×

Apparatus and method for testing an arcing fault detection system

  • US 6,313,642 B1
  • Filed: 01/24/1997
  • Issued: 11/06/2001
  • Est. Priority Date: 03/13/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for detecting arcing faults in an electrical distribution system that includes a line conductor connected to a utility power transformer, said system comprising:

  • a current transformer coupled to said line conductor for monitoring the rate of change of electrical current in the line conductor and producing a signal representing the rate of change, means for generating an arcing-fault-detection signal in response to said rate-of-change signal, a test line coupled to said current transformer in the same manner as said line conductor for subjecting said transformer to a test signal simulating a line current produced by an arcing fault, and a signal generator connected to said test line for producing said test signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×