Upload

Loading icon Loading...

This video is unavailable.

500,000 volt electrical arc

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to like enigma800's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to dislike enigma800's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to add enigma800's video to your playlist.

Published on May 11, 2007

This device is called an isolator. It's a mechanical disconnect that opens and closes a 500,000 volt electrical transmission line at the El Dorado electrical substation near Boulder City, Nevada. Another device called a switcher is supposed to open the circuit first, then the isolator opens to physically disconnect the circuit. The switcher has had a history of one of the three phases failing to open. When this happens, the isolator opens with one phase still energized. Since the isolator isn't designed to open hot, there's no arc suppression. and the result is quite spectacular. Because of the history of periodic failures when the switcher has been opened, a video camera had been set up to record the event should it happen again. They were in luck and caught it. The arc ends when an upstream circuit breaker is opened. Full credit goes to Neil Brady who captured this amazing sight. The "wow" at the end of the video says it all.

Loading icon Loading...

Loading icon Loading...

Loading icon Loading...

Loading icon Loading...

Ratings have been disabled for this video.
Rating is available when the video has been rented.
This feature is not available right now. Please try again later.

Loading icon Loading...

Loading...
Working...
Sign in to add this to Watch Later

Add to