H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 3/16 (2006.01) H01H 71/12 (2006.01) H01H 83/00 (2006.01) H01H 83/02 (2006.01) H02H 1/06 (2006.01) H02H 1/00 (2006.01) H02H 3/33 (2006.01)
Patent
CA 2341945
An arcing fault protection assembly and a corresponding method determine whether arcing is present in electrical circuits. The assembly powers-up quickly without dissipating excessive heat while power is being supplied to the assembly. The assembly comprises a sensor, a broadband noise circuit, a controller, and a dual-mode power supply. The sensor detects a current flowing in an electrical circuit and develops a corresponding sensor signal. The broadband noise circuit determines the presence of broadband noise in the sensor signal and produces a corresponding output signal. The controller processes the sensor signal and the output signal in a predetermined fashion to determine whether an arcing fault is present in the circuit. The dual-mode power supply supplies power to the sensor, broadband noise circuit and controller using a first mode and later switching to a second mode. The first mode reaches steady state faster than the second mode.
Dvorak Robert F.
Grattan Brian G.
Haun Andy A.
Larson Brett E.
Wong Kon B.
Marks & Clerk
Square D. Company
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