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US 12,306,267 B2Granted
Short-circuit isolator
AssigneeKidde Fire Protection, LLC
InventorPere Moix Olivé
Life of this patent
Estimating the term…
Abstract
A short-circuit isolator includes a switch configured to selectively interrupt an electrical circuit connected to the short-circuit isolator. The short-circuit isolator is configured to cause the switch to interrupt the electrical circuit when a current at the short-circuit isolator exceeds a current threshold and at least one of a voltage at the short-circuit isolator is below a voltage threshold or a resistance of the electrical circuit measured at the short-circuit isolator is below a resistance threshold.
Claims12
A short-circuit isolator comprising:
- a switch configured to selectively interrupt an electrical circuit connected to the short-circuit isolator,
- wherein the short-circuit isolator is configured to cause the switch to interrupt the electrical circuit when a current at the short-circuit isolator exceeds a current threshold and a voltage at the short-circuit isolator is below a voltage threshold;
- a first comparator circuit and a second comparator circuit, wherein the first comparator circuit is configured to detect if the current at the short-circuit isolator is greater than the current threshold;
- wherein the second comparator circuit is configured to detect if the voltage at the short-circuit isolator is less than the voltage threshold;
- wherein the short-circuit isolator is configured to cause the switch to interrupt an electrical circuit connected to the short-circuit isolator when the first comparator circuit detects that the current at the short-circuit isolator is greater than the current threshold and the second comparator circuit detects that the voltage at the short-circuit isolator is less than the voltage threshold.
2 more elements
A short-circuit isolator comprising:
- a switch configured to selectively interrupt an electrical circuit connected to the short-circuit isolator,
- wherein the short-circuit isolator is configured to cause the switch to interrupt the electrical circuit when a current at the short-circuit isolator exceeds a current threshold and a resistance of the electrical circuit measured at the short-circuit isolator is below a resistance threshold;
- the short-circuit isolator further comprising a first comparator circuit and a second comparator circuit, wherein the first comparator circuit is configured to detect if the current at the short-circuit isolator is greater than the current threshold,
- wherein the second comparator circuit is configured to detect if the resistance measured at the short-circuit isolator is less than the resistance threshold, and;
- wherein the short-circuit isolator is configured to cause the switch to interrupt an electrical circuit connected to the short-circuit isolator when the first comparator circuit detects that the current at the short-circuit isolator is greater than the current threshold and the second comparator circuit detects that the resistance measured at the short-circuit isolator is less than the resistance threshold.
2 more elements
A fire protection system comprising:
- a fire control panel;
- and
- a plurality of components electrically connected to the fire control panel in a circuit having a loop configuration;
- wherein the circuit is divided into a plurality electrically-isolatable segments using a plurality of short-circuit isolators, each of the plurality of short-circuit isolators comprising:
- a switch configured to selectively interrupt an electrical circuit connected to the short-circuit isolator,
- wherein the short-circuit isolator is configured to cause the switch to interrupt the electrical circuit when a current at the short-circuit isolator exceeds a current threshold and at least one of a voltage at the short-circuit isolator is below a voltage threshold or a resistance of the electrical circuit measured at the short-circuit isolator is below a resistance threshold.
3 more elements
A fire protection system comprising:
- two fire control panels;
- and
- a plurality of components electrically connected to each of the two fire control panels in a circuit having a bi-directional configuration;
- wherein the circuit is divided into a plurality electrically-isolatable segments using a plurality of short-circuit isolators, each of the plurality of short-circuit isolators comprising:
- a switch configured to selectively interrupt an electrical circuit connected to the short-circuit isolator,
- wherein the short-circuit isolator is configured to cause the switch to interrupt the electrical circuit when a current at the short-circuit isolator exceeds a current threshold and at least one of a voltage at the short-circuit isolator is below a voltage threshold or a resistance of the electrical circuit measured at the short-circuit isolator is below a resistance threshold.
3 more elements
Dependencies are inferred from the claim text.