Double-line fast switch magnetic starter

Abstract

The invention discloses a magnetic starter, and particularly relates to a double-line fast switch magnetic starter capable of recovering running fast when a line of controller breaks down. The double-line fast switch magnetic starter comprises a main loop and a control loop, the main loop comprises three-phase supply X1, X2 and X3, a separating change-over switch HGK, normally open contacts CKJ11 and CKJ21 of a vacuum contactor, a resistance-capacitance absorption device RC, electric motor comprehensive protectors JDB1 and JDB2 and wiring cavities of the starter D1, D1 and D3. The control loop comprises a control transformer KB, relays ZJ1 and ZJ2, a fuse protector RD1, fuse protectors RD2 and RD3, vacuum contactors CKJ1 and CKJ2, a stop button TA, electric motor comprehensive protectors JDB1 and JDB2 and a selector switch. When one line breaks down, the double-line fast switch magnetic starter can fast shift to a second loop by turning the micro change-over switch on the outer shell of the starter, the starter is enabled to work continuously, fault handling time is greatly shortened, the influence to the coal production is reduced, and production efficiency and production effect are improved.

Description

technical field [0001] The invention relates to a magnetic starter, in particular to a two-way fast switching magnetic starter. Background technique [0002] For coal mining enterprises, safe production is very important, but coal production is the goal pursued by enterprises. However, electrical faults are an important factor affecting coal production, and magnetic starter faults account for a large proportion of electrical faults. At present, the magnetic starters used in coal mines all work in a single circuit. If a component fails, the starter cannot operate normally. When a fault occurs, due to the limited underground conditions and various factors, the fault processing is slow, and it takes dozens of minutes at least. The person needs several hours, has had a strong impact on the raw coal production of coal mine. Especially for some important facilities and equipment, such as water pumps, fans, conveyors, etc., once a failure occurs, if they cannot be restored in ti...

AI Technical Summary

Problems solved by technology

At present, the magnetic starters used in coal mines all work in a single circuit. If a component fails, the starter cannot operate normally. When a fault occurs, due to the limited underground conditions and various factors, the fault processing is slow, and it takes dozens of minutes at least. It takes several hours, which seriously affects the raw coal production of coal mines

Especially some important facilities and equipment, such as water pumps, fans, conveyors, etc., if they fail to resume operation in time and quickly after a failure, it will lead to serious safety production consequences

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