From what I understand, at present, only Japan uses class 0I appliances. Usually, the supply cord have an earthing wire, but the earthing is not done by the earthing pin in the plug. Instead, tools are used to connect a separate terminal or earthing ring to achieve effective earthing. Correspondingly, there is also a earthing terminal on the appliance. Before installation, this terminal is not connected to any external wires and is usually connected during use and installation.
motor-operated appliance: appliance incorporating motors but without any heating elementNote 1 to entry: Magnetically driven appliances are considered to be motor-operated appliances. Household electrical appliances usually use heating elements or motors to complete their designed functions. The main functions are heating, such as heating food or air, and rotation or mechanical movement of products, such…
stationary appliance: fixed appliance or an appliance which is not a portable appliance. Stationary appliance includes fixed appliance and not a portable appliance. The characteristic of a stationary appliance is that once it is put into use, it will be placed in a fixed position. At the same time, the position of the appliances will…
The standard emphasizes “abnormal operation” here. Only devices that operate under “abnormal operation” conditions can be defined as protective devices. Therefore, there are many types of protective devices, including overheating protection devices, overcurrent protection devices, and overpressure protection devices. Overheating protection devices include the thermal link, non- self-resetting thermal cut-out, self-resetting thermal cut-out, thermal cut-out,…
thermal link: thermal cut-out which operates only once and requires partial or complete replacement It is a temperature sensing device, but it can only be operated once, when the temperature is higher than its set value, it will disconnect, and after disconnection, the current can not pass through, so as to play the role of…
