Maintainable short-circuit protection device for electrical system

Abstract

The invention provides a maintainable short-circuit protection device for an electrical system. The device comprises a sealed insulating shell, a switch box cover, a fixed ceramic tube, a fixed conductive column, an inclined conductive block, a shaking separation frame structure, an elastic drive frame structure, a bending magnetic isolation frame structure, a communication through hole, a sealing insulation base, a mounting groove, an automatic compensation connection frame structure, a bolt storage hole, a voltage and current detection circuit board, a display screen and an alarm, wherein the switch box cover is in screw connection with the right side of the sealed insulating shell; and the fixed ceramic tube is glued to the upper part of the inner side of the sealed insulating shell. The device of the invention has the beneficial effects that through the arrangement of a metal conductive column, an inclined touch cushion block, the inclined conductive block and the fixed conductive column, the contact area of the contact position can be increased through the inclined surfaces of the inclined touch cushion block and the inclined conductive block, and the inclined conductive block which is arranged in an inclined manner can play a role in limiting.

Description

technical field [0001] The invention belongs to the technical field of electrical short-circuit protection, and in particular relates to a short-circuit protection device for a maintainable electrical system. Background technique [0002] For the protection of short-circuit faults caused by electrical short-circuiting of conductors with unequal potentials in the power supply system, the simplest way to implement short-circuit protection is to install fuses, followed by the use of current and voltage with sudden increase in current and sudden drop in voltage Relay protection, specifically, can be divided into overcurrent protection with time limit (definite time limit or inverse time limit), overcurrent protection with no time limit or time limit, three-stage overcurrent protection current and voltage interlocking time limit overcurrent or quick break protection Wait. [0003] However, the existing short-circuit protection device of the electrical system also has the problem...

AI Technical Summary

Problems solved by technology

[0003] However, the existing short-circuit protection device of the electrical system still has the problems that the contacts are easily glued together when the current is too large, the disconnection protection effect is poor, and the magnetic field is easily formed on the outside of the wire to affect the normal operation of other electrical components.

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