A kind of preparation method of sensor for high-voltage electrical appliances

Abstract

The invention relates to a method for preparing a sensor for a high-voltage electrical appliance, comprising the following steps: shell processing; capacitor material selection; capacitor preliminary design; capacitor fine design: considering the margin size between two adjacent series of metal layers of the metallized film , The traditional size of the margin is directly taken as an integer, which will break through the size of the capacitor. Therefore, the size of the margin is optimized to increase the size of the margin to two decimal places; winding; shaping; gold spraying; packaging; testing; assembly. The advantage of the present invention is that: the preparation method of the present invention optimizes the design of the margin size of the capacitor and cooperates with a unique calculation formula, so that the size of the margin size can be accurate to two decimal places, thereby reducing the margin as much as possible The width of the size corresponds to the increase in the number of series of metal layers in the same space, so as to meet the requirements of the grid voltage and prepare capacitors that can meet the high voltage level in the same installation space.

Description

technical field [0001] The invention relates to a sensor for high-voltage electrical appliances, in particular to a preparation method of the sensor for high-voltage electrical appliances. Background technique [0002] High-voltage electrical appliances are equipment used to realize closing, breaking, protection, control, regulation, and measurement in high-voltage lines. General high-voltage electrical appliances include switching electrical appliances, measuring electrical appliances and current limiting and voltage limiting electrical appliances. The internationally recognized boundary line for high and low voltage electrical appliances is 1kV for AC (1500V for DC). For AC above 1kV is high-voltage electrical appliances, 1kV and below are low-voltage electrical appliances. Transformers are sometimes included in high-voltage electrical appliances. In high-voltage electrical product samples, drawings, technical documents, factory inspection reports, type test reports, in...

AI Technical Summary

Problems solved by technology

As we all know, high-voltage electrical appliances will generate high voltage when they work, so conventional sensors are prone to failure and cannot work normally when they work in this state.

Therefore, there is a need for a sensor that meets the voltage requirements of the grid for the manufacture of high-voltage electrical appliances. The core of the sensor's manufacturing is the film capacitor inside the sensor. The film capacitor is mainly wound by a metallized film, and its voltage level mainly depends on The number of metal layers on the metallized film is determined by the number of metal layers. The more the number of metal layers, the higher the withstand voltage level. However, the corresponding volume will be larger, and margins need to be left between adjacent metal layers. , and the size of the capacitor installed in the sensor housing is fixed. In addition, the current size of the margin is designed to be rounded. In this way, it is easy to cause the size of the capacitor to exceed the standard and cannot be installed.

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