专利名称：Protective device and system
发明人：John C. Opfer,Henry W. Kowalyshen,Joseph
P. Moninski,Arno J. Tapani
申请号：US09793786申请日：20010226
公开号：US20020021540A1公开日：20020221
专利附图：
摘要：A multi-pole protective device and system for electrical power transmission anddistribution systems is provided that operates a multi-pole tripping system at groundlevel from a line-potential tripping device contained within each pole of the multi-pole
system. The system includes multiple pole-unit assemblies each of which is responsive tosensed overcurrents to provide a tripping signal. Each of the pole-unit assemblies istotally self-contained and generates a tripping signal in response to overcurrent
conditions to operate a ground-potential operating mechanism. In one arrangement, thepole units each include an internal line-potential tripping arrangement that
communicates a trip signal to a ground-potential operating mechanism of the pole unitand associated pole units of the protective device arrangement. Each pole unit alsoincludes an interrupter operated by the ground-potential operating mechanism to openthe interrupter. In such an arrangement, the pole units are mechanically independent ofeach other providing flexibility of location and ease of installation. Thus, the onlyinterconnections between the pole units is the communication of the trip signal viaelectrical lines or the like. In a preferred arrangement, the line-potential tripping
arrangement includes an insulated member that is moved to transmit the trip signal fromline potential to ground potential. Also in a preferred arrangement, the movement of theinsulated member generates a trip signal to operate the operating mechanism of thepole unit and associated pole units. In an alternate arrangement, the movement of theinsulated member controls an electrical circuit to provide tripping signals to the poleunits. In a particular arrangement, the operating mechanism of each pole unit is
individually recharged manually via a tool affixed to a hot stick or the like. The rechargingof the operating mechanism of each pole unit functions to close the interrupter thereof.In a particular arrangement, the line-potential tripping arrangement of the pole unit isalso reset during the recharging so as to be ready for tripping and operating the poleunit.
申请人：OPFER JOHN C.,KOWALYSHEN HENRY W.,MONINSKI JOSEPH P.,TAPANIARNO J.
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