Also known as "residual current protection plug". When the electrical appliances leakage, in the electrical circuit, there must be a part of the current is not from the firewire through the center line flow back to the transformer, but through the ground or the human body and other "conductive body" into the earth, constituting the main circuit outside of a "tributary", which is what I usually call the "leakage". When this part of the current flows into the earth through the human body, it causes electric shock. "Leakage protection plug" role is when the plug connected to the electrical appliances, if there is a leakage, in the leakage current has not yet reached the human body to harm the flow of electricity before the power supply is automatically cut off to protect personal safety.
Leakage protection plug
Leakage protection plug working principle
Leakage protector will be installed in the line, the primary coil is connected to the grid line, the secondary coil is connected to the leakage protector in the off-trigger.
When the normal operation of the power equipment, the line current is balanced, the sum of current vectors in the transformer is zero (the current is a vector with a direction, such as by the direction of outflow "+", return direction "-"), in the transformer in the direction of "+", "-", "-", "-", "-", "-", "-", "-", "-" and "-", "-". ", in the transformer back and forth in the current size is equal, the direction of the opposite, positive and negative offset each other). Since there is no residual current in the primary coil, it will not sense the secondary coil, and the switching device of the leakage protector operates in a closed state.
When the equipment shell leakage and someone touched, it is generated at the point of failure shunt, the leakage current through the human body - earth - grounding, return to the transformer neutral point (and not the current transformer), resulting in the transformer Shen inflow and outflow of current imbalance (current vector sum is not zero), the primary coil Shen Residual current is generated in the primary coil. As a result, it will sense the secondary coil, when this current value reaches the leakage protector limited action current value, the automatic switch off, cut off the power supply.
Leakage protection plug
Application Scope Editor
Leakage protection plug is widely used in electric ambient table, water storage water heater, electric hair dryer, electric clip, electric clippers, vacuum cleaner, electric bathtub, electric water heater, electric rice cooker, television, refrigerator, microwave ovens, washing machines, dishwashers, sterilizers, drinking water fountains, computers, power tools and medical equipment, instruments and meters. Leakage protection for terminal electrical appliances.
Features
Leakage protection plug is compact, convenient, wide voltage (100-240V), can be applied to different countries and different places of use (voltage, leakage action current is different), according to customer needs to use the corresponding plug, wire, etc., the material is excellent (more durable) and so on.
Leakage protection plug
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Leakage protection plug, I hope it will help you, if you want to know more about the leakage protection plug related information, please stay tuned.