Limiting energy in wiring faults combined upstream and downstream protection
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United States of America Patent
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N/A
Issued Date -
May 1, 2008
app pub date -
Jul 24, 2007
filing date -
Jul 25, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An intrinsically safe system in a hazardous atmosphere includes a power supply. The system includes a plurality of load devices. The system includes wiring in communication with the power supply and the load devices that is located in the hazardous atmosphere. The system includes a protector connected to the wiring which provides upstream protection by detecting dropping input terminal voltage and provides downstream protection by limiting output current. A method for providing power in a hazardous atmosphere includes the steps of placing wiring in communication with a power supply and a plurality of load devices to the hazardous atmosphere. There is the step of protecting the wiring with a protector connected to the wiring which provides upstream protection by detecting dropping input terminal voltage and provides downstream protection by limiting output current.
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