Magnetism-regulating type ultra-small current relay

Abstract

The invention discloses a magnet regulating type relay with ultra-small current, which is mainly used for the leakage protection of a terminal electrical equipment and comprises a magnet coil, an iron core with high magnetic conductivity, a constant magnet with a center hole and a dry reed relay, wherein the constant magnet is arranged above the magnet coil, an iron core is inserted into the constant magnet and the magnet coil, a coil in the dry reed relay is connected with the direct circuit main after being connected with an adjustable potentiometer in series, one end of a magnet coil winding is connected to neutral, the other end is connected with an earth lead of the terminal electrical equipment which needs the leakage protection. The relay of the invention is characterized in that the action value of the current is not more than 1mA and the action time is not more than 0.05s, compared with the industrial requirements, the action current value is much lower and the action time is much shorter, and the relay can play a good leakage protecting effect. The relay stops the personnel electrical shocks and fire hazard accidents which are caused by the electricity leakage.

Description

Technical field: [0001] The patent of the present invention relates to an ultra-small current relay, which is mainly used for lol leakage protection of terminal electrical equipment. Background technique: [0002] When electrical equipment leaks electricity, the leakage protector should be able to quickly disconnect the fault circuit to avoid accidents such as personal electric shock casualties or fires caused by leakage. At present, domestic products have a relatively high protection action value and a long protection action time limit for the grounding protection of operating circuits and electrical equipment. For example, industry requirements: [0003] 1. The leakage protector is mainly used for indirect contact protection, that is, the protection of the equipment shell with dangerous voltage due to the damage of the insulation of the electrical equipment. When the rated operating current of the leakage protector is not greater than 20mA and the operating time is not gr...

AI Technical Summary

Problems solved by technology

At present, domestic products have a relatively high protection action value and a long protection action time limit for the grounding protection of operating circuits and electrical equipment. For example, industry requirements:

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