Three-Phase Disconnect Switch Opening and arcing

VIDEO INFO

Plays: 8,745
Added: Feb 16, 2007
CREATED BY:
grant2053
Channels: Reality

Description:
This video was captured in 2002 at a BPA substation located at the Haskill tap of the Libby-Conkelley No.1 230 kV transmission line near Kalispell Montana. It shows a three phase vertical break disconnect switch attempting to de-energize an unloaded 34 mile long section of transmission line. This switch was part of an experimental design and is no longer in service. Air break disconnect switches are not intended to actively switch load current. In the above clip, the arcing is due to the attempted interruption of comparatively low reactive (capacitive or 'charging') currents drawn by the open transmission line.

Rating:[GA] General Audiences

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