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It is understood that the polarity detection function is an automatic detection of ground, neutral and FireWire. The polarity detection indicator remains off when the appliance is working properly. When the ground wire is missing, the zero fire wire is inverted and other power safety hazards occur, the indicator light on the socket will light up. At this time, the user of the electrical appliance needs to detect whether the power supply front-end configuration line, power supply zero, whether the fire wire is upside down, and whether the ground wire is not connected, and perform timely processing to avoid property loss or personal injury, so as to give the user true security protection. .
It is worth noting that some products known as "lightning protection" on the market currently have the concept of "lightning protection", and the concepts are replaced. Only a primary capacitor-like component indirectly connected to the zero fire line is called a "lightning protection" socket. This will not only fail to protect it, and it may also burst when it encounters strong lightning. It is a serious consumer fraud. Experts remind consumers that when they purchase surge power outlets, they must be sure to see whether there are professional inspections and clear parameter markings. Pay attention to choosing reputable brands.
How to detect the safety of household appliances through the socket? At present, the lightning protection and explosion-proof socket products on the market have been upgraded again, integrating lightning protection, surge protection and polarity detection into the design of the socket.