http://www.freshpatents.com/High-voltage-switches-with-arc-preventing-or-extinguishing-devices-dtnewntc218.php USPTO Class 218 - High-voltage switches with arc preventing or extinguishing devices en-us Wed, 30 Apr 2008 12:25:25 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Electrical-switchgear-dt20080424ptan20080093344.php Wed, 30 Apr 2008 12:25:25 -0700 Electrical switchgear, such as a circuit breaker, must in general provide good dielectric strength in open position in order to avoid discharge. To improve the dielectric strength capacitors are often arranged in parallel between the contacts of the switchgear. For very high voltage applications, for example >500 kV, two circuit...