Mine integrated high voltage solid soft starting device

Abstract

The invention discloses a mine integrated high voltage solid soft starting device which comprises a support protection structure, an upper device module, a silicon controlled module and a lower electrical component. The upper layer device module comprises a device chamber (10) and a high voltage fuse (2) and a voltage transformer (3) which are arranged on one side of the device chamber (10). The silicon controlled module comprises a silicon controlled valve group (12), an upper beam insulator (4) and an incoming call sensor (6). The lower electrical component comprises a high voltage vacuum contactor (7), a current transformer (8), an incoming cable (9) and an outgoing cable (15). The incoming cable (9) penetrates through the current transformer (8) to be connected with a copper bar (26).According to the starting device, the soft starting device with excellent controllability of voltage and current is provided for the mine passage without gas and dust explosion danger so that the impact of motor start-up on the electric network can be effectively eliminated and accurate control of the motor can be realized.

Description

technical field [0001] The invention belongs to the technical field of motor control equipment, and more specifically relates to a mine-used integrated high-voltage solid-state soft starter. Background technique [0002] In recent years, as the country vigorously promotes energy conservation and emission reduction, a large number of small and medium-sized mining enterprises have eliminated outdated low-voltage motors and replaced them with high-voltage motors. Especially for water pumps and ventilation equipment in some mines, the motors are generally large, which requires the use of high-voltage soft-start equipment. In recent years, the technology has matured and the cost-effective high-voltage solid-state soft-start device has become the only one. s Choice. [0003] High-voltage solid-state soft-start equipment is widely used in petroleum, chemical, building materials, steel, paper and military industries. After years of development, it has become the mainstream configu...

AI Technical Summary

Problems solved by technology

[0004] Traditional high-voltage solid-state soft-start devices have the following disadvantages: (1) During the start-up process of dragging high-voltage AC asynchronous motors, only voltage ramp control, current ramp control, and kick start can be realized. Precise control; (2) It is impossible to achieve low-speed speed regulation movement (such as 8% or 15% of rated speed). For some equipment that needs low-speed adjustment (such as belt conveyors), there is no way to meet customer needs; (3) In the case of no phase adjustment or In the case of changing the wiring, the forward and reverse switching cannot be realized

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