BUS Insulator Animal Guard

TE Connectivity’s (TE) Raychem BISG improved isolation guard prevents animal-caused outages in electrical substation equipment. BISG discs have been successfully eliminating outages from squirrels, raccoons, opossums, cats, and other animals in substations for years. The BISG guard has been designed to provide the same great protection with added features. Its “invisible” design allows easier visibility of switch blades and other equipment components through the guard. This new design allows for easy field modifications and can be reduced by trimming along the grill ribs for tight phase-to-phase insulator applications. The BISG guard allows easier hot-stick installation by incorporating a threaded area in the guard. The integrated threads eliminate the need to hold a nut while installing the bolt assembly with a hot-stick. The bolted design positively and tightly secures the device onto the insulator or bushing, preventing loosening or drooping caused by wind, snow, ice, or animals.