Portable circuit interrupter shutoff testing device and method
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United States of America Patent
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-
Feb 6, 2007
Grant Date -
May 15, 2003
app pub date -
Nov 12, 2002
filing date -
Nov 13, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A portable circuit interrupter shutoff testing device and method, including a high current switch controlled by a timing circuit that allows current to flow through the switch and a small series resistance (in order to trip the instantaneous-trip function of the interrupter, as opposed to the overload-trip) for a short time period relative to the sine wave of the electrical power. A button activates the timing circuit which in turn activates the switch and current flows limited by the internal resistor of the device. By limiting the on time of the device to one of a few half cycles, the user can test if the circuit interrupter responds as quickly as specified by the manufacturer. A method includes receiving a stimulation indication, and selectively connecting an electrical load is sufficient to trigger the instantaneous-trip function of the circuit-interrupter.
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