Intermediate-frequency vacuum arc movement on TMF contacts

Zhu, Linggang; Wu, Jianwen; Liu, Bin; Sun, Yifei

doi:10.1109/icepe-st.2011.6123048

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…According to this investigation, the split arc occurs at different frequencies. The split arc wasn't observed in our previous study, which is almost at the same arc current and the contact is 66 mm [10] . In Wolf's study, separate arc columns were observed with 65 mm cup-type TMF contacts and 20-35 kA arc current [6] .…”

Section: Discussionmentioning

confidence: 52%

“…Wang Jing investigated the free-expansion arc appearance at intermediate-frequency for axial-magnetics field contacts [9] . In our previous study about the arc appearance and the dynamic volt-ampere characteristics at intermediate-frequency under 66 mm TMF contacts, the split arc was not observed [10] .…”

Section: Introductionmentioning

confidence: 80%

“…The split arc is related to the positive volt-ampere characteristics of the vacuum arc. The positive voltampere characteristics of the vacuum arc have been discussed in our previous study [10] . The vacuum arc is different from the air arc, which has negative voltampere characteristic.…”

Section: Discussionmentioning

confidence: 97%

See 2 more Smart Citations

Motion and Splitting of Vacuum Arc Column in Transverse Magnetic Field Contacts at Intermediate-Frequency

Zhu¹,

Wu²,

Yuan³

2014

Plasma Sci. Technol.

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Arc motion and splitting of vacuum arc at intermediate frequency (400-800 Hz) were investigated under transverse magnetic field (TMF). The experiment was performed on cup-type TMF contacts with contact diameter of 40 mm and a contact gap of 4 mm in a single-frequency circuit. With high-speed photography we characterized the arc appearance at different arc currents from 3.3 kA-rms to 10 kA-rms at intermediate frequencies. As arc current increases from 3.3 kA-rms to 10 kA-rms the arc appearance changes obviously. When current value is 3.3 kArms (current frequency 400-800 Hz), there is almost no splitting arc; when the current exceeds 5 kA-rms (current frequency 400-800 Hz), the arc rotates at a speed above 20 m/s, accompanied by an observable splitting arc. The splitting arc could be observed at different frequencies and the arc-voltage had no noises when splitting occurred. The motion direction and the velocity of arc column were studied. Finally, the formation of a split arc was discussed.

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Section: Discussionmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 80%