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Method and apparatus for testing an AFCI/GFCI circuit breaker

  • US 6,426,632 B1
  • Filed: 04/28/2000
  • Issued: 07/30/2002
  • Est. Priority Date: 03/29/1999
  • Status: Expired due to Fees
First Claim
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1. A method for testing an electronically activated circuit breaker having source and load terminals and separable contacts disposed in the line and neutral conductors of the power line and further having arc fault and/or ground fault interrupting capability responsive to differential currents in the line and neutral conductors wherein the circuit breaker under test is connected in a test circuit, comprising the steps of:

  • supplying operating power to the source terminals of the circuit breaker wherein the test circuit provides for connecting the neutral conductor source terminal to a ground in the test circuit;

    coupling testing signals from a test generator in the test circuit to the neutral conductor load terminal of the circuit breaker; and

    monitoring the condition of the separable contacts in the circuit breaker following the supplying of testing signals to the neutral conductor load terminal.

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  • 5 Assignments
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