We have used variety of ATDs in OHE: Winch, 3 Pulley( Pulley ration 1: 3), 5 Pulley

For the sake of SS wire rope, 2 pulley was replaced by 3 pulley design.

Contact wire tension: 1000 Kg

Catenary Wire Tension: 1000 Kg

In tranway Type OHE, Tension: 1250 Kg

Weights suspended: 9 x 40 Kg + 2x 20 Kg = 400 Kg

So 666 Kg weight is suspended. Purpose of equalising plate is to adjust in case of contact wire worn out.

normally we use XYZ value chart , but can do without it also, see how:

At 750 mts: 12.75 mm or 1/2 inch ( contraction or elongation)

say 800 , tension length at 40 deg

1.7x8 = 13.66 mm

13.6 x 5 = 68 mm

1250-68 = 1182 mm = Z

60 x 5 340

Y= 2500-340 = 2160 mm ( chart is not required)

Another option is this:

For the sake of SS wire rope, 2 pulley was replaced by 3 pulley design.

Contact wire tension: 1000 Kg

Catenary Wire Tension: 1000 Kg

In tranway Type OHE, Tension: 1250 Kg

Weights suspended: 9 x 40 Kg + 2x 20 Kg = 400 Kg

So 666 Kg weight is suspended. Purpose of equalising plate is to adjust in case of contact wire worn out.

normally we use XYZ value chart , but can do without it also, see how:

At 750 mts: 12.75 mm or 1/2 inch ( contraction or elongation)

say 800 , tension length at 40 deg

1.7x8 = 13.66 mm

13.6 x 5 = 68 mm

1250-68 = 1182 mm = Z

60 x 5 340

Y= 2500-340 = 2160 mm ( chart is not required)

Another option is this: