Back to results
US 2021/0175702 A1Published application
Fault Protection Device with Ground Trip Delay and Method
AssigneeS&C Electric Company
InventorsChristopher McCarthy, Raymond P. O'Leary
Life of this patent
Estimating the term…
Abstract
A reclosing fault protection device detects a partial bypass state. Upon detecting the partial bypass state, the fault protection device implements a ground trip delay operating state. The ground trip delay operating state provides a delayed ground trip response characteristic.
Claims16
A fault protection device adapted to couple between a supply side and load side of a power distribution system to isolate load side faults from the supply side, the fault protection device comprising:
- a fault interrupter having a first terminal to couple to the supply side and a second terminal to couple to the load side, the fault interrupter having a first operating state and a second operating state, the first operating state defining a first fault response associated with a non-bypassed or total bypassed state of the fault interrupter and the second operating state defining a second fault response responsive to a partial bypass state of the fault interrupter;
- the first operating state and the second operating state being automatically selected by the fault protection device upon detecting a parameter indicative of the partial bypass state.
A method of providing a ground trip delay state in a fault protection device comprising:
- determining a partial bypass condition;
- and
- delaying ground trip operation of the fault protection device.
Dependencies are inferred from the claim text.