer to standard EN60335-2-9 Figure Z103.
Base on general safety standards IEC 60335-1 requirement, the household appliances should follow specific safety standards ,details shown in the table below:

EMF-electromagnetic radiation on the human body: this requirement is used to assess household appliance in normal use, producing radiation intensity of magnetic field to the users, to ensure that the magnetic field radiation of the product is under certain reference levels for the protection of human security. This test is based on the standard EN62233.