High voltage site alarm signaling system and method for electrical cabinetry

Abstract

A safety system for high-voltage electrical cabinetry presents alarm indications representing alarm conditions of the electrical switchgear cabinet system at every electrical switchgear cabinet during maintenance. The system includes encoder and decoder devices connected to existing switchgear cabinet lighting infrastructure. The encoder devices receive alarm signals from a control system of the electrical switchgear cabinet system and send encoded alarm signals to the decoder devices by modulating power relayed from the encoder devices to the decoder devices and possibly to lamps. The decoder devices decode the encoded alarm signals and present the alarm indications audibly and/or visually using light and sound indicators. A technician performing maintenance can evaluate instantly the importance of the alarm based on the alarm indications and act accordingly.

Dependencies are inferred from the claim text.