Modification in OHE

To increase the operational speed of OHE from existing 140 kmph to 160 kmph, the static & dynamic parameters of OHE like tension in conductors, 237476/2020/O/o PED/TI/RDSO 147 Page 8 of 66 elasticity, push-up, wave propagation velocity, Doppler coefficient, reflection coefficient & amplification coefficient needs to be improved. For this, tension in contact (107 mm2 ) and catenary wire (65 mm2 ) is to be increased from 1000 kgf to 1200kgf. With 1200 kgf tension of contact wire, condemning diameter of contact wire will increase from existing 8.25mm to 8.42mm to achieve minimum factor of safety.