In response to technology of the French-made 6Y2 locomotive, Zhuzhou Plant made major modification in the design of the 6Y1 locomotive, improving the reliability of the rectifier, traction motors and rheostatic braking system.
32.
Equipment as built included load sensing " Metacone " air suspension, rheostatic braking, hydraulic parking brake, pneumatic camshaft control by GEC and Brush DC motors of type LT117, with each Dm car having four motors.
33.
However, conditions were not always ideal, and the substations were not really designed to cope with regeneration, which meant that often the train switched to rheostatic braking, where the power was dissipated in a resistance bank.
34.
Chopper regulation allows rheostatic braking ( active above / until, about if also using pneumatic braking ) and the current generated by motors can be sent to the overhead supply line if there are other trains able to absorb it.
35.
Built from aluminium, with all vehicles powered and employing rheostatic braking, the production units were built by BREL York Works with two sets of air-operated doors on the sides of the car and fully automatic Class 315 from 1980 to 1981.
36.
The tracks would be laid on concrete slabs to reduce maintenance expenses, with rubber pads under the rails to reduce noise . ( Welded track might be a possibility too . ) The trains would incorporate full rheostatic braking in addition to the normal air brakes.
37.
313s have rheostatic braking ( which was disabled on London Overground ) in addition to conventional three-step air-operated disc braking; during braking if wheelslide is detected by the WSP ( WheelSlide Protection ) rheostatic braking is disabled and disc-braking comes into effect.
38.
313s have rheostatic braking ( which was disabled on London Overground ) in addition to conventional three-step air-operated disc braking; during braking if wheelslide is detected by the WSP ( WheelSlide Protection ) rheostatic braking is disabled and disc-braking comes into effect.
39.
Both traction and electric braking power are continuously variable, with the electric braking optimised to such an extent that maximum use will be made of the regenerative braking capacity of the network, with the ability to automatically change over to rheostatic braking whenever the overhead supply system becomes non-receptive.
40.
This included the installation of Hitachi micro-processor controls with improved rheostatic brakes, auxiliary inverters designed and built by Fuji Electric, Thelma and Cutler-Hammer rheostat grids, fans by Donkin Fans in Port Elizabeth, and conversion from double-cab to single-cab, since the no . 2 end cab space was required for some of the new equipment which was installed.
