An intelligent control and protection device

Abstract

The invention is to solve the technical problem, and for the defects, provides an intelligent control and protection device which comprises an engine base, an arc-extinguishing cover, a moving contact supporting mechanism, static contact connection boards, static contact support frames, a moving contact connection board and a fixation member. The engine base is internally provided with a circular moving contact supporting mechanism clamping base; the moving contact supporting mechanism is clamped to and fixed in the moving contact supporting mechanism clamping base; the engine base is provided with a through hole; the static contact connection boards are fixedly arranged at the two sides of the through hole of the engine base through bolts respectively; the static contact support frames are arranged above the static contact connection boards through bolts respectively; a supporting rod of the moving contact supporting mechanism passes through the through hole; the moving contact connection board is fixedly arranged on the moving contact supporting mechanism through the fixation member; and the arc-extinguishing cover covers above the engine base. The device is fast in arc-extinguishing speed, more safe and reliable, simple in structure, and convenient to install, greatly improves assembly efficiency and saves manpower and cost.

Description

technical field [0001] The invention relates to an intelligent control and protection device, belonging to the technical field of power transmission and distribution. Background technique [0002] Intelligent control and protection device refers to the current under normal circuit conditions that can be intelligently controlled to close, carry and break, and can close, carry and break current under abnormal circuit conditions (including short-circuit conditions) within a specified time switchgear. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded or short-circuited, under-voltage, leakage, etc., and its function is equivalent to a plastic shell switch. Combination with AC contactor, electric shock protector, motor protector, etc. [0003] The traditional control and protection device includes the static contact connecting plate, the mo...

AI Technical Summary

Problems solved by technology

[0003] The traditional control and protection device includes the static contact connecting plate, the moving contact connecting plate and the arc extinguishing cover. The arc extinguishing grid is arranged in the arc extinguishing cover. When the moving contact and the static contact contact each other, an arc will be generated. However, due to The structure of the moving contact connecting plate is limited, and the adsorption between it and the arc extinguishing grid is not very good. The arc will directly penetrate the shell of the arc extinguishing cover through the moving contact connecting plate, which will damage the arc extinguishing cover and cause a fire. It poses a threat to the safety of equipment and personnel. At the same time, the moving contact connecting plate needs to be fixed on the moving contact supporting mechanism. The moving contact supporting mechanism includes a moving contact supporting seat, a permanent magnet operating mechanism and a spring structure. The moving contact supporting The seat and the permanent magnet operating mechanism are usually fixed by bolts or welding. The operation is cumbersome, the installation is inconvenient, the flexibility is poor, and the manpower and material resources are greatly wasted. The spring structure generally includes four springs, which is complicated to assemble and the force is not strong. Uniform, poor stability

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