360 Degree Phasor Diagram Drawing Template

Abstract

The invention provides a 360 degree phasor diagram drawing template. The 360 degree phasor diagram drawing template comprises a transparent disk; the center of the disk is provided with a first through hole; a circle of angle scales are arranged on the disk to surround the center of the circle; a second through hole, a third through hole and a fourth through hole are formed at the positions corresponding to the 0 degree scale, the 120 degree scale and the 240 degree scale respectively; a circle of arc-shaped groove is formed along the scales; the arc-shaped groove penetrates the disk; a gap is reserved between the head portion and the tail portion of the arc-shaped groove; the arc-shaped groove comprises three sections; spaces are reserved at the positions corresponding to the 60 degree scale, the 180 degree scale and the 300 degree scale respectively; the edge of the disk comprises a circle of angle scales; the second through hole, the third through hole and the fourth through hole are formed in the periphery of the arc-shaped groove. According to the 360 degree phasor diagram drawing template, the arithmetic step is omitted during drawing and accordingly the judgment accuracy is improved; the length of three types of lines can be well controlled and accordingly the attractive and neat effect is achieved; the360 degree phasor diagram drawing template is suitable for the drawing of three-phase four-line and three-phase three-line vector diagrams.

Description

technical field [0001] The invention relates to a 360-degree phasor diagram drawing template, which is a tool for drawing vector diagrams in the electric power field. Background technique [0002] When calculating the error of the wrong wiring of the electric energy meter, it is necessary to draw a vector diagram to analyze and judge according to the measured data. When drawing the angle, the general protractor is only 180°, and the measured data is within 0°~360°, such as U1I2 =254°degree, there are three commonly used methods: [0003] 1. Add (254°-180°) to 180° degree = 74° degree; [0004] 2. Reverse measurement drawing, (360°-254°)=106° degrees; [0005] 3. Add (254°-240°) = 14° to the previous phase voltage line of 240°. [0006] No matter which of the above methods is used, there will always be a process of mental calculation, which is prone to errors; and the drawing is relatively slow, which wastes time; the length of the lines can only be controlled by feeling, ...

AI Technical Summary

Problems solved by technology

[0006] Regardless of the above methods, there will always be a process of mental calculation, which is prone to errors; and the drawing is slow, which wastes time; the length of the lines can only be controlled by feeling, and often vary in length

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