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Winding starting resistor

A starting resistance and winding technology, which is applied in the direction of resistors, spiral coil/spiral disk resistance elements, and resistor components, etc., can solve the problems of low stability, damaged resistors, and resistance strips are easily separated from side slots, etc. High overall stability, firm and reliable installation

Pending Publication Date: 2020-05-22
GUANGDONG FULLDE ELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the resistance strips of the above-mentioned wirewound resistors are easily detached from the side slots, resulting in contact and short circuit between different sections of the resistance strips and damage to the entire resistor, resulting in low stability.

Method used

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Examples

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0028] The winding starting resistor of this embodiment is as Figure 1 to Figure 3 As shown, it includes a hollow casing 1 and a resistance unit 2 housed in the casing 1, the resistance unit 2 includes a support column, a plurality of supporting trays 21 and a plurality of resistance strips 24, combined Figure 5 As shown, the supporting tray 21 is a circular insulating mica thin plate, and a mounting hole 211 is opened in the middle of the supporting tray 21 . Support columns include multiple Figure 6 As shown in the insulating seat 22 made of ceramic material, one side of each insulating seat 22 is provided with a protrusion 221, and the other side of the insulating seat 22 is provided with a groove 222, and the protrusion 221 is inserted through the mounting hole 211 of the supporting tray 21 In the groove 222 of the adjacent insulating se...

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Abstract

The invention discloses a winding starting resistor. The resistor comprises a hollow shell and a resistor unit accommodated in the shell, and the resistor unit comprises a supporting column, a plurality of bearing discs and a plurality of resistor strips. The two ends of the supporting column are fixed to the shell. The supporting discs are insulated, the multiple supporting discs are installed onthe supporting column side by side, each resistor strip is of a spiral structure, the multiple resistor strips are placed on the multiple supporting discs respectively and connected in series, and the shell is filled with insulating slurry so that the resistor units can be separated from the shell, and the resistor strips can be wrapped by the insulating slurry. Compared with the prior art, the winding starting resistor is fixedly packaged through the insulating slurry, and the spiral resistor strip has no deformation space, so that the resistor strip is firmly and reliably mounted, and the overall stability is high.

Description

technical field [0001] The invention relates to the technical field of resistors, in particular to a wire-wound starting resistor. Background technique [0002] When the outdoor high-voltage power switch shunts current to the zero-voltage sub-module capacitor, the power switch needs to be equipped with a start-up resistor to prevent the switching power supply from burning the fuse or tripping due to excessive start-up current impact. High-power resistors are widely used in energy consumption control systems powered by variable frequency motors, industrial motor start-up, speed regulation, and braking control systems, as well as simulated loads of various industrial electrical appliances and neutral point grounding resistance in power distribution systems. . Among the existing high-power resistors, there are mainly wirewound resistors, thick film resistors, and chip resistors. At present, it is difficult for high-power resistors to achieve both small size and sufficient pow...

Claims

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Application Information

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IPC IPC(8): H01C1/028H01C3/16
CPCH01C1/028H01C3/16
Inventor 陈俊郑冬伟王锦全廖汉卿
Owner GUANGDONG FULLDE ELECTRONICS
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