Electrical structure for improving rated short circuit current closing ability of load switch

Abstract

The invention discloses an electrical structure for improving the rated short circuit current closing ability of a load switch. The electrical structure comprises a load switch electromagnetic mechanism control circuit. In the circuit, a closing coil is connected in series between the anode and cathode of a power supply and is internally provided with a moving core, a moving bracket and the moving core are arranged with an interval, the moving bracket is orderly connected to a closing rotation shaft, a connection rod and a vacuum arc extinguish chamber contact moving end. A spring sleeves the connection rod between the closing rotation shaft and a moving contact. A capacitor is connected between the anode and cathode of the power supply and is used for storing energy which is used for indirectly increasing the magnetic field of the closing coil in a closing moment. A magnetized moving core is in a magnetic connection with the moving bracket, and the moving bracket, the closing rotation shaft and a vacuum arc extinguish chamber moving contact are driven to be in linkage. According to the electrical structure, through adding corresponding electric components into an electromagnetic mechanism secondary circuit of the load switch, in the moment of energization and the closing of moving and static cores, the closing coil is assisted to generate power to drive the moving contact to move to close.

Description

technical field [0001] The invention belongs to the field of outdoor projection application technology, and specifically relates to an intelligent projection curtain wall, which is suitable for playing videos on building buildings such as commercial buildings, replacing traditional open-air display platforms such as LED screens. Background technique [0002] With the development of society and the improvement of technical level, people put forward higher requirements for power supply reliability and power outage time. In order to continuously improve the reliability of distribution network power supply and strengthen the safety management of distribution network, reliable performance, safe operation and affordable The voltage-time high-voltage AC vacuum load switch with main line ground fault isolation and line automatic power supply recovery is an indispensable equipment for feeder automation; [0003] The voltage-time vacuum load switch is a load switch complete set of equ...

AI Technical Summary

Problems solved by technology

[0004] The existing voltage-time type load switch is designed according to "GB / T 11022 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standard". The highest E3 standard design, also only has the ability to close the rated short-circuit current for 5 times

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