How to conduct safety tests on electric water faucets?

As instant home appliances, the safety performance of electric water faucets is directly related to the life safety of users. Standardized safety tests need to pass multiple rigorous tests to build a comprehensive protection system.

Electrical safety testing is the core link. First, the ground resistance test is carried out, requiring the resistance between the ground terminal and the metal shell to be ≤0.1Ω to ensure that the current can be quickly conducted when leakage occurs; the withstand voltage test applies 1500V high voltage for 1 minute, and it is qualified only if there is no breakdown or flashover phenomenon. In the leakage protection device test, when the simulated leakage current reaches 15mA, the protector must automatically cut off the power within 0.1 seconds, and the reaction speed is 20% faster than the national standard.

Waterproof performance testing requires simulating extreme scenarios. The faucet is immersed in 1 meter deep water for 30 minutes, and the insulation resistance must still be ≥2MΩ after removal; in the water spray test, 3bar water pressure is used to spray from all directions for 10 minutes, and the circuit part must not be short-circuited by water to ensure safe use in a humid environment.

Temperature control and overload protection tests are essential. When the set water temperature exceeds 55℃, the temperature limiter should immediately cut off the heating circuit; in the state of continuous dry burning, the overheating protection device must be activated within 10 seconds to avoid fire caused by dry burning. Test data shows that the protection response time error of qualified products must be controlled within ±1 second.

Material safety is also strictly controlled. Metal parts in contact with water must pass the salt spray test to ensure that there is no rust; plastic parts are tested for high temperature resistance and soaked in 100℃ hot water for 24 hours. There is no deformation or cracking, and no harmful substances are precipitated.

Each electric water faucet must pass the above full test and obtain 3C certification before it can enter the market. Standardized safety testing builds a line of defense for instant heating household appliances, allowing convenience and safety to go hand in hand.