Electronic load limiting automatic controller, also known as automatic current limiting controller or automatic current limiting controller, is a fully automatic current limiting controller, specifically designed to limit the illegal use of resistive load power heating equipment (such as electric furnace, hot fast), etc., to prevent fire and safety hazards caused by overcurrent heating. This controller is suitable for AC 50Hz, working voltage 220V, current range
0.5-20A, power 110W-4.4kW. They can be widely used in the automatic control of electricity consumption in hotels, student dormitories, factory dormitories and civil rooms on construction sites, as well as specified power use places.
The main functions of electronic load limiting automatic controller include:
Overload protection: when the actual load current exceeds the rated current and the time is within 10-50 seconds, the power limiting controller will automatically disconnect the load power supply and light the overload protection indicator red light.
Overload processing: need to immediately unplug the overload load power supply (illegal use of electrical appliances), when the rated current of the automatic controller is reached, within 10-50 seconds, if the load power is lower than the nominal load power, the time green indicator light will be automatically lit, can automatically restore normal operation and power supply use. Otherwise, the controller will automatically continuous tripping can not be used normally.
Safety measures: Because the controller has no short circuit and leakage protection function, the input end must be connected to the product with short circuit and leakage protection function. In addition, because the controller has the automatic recovery function, when the controller plays the protection and action, should immediately remove the load (with electrical appliances) and check the circuit, otherwise the controller will automatically and continuously trip, and eventually may burn out the controller or power line due to frequent overload on and off for a long time, causing not normal use.
In addition, the design of the electronic load limiting automatic controller also takes into account energy saving and safety factors. For example, a dormitory illegally uses 700-1000W electric heating equipment for 2-3 hours a day, which can save 500 yuan in electricity bills a year at 0.5 yuan/degree. At the same time, by eliminating the use of high-power illegal electrical appliances caused by excessive current heat caused by fire, has played a role in eliminating safety hazards
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