×

Trip signal verifying method and apparatus

  • US 20020145841A1
  • Filed: 04/06/2001
  • Published: 10/10/2002
  • Est. Priority Date: 04/06/2001
  • Status: Active Grant
First Claim
Patent Images

1. A trip unit comprising:

  • a sensor for sensing a condition of a circuit providing electricity to a load;

    a signal converter for converting signals generated by said sensor into a digital value indicative of said condition;

    a microcontroller configured to process said digital value and generating a first signal and a second signal in response to an overcurrent condition; and

    a logic device configured to process said first signal and said second signal and generate a trip signal in response to said first signal and said second signal.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×