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US 2016/0365718 A1Published application
Device for detecting a fault in an ac supply
AssigneeShakira Limited
InventorRaymond Legatti
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AssigneeShakira Limited
InventorRaymond Legatti
Estimating the term…
A device for detecting a fault in an AC supply comprising a detection circuit for detecting a fault in an AC supply to a load and providing a corresponding output. A disconnect circuit disconnects the load from the supply in response to an output from the detection circuit. The device also includes a generator of intermittent test pulses, and a test circuit coupled to the detection circuit and containing a first solid state switch. Each test pulse turns on the solid state switch for the duration of the test pulse so that a current simulating the fault flows intermittently in the test circuit and a corresponding output is provided by the detection circuit. The device further comprising means to disable the disconnect circuit in response to each test pulse.
A device for detecting a fault in an AC supply, comprising a detection circuit for detecting a fault in an AC supply to a load and providing a corresponding output, a disconnect circuit to disconnect the load from the supply in response to an output from the detection circuit, a generator of intermittent test pulses, and a test circuit coupled to the detection circuit and containing a first solid state switch, each test pulse turning on the solid state switch for the duration of the test pulse so that a current simulating the fault flows intermittently in the test circuit and a corresponding output is provided by the detection circuit, the device further comprising means to disable the disconnect circuit in response to each test pulse.
Dependencies are inferred from the claim text.