A number of feeder messenger catenary systems are now adopted in Japan to integrate the functions of contact wires and messengers for labor-saving in maintenance and other purposes. Although these structures have fewer parts, they require the same management as before to prevent breaking of contact wires. Therefore, we developed a feeder messenger catenary system with an auxiliary wire," which has a structure with fewer parts to prevent the contact wire from breaking. We analyzed the current collecting characteristics of this catenary system by simulation. Consequently, we were able to check these characteristics up to 150km/h by running tests to use a real pantograph and verified the possibility of its utilization.

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