Remote control and manual dual-purpose electrical high-voltage safety switch

Abstract

The invention discloses a remote control and manual dual-purpose electrical high-voltage safety switch which comprises an insulating column, an upper and a lower conductive plates, a switch alloy contact, a magnetic and electrical conductive bar, a piston sheath, a short circuit current coil, an overcurrent coil and a control box but does not comprise a fuse, wherein one end of the upper conductive plate is connected with a wiring threaded rod on the upper end of the insulating column; the other end of the upper conductive plate is fixedly connected with the switch alloy contact; one end of the magnetic and electrical conductive bar comes into contact with the switch alloy contact; the other end of the magnetic and electrical conductive bar is inserted into the piston sheath and is connected with a central tap of the short circuit current coil through the piston sheath; one eduction end of the short circuit current coil is connected to a sheet copper connecting point of a wiring threaded rod on the lower end of the insulating column; one end of an insulating board on the lower end of the insulating column is connected with the wiring threaded rod on the lower end of the insulating column; the other end of the insulating board is connected with one end of the lower conductive plate; the other end of the lower conductive plate is connected with the piston sheath; one eduction end of the short circuit current coil and one end of the overcurrent coil are mutually connected into the central tap for connecting with the piston sheath; and the control end of the control box is respectively connected with the eduction ends of the short circuit current coil and the overcurrent coil.

Description

technical field [0001] The invention relates to a remote control and manual dual-purpose electric high-voltage safety switch, in particular to a remote-control and manual dual-purpose electric high-voltage safety switch without a high-voltage fuse, which is used for short circuits in high-voltage lines and high-voltage equipment such as power transformers Or automatically disconnect the high-voltage power supply in the event of an overload fault to effectively protect high-voltage equipment such as power transformers. Background technique [0002] At present, high-voltage lines and rural power transformers mainly use high-voltage drop switches as control switches, and rely on high-voltage drop fuses installed in the lines for overload and short-circuit fault protection. However, the high-voltage fuse of this high-voltage drop switch is difficult to set both the overload and short-circuit current ratings, and it is very difficult and dangerous to switch on. Electricians often...

AI Technical Summary

Problems solved by technology

Therefore, more than 85% of power transformers in rural areas of the country are damaged every year due to failure to install effective protection switches

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