28-09-2014, 08:51 PM
While it is quite normal to start the operation of points likely to be called a the same time in order to stagger the inrush current at the start of the move, this is unlikely to extend to the individual A and B end of crossovers.
There will have been older interlocking practice that had "point to point" locking so a certain end does not become unlocked until a related end is detected in the relevant position. This is not related to the power demand.
We are only talking about a delay of less than a second and is normally achieved by careful selection of the TFM address so they are at different positions in the SSI cycle time so you would not expect to see a significant impact on the total operation time.
Peter
There will have been older interlocking practice that had "point to point" locking so a certain end does not become unlocked until a related end is detected in the relevant position. This is not related to the power demand.
We are only talking about a delay of less than a second and is normally achieved by careful selection of the TFM address so they are at different positions in the SSI cycle time so you would not expect to see a significant impact on the total operation time.
Peter