Patent ID: 8208243
Filing Date: 2012-06-26
Classification: G01R,H01H

Abstract:
1. An electrical switchgear component comprising: an electrically insulating and flame retardant housing having means for mounting the housing on a panel of a protective enclosure having openings that are gas permeable; at least one electrical conducting element contained within the housing for conducting electrical currents therethrough, the electrical conducting element being substantially stationary with respect to the housing; at least one electrically insulating optical element substantially transparent to infrared energy having a first end within the housing receiving infrared light in a range of 3-15 μm from heating of the electrical conducting element and a second end passing through the housing to be visible from outside of the housing; the optical element positioned within the housing and adapted to receive and conduct infrared light substantially only from material stationary with respect to the housing and positioned and adapted to allow passage of that light to a remote thermographic camera.