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Method for testing life of power condenser element

A power capacitor and life test technology, applied in the direction of testing dielectric strength, etc., can solve the problems of wasting materials, delaying time, and failing to verify the design and structure of capacitor components, and achieve the effect of wasting materials, saving materials, and saving production test time.

Active Publication Date: 2010-06-02
XIAN HIGH VOLTAGE APP RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The life test of this kind of power capacitor not only delays time but also wastes materials, and at the same time cannot directly verify the design structure of the capacitor element

Method used

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  • Method for testing life of power condenser element
  • Method for testing life of power condenser element
  • Method for testing life of power condenser element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment and comparative test example 2

[0034] Select the component (component number 1002) with the product model of BAM11 / √3-100-1W for making capacitors, randomly select 30 components and place them in the oil tank. After the oil tank is filled with insulating oil C101, it is placed in an oven with a constant temperature. The oven temperature Keep at 60°C, first apply 1.2 times the rated voltage of the capacitor element to the extracted capacitor element (U NE 2.1170kV) for 16 hours, and then apply a voltage of 1.4U in turn NE , 1.6U NE , 1.8U NE , 2.0U NE , 2.2U NE , 2.4U NE , the corresponding test time is 12h, 8h, 4h, 4h, 4h, 4h. See Table 3 for the test data of components with capacitor model BAM11 / √3-100-1W.

[0035] table 3

[0036]

[0037] Table 3 shows that when the sampling capacitor element is completed to 2.2U NE During the withstand voltage process, 2 capacitor elements are broken down, 28 are not broken down, and the number of breakdowns does not exceed one-third of the total number of sa...

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Abstract

The invention relates to a service life measurement method of power capacitor component, belonging to the power capacitor measurement technical field. The inventive method comprises 1, sampling the capacitor components and arranging the sample capacitor components in a sealed oil groove, filling insulated oil into the oil groove, arranging the oil groove into a temperature-constant oven at 55-65DEG C, 2, adding 1.15-1.25, 1.35-1.45, 1.55-1.65, 1.75-1.85, 1.95-2.05 and 2.15-2.25 powers of nominal voltage UNE of the capacitor components on the sample capacitor components, while the relative operation times are 17-15h, 15-13h, 9-7h, 5-3h, 5-5h and 5-3h, 3, numbering the breakage number of the capacitor components, judging the service life test acceptable when the breakdown number is lower than 1 / 3 sample capacitor components.

Description

technical field [0001] The invention relates to the field of power capacitor detection, in particular to a life test method of a power capacitor element. Background technique [0002] The life test of current power capacitors is generally carried out in accordance with IEC standards or national standards. The specific operation is to put the three power capacitors in a temperature-stabilized oven, and the oven temperature is kept at 60°C or the average maximum temperature for 24 hours plus the temperature rise measured by the production unit (capacitor) at the end of the thermal stability test, whichever is selected. The higher temperature, then apply 1.40U N (U N It is the rated voltage of the capacitor) to run continuously for 1000h. Finally, it is judged whether the service life and performance of the capacitor can meet the ten-year life requirement, and the qualified standard is that the change between the last measured capacitance and the initial measured capacitance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 郭天兴吴俊丽郭晓莉
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD