G - Physics – 08 – C
Patent
G - Physics
08
C
G08C 23/04 (2006.01) H02H 1/06 (2006.01) H02H 3/04 (2006.01) H02J 17/00 (2006.01)
Patent
CA 2214471
An arrangement is provided to power and initiate the output of information sensed and/or stored by a device in a sealed environment having a viewing window. The device is powered and the output is initiated by the input of a light source to the device. When the output is initiated, the device provides a display representing the information. In a specific arrangement, the device scrolls to display the information on a sequential, repetitive basis while the light source is directed onto the device. In one specific embodiment, the device is powered by a solar cell or the like. In one specific application of the invention, the information represents the real- time primary voltage of components and circuitry within the switchgear. In another specific application of the invention, the device is located within a sealed switchgear enclosure and the information represents the faulted phase or phases of the power distribution circuit to which the switchgear is connected. The information is obtained and stored in a non-volatile memory before the circuit is deenergized. Alternatively, a non-volatile storage arrangement is provided that can be sensed after the circuit is deenergized, e.g. mechanical or magnetic.
Osler Hoskin & Harcourt Llp
S&c Electric Company
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