Line isolators for isolating multiple faults in emergency systems

摘要

A system for isolating faults in emergency systems, the system including first and second power lines, and one or more zones. Each zone has first and second zone line isolators, the first zone line isolator is connected between the first power line and the respective zone, and the second line isolator is connected between the second power line and the respective zone. Each first line isolator is configured to disconnect the zone from the first power line upon occurrence of a short circuit in the zone. Each second line isolator is configured to connect power from the second power line upon occurrence of an open circuit in the zone.

主权项

1. A system for isolating faults in emergency systems, the system comprising:
first and second power lines; and a plurality of zones, each zone including a first zone line isolator connected to the first power line, and a second zone line isolator connected to the second power line, and one or more emergency devices connected between the first zone line isolator and the second zone line isolator, wherein when a short circuit fault is detected in at least one of a plurality of zones, each first zone line isolator is configured to disconnect the first power line from the respective zone, and wherein each of the plurality of zones is configured to determine if the short circuit fault is present in the zone, and wherein each first zone line isolator is configured to close for each respective zone that does not contain the short circuit fault in order to rovide ower to the respective zone from the first power line.