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An Impedance Device for High Voltage Load Test

A high-voltage load and test loop technology, applied in the field of impedance devices, can solve the problems of high insulation performance requirements, inability to achieve complete insulation, large capital and test sites, etc., to achieve the effect of avoiding influence

Active Publication Date: 2016-04-20
SUZHOU ANTAI TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electrical testing is an indispensable and important link in the process of designing and manufacturing electrical appliances. It is of great significance to the continuous improvement of products and the development of new products. The existing electrical testing is divided into high-voltage electrical testing and low-voltage electrical testing, whether it is high-voltage electrical or Low-voltage electrical appliances have a variety of different specifications and performance parameter requirements, so it is often necessary to design a variety of test circuits when testing electrical appliances of different specifications. Each circuit is designed with a different impedance device, so it is necessary to design and manufacture a lot of impedance The device not only needs a lot of funds and test sites, but also needs to frequently replace the test circuit, which does not meet the requirements of environmental protection and energy saving
In addition, due to the high voltage of high-voltage electrical appliances, the requirements for their insulation performance are also very high. When testing high-voltage electrical appliances, the test environment also needs absolute insulation. Existing high-voltage electrical appliances often cannot achieve complete Insulation requirements

Method used

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  • An Impedance Device for High Voltage Load Test
  • An Impedance Device for High Voltage Load Test
  • An Impedance Device for High Voltage Load Test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] see Figure 1-Figure 3, as shown in the illustration, a high-voltage load test impedance device is connected in series in the test circuit 1 of electrical products for load regulation. The test circuit 1 has two access points 11. The above-mentioned impedance device includes an impedance unit and An insulating support for carrying the impedance unit, the impedance unit includes an input end 21, three inductance elements 22, four switching ends 23 and an output end 24, the input end 21 and the three inductance elements 22 are connected in series in sequence; four The four switching terminals 23 are respectively connected to the input terminal 21 and the output side of the three inductive elements 22; the output terminal 24 is switched and connected to the four switching terminals 23 and connected to one of the access points 11; the input terminal 21 is connected to the other access point 11.

[0051] Each inductance element 22 is also connected in parallel with a shunt r...

Embodiment 2

[0058] see Figure 4 , as shown in the legend therein, the rest is the same as the first embodiment, the difference is that the inductance element 22 includes four air-core coils 221 connected in series and coaxially stacked, carrying and clamping four air-core coils 221 Two splints 222 of the core coil and three backing plates 223 arranged between the adjacent air-core coils 221, the output end of each air-core coil 221 is arranged outside the air-core coil 221 and clamped and fixed by the wire clamp 224 .

[0059] The coil of the inductance element is an air-core coil 221 with a pie-shaped structure, and a backing plate 223 is added between the layers to improve the insulation level and structural strength of the air-core coil 221. And fix with wire clip 224 to facilitate connection.

Embodiment 3

[0061] see Figure 5 , as shown in the legend therein, the rest is the same as that of Embodiment 2, the difference is that the air core coil 221 is also provided with a plurality of pads 225 at intervals along its radial direction, and the pads 225 are made of epoxy glass material.

[0062] The air-core coil 221 is provided with spacers 225 along its radial direction for isolating the inner and outer rings of the coil. The spacers are made of epoxy glass material to increase the insulation performance of the air-core coil 221 .

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PUM

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Abstract

The invention discloses an impedance device for a high-voltage load test. The device is connected in series to a test circuit of an electronic product for load adjustment and the test circuit is provided with two connection points. The impedance device is characterized by including one or more impedance units connected in series and an insulating support used for carrying the impedance units. Each impedance unit includes an input end, N impedance elements, N+1 switch ends and an output end, wherein the input end is in series connection with the N impendence elements; and the N+1 switch ends are connected respectively with the input end and the output sides of the N impedance elements. The impedance device for the high-voltage load test is capable of adjusting impedance into a plurality of values and meeting the demands of high-voltage load tests with a plurality of demands, convenient and rapid in impedance-value adjusting and capable of reducing device cost effectively. A casing of the impedance device adopts an all-insulating structure so that effects of a metal structure on resistor elements and inductor elements are avoided.

Description

technical field [0001] The invention relates to an impedance device, in particular to an impedance device for a high voltage load test. Background technique [0002] The electrical test is to verify the various performances that electrical appliances should possess under normal operation and failure conditions. There are many comprehensive effects of such factors, so the performance index and reliability of the work must be verified by means of verification. [0003] Electrical testing is an indispensable and important link in the process of designing and manufacturing electrical appliances. It is of great significance to the continuous improvement of products and the development of new products. The existing electrical testing is divided into high-voltage electrical testing and low-voltage electrical testing, whether it is high-voltage electrical or Low-voltage electrical appliances have a variety of different specifications and performance parameter requirements, so it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R1/00G01R31/00
Inventor 高亦南胡士成王鸿
Owner SUZHOU ANTAI TRANSFORMER