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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 unable to verify the design structure of capacitor components, delay time, waste materials, etc., and achieve the effect of saving production test time, wasting materials, and saving materials

Active Publication Date: 2008-07-23
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment and comparative test example 2

[0034] Select the capacitor product model BAM11 / √3-100-1W component (component number 1002), 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 it 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] Core braided

No

Applied voltage

kV

Electricity before withstand voltage

Capacitance μF

time

interval

Capacitance after withstand voltage

μF

Test situation

2001

1.2U NE

240

...

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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 for power capacitor elements. Background technique [0002] The life test of current power capacitors is generally tested in accordance with IEC standards or national standards. The specific operation is to place three power capacitors in a temperature-stabilized oven. The temperature of the oven is kept at 60°C or the average maximum temperature of 24 hours plus the temperature rise measured by the production unit (capacitor) at the end of the thermal stability test. Choose between the two higher temperature, then apply 1.40U N (U N The rated voltage of the capacitor) runs continuously for 1000h. Finally, judge 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 is less than the capaci...

Claims

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Application Information

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Patent Type & Authority Applications(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