Motor soft starter

A soft starter and transformer technology, applied in the direction of electric solid devices, starter parts, circuits, etc., can solve the problems of poor heat dissipation effect of thyristor, unreasonable structure, unstable operation performance, etc., and achieve anti-electromagnetic interference ability. Strong, safe and stable operation, simple and reasonable structure

Inactive Publication Date: 2012-07-11
SHANGHAI RENLE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of this kind of soft starter in the prior art is unreasonable, the heat

Method used

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Embodiment Construction

[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0022] Such as Figure 1-4 As shown, a motor soft starter includes a main housing 1 , an upper cover 2 , a drive circuit board 3 , a thyristor radiator assembly 4 and a transformer 5 . Wherein, the main housing 1 is a metal or non-metallic part sprayed with an insulating varnish layer on the surface, and the two ends of the main housing 1 are respectively clamped with an incoming line end plate 6 and an outgoing line end plate 7, and the two ends of the main housing 1 Each is provided with a card slot 11 for clamping the incoming line end plate 6 and the outgoing line end plate 7 . Two rows of fixing rods 12 are also arranged on the inner bottom surface of the main housing 1 , and the number of fixing rods 12 in each row inside the main housing...

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Abstract

The invention provides a motor soft starter, and relates to the technical field of starting equipment. The motor soft starter comprises a main casing, an upper cover cap, a driving circuit board, a thyristor heat radiator assembly and a mutual inductor, wherein the thyristor heat radiator assembly is arranged in the main casing, the driving circuit board is arranged above the thyristor heat radiator assembly, the mutual inductor is connected with one end of the thyristor heat radiator assembly, the upper cover cap is fixed on the main casing, and a display screen and a keyboard are arranged on the upper cover cap and are connected with the driving circuit board. The motor soft starter is characterized in that: a wire inlet end board and a wire outlet end board are respectively clamped at both ends of the main casing, two rows of fixed rods are also arranged on the bottom surface inside the main casing, the thyristor heat radiator assembly is arranged in an insulation groove, both ends of the insulation groove are fixed on the fixed rods through an insulation sleeve rod, and a wiring terminal protection cover is also arranged at one side of the upper cover cap. The motor soft starter has the beneficial effects that the structure is simple and reasonable, the assembly is convenient, the operation is safe and stable, and the electromagnetic interference resistance capability is strong.

Description

technical field [0001] The invention relates to the technical field of motor starting equipment, in particular to a motor soft starter. Background technique [0002] Asynchronous motors are widely used in petrochemical, electric power industry, metallurgy, steel, urban construction and many other industries due to their excellent performance and maintenance-free characteristics. However, due to the large inrush current (generally 5-8 times of Ie) generated when starting, and the large starting stress, the service life of the load equipment is reduced. The relevant national departments have clearly stipulated that the motor starting voltage should not exceed 15%. There are two solutions: increase the power distribution capacity, and use starting equipment that limits the starting current of the motor. If the distribution capacitor is only increased for starting the motor, it is obviously not advisable from an economic point of view. For this reason, people often need to be ...

Claims

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Application Information

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IPC IPC(8): H02P1/02H01L23/367
CPCH01L2924/0002
Inventor 陈国成黄清军
Owner SHANGHAI RENLE SCI & TECH
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