Plug-in front switch device

Abstract

The present invention provides a plug-in meter front switch device. The plug-in meter front switch device comprises a breaker and an insulating pedestal; the breaker includes three phase input terminals and three phase outlet terminals; the pedestal is provided with six sockets; the three phase input terminals and the three phase outlet terminals are respectively plugged on the six sockets to install and fix the breaker; and three phase incoming lines and three phase outgoing lines are respectively connected with the six sockets and are connected with the three phase input terminals and the three phase outlet terminals of the breaker in a one-to-one correspondence relationship through the six sockets. The maintenance and the replacement of the plug-in meter front switch device are very easy, flexible and reliable, with no need for turning off a superior power supply; and moreover, the plug-in meter front switch device is safer and more reliable through adoption of a breaker for controlling switching of a current, and once the installation of the plug-in meter front switch device is completed, three phase incoming lines and three phase outgoing lines are free of demolition so that aging and corrosion of junctions are avoided, therefore potential risks are greatly reduced and work safety is improved.

Description

technical field [0001] The invention relates to a circuit switch, in particular to a plug-in front meter switch device. Background technique [0002] The front switch of the low-voltage meter is one of the important switchgears in the power system. The electric personnel can easily disconnect the power supply without live operation through the front switch of the low-voltage meter when overhauling the ammeter. Because of the importance of the front switch of the low-voltage meter, the safety and reliability of the front switch of the low-voltage meter have been widely concerned by people. [0003] At present, the power system generally uses the switch blade as the front switch of the low-voltage meter. During installation, the three-phase incoming and outgoing lines are connected to the incoming and outgoing wire terminals of the switch blade through bolts. However, the safety of the switch knife itself is low, and when the switch knife is overhauled or replaced, for safety...

AI Technical Summary

Problems solved by technology

However, the safety of the switch knife itself is low, and when the switch knife is overhauled or replaced, for safety reasons, it is necessary to stop the power supply of the upper level, and then the bolt can be loosened to disassemble the switch knife. Finally, connect the three-phase incoming and outgoing wires to the incoming and outgoing wire terminals of the switch knife through bolts

In addition, due to repeated disassembly, operation time, environment and other factors, the connecting parts between the bolts and the three-phase incoming and outgoing lines and the knife terminals are prone to aging and serious corrosion, making it difficult to quickly loosen the bolts and separate the three-phase incoming and outgoing lines from the Knife terminal, which increases the difficulty of maintenance, further prolongs the power outage time, and increases the safety hazard

Images