POWER DISTRIBUTION SYSTEM AND ELECTRICAL SWITCHING APPARATUS EMPLOYING A FILTER TRAP CIRCUIT TO PROVIDE ARC FAULT TRIP COORDINATION
摘要
An electrical switching apparatus (14A;20;22;34;64;1 18;120;142) comprises: a first terminal (40); a second terminal (42); separable contacts (44) electrically connected between the first terminal and the second terminal; an operating mechanism (46) structured to open and close the separable contacts; and an arc fault trip circuit (48) cooperating with the operating mechanism and structured to trip open the separable contacts responsive to an arc fault condition. An inductor (32) is electrically connected in series between the first terminal and the second terminal. A capacitor (30) includes a first lead (50) electrically connected between the inductor and the second terminal, and a second lead (52) electrically connected to a ground or neutral conductor. The inductor and the capacitor are structured to cooperate with a power circuit impedance (56) downstream of the second terminal to form a filter trap circuit (58).
申请公布号
CA2744981(A1)
申请公布日期
2010.06.24
申请号
CA20092744981
申请日期
2009.12.17
申请人
EATON CORPORATION
发明人
HASTINGS, JEROME K.;ZHOU, XIN;ZUERCHER, JOSEPH C.;SCHOEPF, THOMAS, J.;BEATTY, WILLIAM E., JR.