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Full-automatic measuring device of load tank

A technology of measuring devices and load boxes, applied in measuring devices, measuring electrical variables, instruments, etc., can solve problems such as unfavorable work efficiency improvement

Active Publication Date: 2011-01-19
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of manual adjustment of the load box gear in the background technology, which is not conducive to the improvement of work efficiency, and propose a method based on the existing conventional detection load box principle, which adopts the method of automatically adjusting the output value of the load box, and automatically controls Adjust the rotary switch or dial switch of the load box to replace manual adjustment and switch, and improve the measurement efficiency of the load box

Method used

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  • Full-automatic measuring device of load tank
  • Full-automatic measuring device of load tank
  • Full-automatic measuring device of load tank

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Embodiment Construction

[0011] Markings in the attached drawings:

[0012] In the accompanying drawings, 1-switching circuit, 2-load box, 3-adjusting mechanism, 4-limiting pile, 5-sliding rod, 6-turntable, 7-motor, 8-linkage rod, 9-moving cabin, 10 - Dial switch.

[0013] Embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0014] as attached figure 1 It is the principle diagram of automatic measurement of the load box. The controllable current source and controllable voltage source in the figure can supply power to the load box respectively. The microprocessor is the main control device, which can analyze, store, record and print the data in the whole process. R is the protection The protection resistance of the current source, the switching circuit 1 switches the controllable current source or the controllable voltage source to supply power to the load box, and the high-precision CT and high-precision PT measure the real-time current an...

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Abstract

The invention relates to a full-automatic measuring device of a load tank, which is composed of a controllable current source, a controllable voltage source, a microprocessor, a protective resistor, a commutation circuit, high-precise current transformer (CT) and potential transformer (PT) and a load tank regulating mechanism. According to the existing normal operating principle for measuring theload tank, the invention adopts the method of automatically adjusting the output value of the load tank to automatically control and adjust the rotary switch or the dial switch of the load tank, and replaces manual regulation and switchover; and thus, load tank verification process does not need manual intervention and can be automatically finished within short time, thus reducing manual input and inconvenience brought by operation, and greatly improving working efficiency.

Description

technical field [0001] The invention relates to a load box full-automatic measuring device, which belongs to the technical field of detection and calibration of instruments and meters in the electric power industry. Background technique [0002] The load box is a measuring device that provides the necessary load value for the verification or calibration test of the power transformer to complete the detection of the transformer error. In order to ensure the accuracy of the transformer detection error, the load box must meet the allowable error stipulated by the state. The load box is divided into two types: voltage load box and current load box. In order to improve the measurement accuracy, the current domestic transformer load box verification work basically uses the load box automatic measuring instrument, which provides current and measures the terminal voltage value of the current load box, Or provide voltage and measure the current value of the voltage load box to achiev...

Claims

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Application Information

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IPC IPC(8): G01R35/02
Inventor 刘飞但小容廖源
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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