The pantograph shall be capable of sustained operation over the full range of contact wire
height, the full range of overhead line voltage, and all operating speeds specified. Pantograph
controls shall be configured in the cab car such that any one or all pantographs can be raised
or lowered. When all pantographs are raised, there shall be a time delay function such that the
instantaneous line current demand peak and inrush current characteristic are reduced to less
than the operating limit of the traction power and overhead line system.