Studies in inverse magnetron discharges of vacuum interrupters &amp;#x2014; Part 3 &amp;#x2014; Anomalies

Falkingham, L.T.; Reeves, R.; Mistry, S.

doi:10.1109/deiv.2012.6412435

Cited by 1 publication

(1 citation statement)

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“…Conditioning breakdowns can remove the sources for the field emission and microdischarges, and can explain the disappearance of the high pressure on repeated measurements. This behavior, combined with the occasional irregular output of the magnetron test [25], emphasize the need for careful test procedures and VI experience when evaluating the internal pressure of VI's in the field. short-circuit ops.…”

Section: Pressure After Testingmentioning

confidence: 99%

Long-term vacuum integrity of vacuum interrupters

Taylor

Lawall

Gentsch³

2014

2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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Vacuum interrupters (VI's) are the primary switching technology for medium voltage (1-52kV) electrical power systems. The extensive field service of VI's is now raising interest in determining the end of life for these devices, with the primary concern being the loss of vacuum. The manufacturing method of the VI's can affect the calculated long-term life. In particular, there are three main design groups to evaluate. The key differences between these three groups are the processing temperature and permeability of the housing to hydrogen and helium. Many potential failure modes occur independently of the field application or lack thereof, and can be evaluated based data from VI's in long-term storage or after operations, such as seen during development and certification testing. The field returns history from VI manufacturers also provided critical information on the VI lifetime. These various factors can be combined to identify risk factors that could alter the estimated life.I.

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Section: Pressure After Testingmentioning

confidence: 99%