Devices, methods, and systems for alternating current circuits for airfield lighting
AssigneeHoneywell International Inc.
InventorsNipun Kumar Chawda, Hans-Willy Schuett, Reiner Wiechert
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Abstract
Devices, methods, and systems for alternating current circuits for airfield lighting are described herein. One system includes a circuit comprising an isolation transformer, a protection hardware circuit coupled to the isolation transformer, wherein the protection hardware prevents a voltage between an electrical contact of the circuit and a ground contact from meeting or exceeding a threshold voltage, and a load coupled to the protection hardware circuit to receive electrical energy from the isolation transformer.
Claims18
A system for alternating current circuits for airfield lighting, comprising:
- a circuit comprising an isolation transformer;
- a protection hardware circuit coupled to the isolation transformer, wherein the protection hardware circuit prevents a voltage between an electrical contact of the circuit and a ground contact from meeting or exceeding a threshold voltage, and wherein the protection hardware circuit includes a circulating path through a normally open (N/O) relay contact for load sensing logic, and wherein the protection hardware circuit includes a load sensor to determine when a load is decoupled from the protection hardware circuit;
- and
- the load coupled to the protection hardware circuit to receive electrical energy from the isolation transformer.
An alternating current protection device, comprising:
- an enclosure including an input electrically coupled to an airfield lighting circuit that includes an electrical power source, wherein the enclosure further includes:
- an isolation transformer to receive electrical energy via the input from the electrical power source;
- and
- a protection hardware circuit coupled between the isolation transformer and a load to receive electrical power from the electrical power source, wherein the protection hardware circuit is configured to prevent a voltage between an electrical contact of the airfield lighting circuit and a ground contact from meeting or exceeding a threshold voltage, and wherein the protection hardware circuit provides a circulating path through a normally open (N/O) relay contact for load sensing logic.
A system for alternating current circuits for airfield lighting, comprising:
- a source regulator coupled to an electrical power source;
- a plurality of isolation transformers coupled in series with the source regulator;
- a plurality of protection hardware devices coupled to each of the plurality of isolation transformers, wherein each of the plurality of protection hardware devices provide a circulating path through a normally open (N/O) relay contact for load sensing logic;
- and
- a plurality of airfield lamps coupled to each of the plurality of protection hardware devices, wherein the plurality of airfield lamps are coupled to a corresponding triple double throw (3PDT) relay of a corresponding protection hardware device of the plurality of protection hardware devices.
Dependencies are inferred from the claim text.