Influence of Contact Contour on Breakdown Behaviors in Vacuum Under Uniform Field
Release Time:2025-04-30
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- Date:
- 2025-04-30
- Title of Paper:
- Influence of Contact Contour on Breakdown Behaviors in Vacuum Under Uniform Field
- Journal:
- IEEE Trans. Dielctric and Electrical Insulation
- Summary:
- We experimentally investigated the influence of contact contour on breakdown characteristics in vacuum under uniform field. Four vacuum interrupters were used and their contact contours were designed to obtain an effective area (S
eff) from 211 mm 2to 550 mm2. The contact parameters were contact diameter 42.8 mm, contact gap 6 mm, contact thickness 16 mm and contact material CuCr50. Basic impulse level (BIL) voltage (1.2 × 50 μs) was applied. Experimental resu lts revealed that the effective area Seffhad a significant influence on the conditioning process. The larger theeffective area was, the slower the conditi oning process was. When the breakdown voltage saturated, the breakdown prob ability distribution followed a Weibull distribution. The shape para meter that r epresented the breakdown voltage scatter was constant, independent of the effective area. The effective area (Seff) had no significantinfluence on the breakdown voltage under a uniform field in vacuum.
- Co-author:
- Zhang,Liu,Cheng,Yang,Geng,wang
- Volume:
- Vol. 16, Issue 6
- Page Number:
- 1717-1723
- Translation or Not:
- No
- Date of Publication:
- 2009-09-24