procurement of 250a copper conductor bar and current collector for 2 x125 mt eot crane for emd-4, stps, sarni. procurement of 250a copper conductor bar and current collector for 2 x125 mt eot crane for emd-4, stps, sarni. , 250a copper conductor bar and current collector for 2 x125 mt eot crane , insulated copper conductor bar - w type, conductor bar system-copper type -wc-250 nominal current ( a ) at 100% duty and 35 oc- 250 dc resistance ( o / km ) at 35 oc- 0.27 impedance -0.30 voltage grade ( v ) - 1000 support spacing ( mm ) - 1125 bar length ( mm ) -4500 minimum pitch center ( mm ) -43 traveling speed ( m / m ) -600 max permissible ambient temperature --35 oc to 55 oc ( standard insulations ) minimum bending radius ( m ) - 1.5 note – 1 meter copper conductor bar is made of set of 4 nos. copper bar of 1 meter ( rybg, 3 phase + 1n ) with pvc sleeve, hanger, anchor clamp, feed point, joint covers and end caps. , current collector for 250a ( cc-250w ) with 1 mtr. cable