Relay protection loop short-circuiting device

Abstract

The invention discloses a relay protection loop short-circuiting device. The relay protection loop short-circuiting device comprises a box body; a test line is lead out from two ends of the box body respectively; the test lines are connected in series with a starting switch, a circuit on-off indicating lamp and a fuse which are installed on the box body; the surface of the box body is provided with a knob switch used for selecting current tap positions; a side surface of the box body is provided with a time button for controlling the on time of a circuit; a single-chip microcomputer minimum system and peripheral circuits are encapsulated in the box body; the single-chip microcomputer minimum system includes a single-chip microcomputer, a starting circuit, a power source circuit, a crystal oscillation circuit and a reset circuit; and the peripheral circuits include a relay circuit and a button circuit. With the relay protection loop short-circuiting device of the invention adopted, harm to the body of a user and to equipment due to wrong short circuiting in a short-circuiting test process can be avoided; and fuse specifications and turn-on time can be set according to different circuits, and therefore, accuracy and safety in a short-circuiting test can be improved.

Description

technical field [0001] The invention relates to the technical field of electric power system relay protection, in particular to a relay protection circuit short connector. Background technique [0002] In the daily relay protection work, the protection device is often debugged, the switch is tested for transmission, and the remote sensing value is tested. In these work items, the common method is to conduct a short-term short-circuit test on the relevant terminals. The common method of short-circuiting is to cut a section of wire, and then use the wire to directly short-circuit the terminal, which has the following problems: First, there is no corresponding connection prompt during the short-circuiting process, and the operator cannot determine whether the short-circuiting is successful after the operation; There is no safety device in the connection circuit, the equipment and personal protection will be lost, and even equipment damage and personal electric shock may be cau...

AI Technical Summary

Problems solved by technology

The common method of short-circuiting is to cut a section of wire, and then use the wire to directly short-circuit the terminal, which has the following problems: First, there is no corresponding connection prompt during the short-circuiting process, and the operator cannot determine whether the short-circuiting is successful after the operation; There is no safety device in the connection circuit, equipment and personal protection will be lost, and equipment damage and personal electric shock may even be damaged due to wrong short circuit

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