Starting resistor

A technology of starting resistors and resistor cores, applied to resistors, non-adjustable metal resistors, circuits, etc., can solve the problems of long starting time, large power loss, and high cost of starters, and achieve increased magnetic resistance and increased power loss. Great effect with little power loss

Inactive Publication Date: 2005-03-02
陈柳武
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a starting resistor, which is not only small in size, but also can solve the problems of long starting time and large power loss of the starter used to start the three-phase squirrel-cage asynchronous motor, high cost, and fear of being damp.

Method used

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Embodiment Construction

[0013] The structure of the present invention is described in further detail below in conjunction with the accompanying drawings:

[0014] Figure 1 and figure 2 As shown, the starting resistor includes a resistance core 1, an insulating layer 2, and an electrode 3 connected to the resistance core 1 and leading out of the insulating layer 2. The resistance core 1 is made of flake graphite with a fineness of 800 mesh to 900 mesh and Quartz powder and high alumina powder are mixed and bonded with sodium silicate solution. The two ends of the resistance core 1 are made of conductive glue 4 mixed with flake graphite and sodium silicate solution with a fineness of 800 mesh to 900 mesh and sodium silicate solution. Bond with electrode 3. The part where the electrode 3 is connected to the two ends of the resistance core 1 is provided with holes, so that the electrode 3 and the resistance core 1 can be firmly connected. On the outer surface of the insulating layer 2 is a glaze layer ...

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Abstract

The invention is a starting resistance, including a resistance core, an insulating layer and electrodes connected with the resistance core and led out of the insulating layer, and its characteristic: the resistance core is mixed of a over 800-eye particulate material with the characteristic that the resistance reduces with the temperature increase at 0-300 deg.C, quartz powder and high aluminum powder, and binding by sodium silicate. As compared with existing technique, it is both small in bulk and able to solve the problems of long starting time of starter and high electric energy consumption of a three-phase cage asynchronous motor as well as high cost of manufacture and moisture proofing.

Description

technical field [0001] The invention relates to a non-adjustable resistor composed of granular material. Background technique [0002] In the prior art, the three-phase squirrel-cage asynchronous motor generally uses an autotransform starter to limit the starting current. However, because the voltage of the secondary side of the autotransform starter has determined the voltage obtained by starting the motor, the recovered voltage when the motor starts can only reach the voltage of the secondary tap of the autotransform starter, resulting in a starting time of up to 8 hours. -20 seconds and a waste of electric energy, and the cost is high, the volume is large, and it is afraid of being damp. Contents of the invention [0003] The main purpose of the present invention is to provide a starting resistor, which is not only small in size, but also can solve the problems of long starting time and large power consumption of the starte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C8/00H02P1/26
Inventor 陈柳武
Owner 陈柳武
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