POWER FACTOR TESTING

LINDA NOWAK

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POWER FACTOR TESTING

机译：功率因数测试

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The purpose of "Doble testing", or power factor testing, SF_6 (sulfur hex-afluoride) circuit breakers is to detect the presence of contamination and/or deterioration of the breakers insulating system. This process will allow corrective actions to be taken to ensure the integrity of the breaker. The Doble test is completed by measuring the insulation's dielectric-loss and capacitance and calculating the power factor. The increase of the dielectric loss and, consequently, the power factor, is representative of an increase in contamination and/or deterioration of the insulating system. The Doble test can detect a number of problems including the following: 1. Moisture contamination resulting from leaks or incomplete cleaning and drying 2. Deterioration of line-to-ground and contact-grading capacitors 3. Surface contamination of weathersheds 4. Deterioration of insulating components such as operating rods, interrupters, interrupter supports caused by corrosive arc by-products. 5. Internal corona damage of components such as operating rods and interrupters as a result of voids within the insulation system 6. Impurities, contamination and/or particles within the SF_6 gas.

机译：SF_6（六氟化硫）断路器的“双重测试”或功率因数测试的目的是检测断路器绝缘系统是否存在污染和/或劣化。此过程将允许采取纠正措施以确保断路器的完整性。通过测量绝缘体的介电损耗和电容并计算功率因数来完成Doble测试。介电损耗的增加以及功率因数的增加代表了绝缘系统的污染和/或劣化的增加。 Doble测试可以检测出许多问题，其中包括：1.由泄漏或清洁和干燥不完全引起的水分污染2.接地线和接触平整电容器的劣化3.风雨棚的表面污染4.绝缘层的劣化腐蚀性电弧副产物引起的部件，例如操作杆，灭弧室，灭弧室支架。 5.绝缘系统内的空隙导致诸如操作杆和灭弧室等组件的内部电晕损坏。6. SF_6气体中的杂质，污染和/或颗粒。

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《Electricity Today》 |2014年第7期|17-17|共1页
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LINDA NOWAK;
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