HIGH-SPEED CONTACT SYSTEM Russian patent published in 2002 - IPC

FIELD: railway transport; contact systems. SUBSTANCE: proposed high-speed contact system consist of carrier cable and spring cable and contact wire connected with said cables by means of droppers. It is furnished additionally with starting sections consisting of lengths including three spans, length of each following span being 20-30% greater than that of previous span. Maximum length of span on starting section is equal to mean length of span outside the starting section, and tension of contact wire and carrier cable on starting section is 1.5-2.0 times greater that tension of wire outside starting section. EFFECT: improved quality of current collection at high running speeds. 2 dwg