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A skeleton of a high-voltage arm and an impact resistance voltage divider

A technology of impact resistance and high-voltage arm, which is applied in the direction of voltage divider, wound resistance element, spiral coil/screw disk resistance element, etc., can solve the problem that the skeleton structure is not suitable for resistance voltage divider, and achieve the goal of reducing residual inductance Effect

Active Publication Date: 2016-12-21
SHANGHAI INST OF MEASUREMENT & TESTING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This insulating skeleton mainly solves the insulation problem of high-voltage transformers, but does not involve the reduction of inductance, and the skeleton structure is not suitable for resistor dividers

Method used

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  • A skeleton of a high-voltage arm and an impact resistance voltage divider
  • A skeleton of a high-voltage arm and an impact resistance voltage divider
  • A skeleton of a high-voltage arm and an impact resistance voltage divider

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0032] This embodiment is the manufacture of a 300kV impact resistance voltage divider: the frame of the high-voltage arm is made of an epoxy resin insulating board with a width of 35mm, a length of 600mm, and a thickness of 10mm, and the resistance wire is made of enamelled Kamasi imported from Germany. as follows:

[0033] Name: Enamelled Kamasi (NiCr20ALSi)

[0034] Specification: 0.16mm

[0035] Resistance per meter: 66.19Ω / m

[0036] Resistivity: 132μΩ*cm

[0037] Density: 8.0g / cm3 (20°C)

[0038] Heat capacity: 0.46J / gK

[0039] Temperature coefficient: <5ppm (20°C to 105°C)

[0040] The resistance wire is wound on the insulating board skeleton by double-wire double-layer non-inductive winding method. The length of the resistance body is about 600mm. Finally, it...

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Abstract

The invention discloses a skeleton of a high-voltage arm, which is rectangular. This kind of frame can effectively reduce the residual inductance and alleviate the distortion of the output waveform. The resistance wire is wound on the insulating board skeleton by double-wire pair winding without induction. The length of the resistor body is about 600mm. Finally, it is treated with vacuum paint film. The calculated value of the shape skeleton is 145.30μH, and the measured square wave response of the impact resistance voltage divider is less than 10ns.

Description

technical field [0001] The invention relates to the field of power system power devices, in particular to a skeleton of a high-voltage arm and an impact resistance voltage divider using the skeleton. Background technique [0002] There are many measurement methods for impulse high voltage, and the impulse voltage divider measurement system is more commonly used. The traditional impact voltage divider measurement system consists of a voltage divider and high voltage leads. The impact voltage divider can be divided into resistive voltage divider, capacitive voltage divider and resistance-capacitance voltage divider. The impact resistor divider is composed of a shielding electrode, a high-voltage arm and a low-voltage arm, and the high and low voltage arms are all resistance arms. Its schematic diagram is provided by figure 1 shown, where V IN is the measured high voltage, V out For the low-voltage signal output by the voltage divider, the high-voltage arm resistance R 1 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C3/18H01C17/04G01R15/04
Inventor 潘洋徐真袁晟来磊石雷兵
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH
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