Device for testing clamping force between moving contact and fixed contact of isolating switch

Abstract

moving contact (2) facing towards the base, and a conducting undersaturation fixed contact piece (3-1), a saturation fixed contact piece (3-2) and a supersaturation fixed contact piece (3-3) are arranged opposite to the moving contact; the three fixed contact pieces are all fixed on the base (5) and sequentially away from the moving contact (2) according to arrangement distances; the moving contact (2) is connected with a positive pole of a power supply; the undersaturation fixed contact piece (3-1), the saturation fixed contact piece (3-2) and the supersaturation fixed contact piece (3-3) are respectively used for controlling and switching an undersaturation indicator light (D1), a saturation indicator light (D2) and a too-tight clamping force indicator light (D3) through the electricaldisplay circuit to correspondingly display.The invention relates to a device for testing clamping force between a moving contact and a fixed contact of an isolating switch. The device comprises a mechanical testing part and an electrical display circuit, wherein the mechanical testing part comprises a longitudinally extending base (5), and the base is internally provided with an elastic prepressing mechanism; the end part of the elastic prepressing mechanism is provided with a connecting rod, and a testing moving contact (1) is fixed on the connecting rod; the testing moving contact is elastically and unstably provided with a conductor

Description

technical field [0001] The invention relates to a device for testing the clamping force of a dynamic and static contact of an isolating switch. Background technique [0002] After the CW46 series isolating switch is assembled, it is necessary to test the clamping force of the dynamic and static contacts. At present, the known clamping force test method is to use the electronic sensor clamping force test device for testing, because the electronic sensor clamp When testing the CW46 series isolating switch, when the moving contact of the main knife of the isolating switch touches the moving contact of the testing device, the measuring device uses an electronic sensor to display the clamping force value through the weighing display, and because The electronic sensor has high sensitivity, and the digital display changes continuously during the whole test process. It takes about 30 minutes for each test to stabilize the value, and the clamping force test needs several adjustments ...

AI Technical Summary

Problems solved by technology

[0002] After the CW46 series isolating switch is assembled, it is necessary to test the clamping force of the dynamic and static contacts. At present, the known clamping force test method is to use the electronic sensor clamping force test device for testing, because the electronic sensor clamp When testing the CW46 series isolating switch, when the moving contact of the main knife of the isolating switch touches the moving contact of the testing device, the measuring device uses an electronic sensor to display the clamping force value through the weighing display, and because The electronic sensor has high sensitivity, and the digital display changes continuously during the whole test process. It takes about 30 minutes for each test to stabilize the value, and the clamping force test needs several adjustments to meet the technical requirements, resulting in low work efficiency, and the electronic sensor The price is expensive and the service life is short. After about 500 times of use, it will start to malfunction or even be damaged.

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