scope:

The contents of this Product Specification apply to all Alstom High Voltage Impulse track circuits and shall be read in conjunction with RT/E/S/11752. The following forms of HVI track circuit are included:

• HVI track circuit for d.c. electrified lines,

• HVI track circuit for a.c. or dual electrified lines,

• HVI track circuit for non-electrified lines.

PURPOSE

This Product Specification gives details of best practice in respect of Alstom High Voltage Impulse (HVI) track circuits, in order to achieve the requirements of RT/E/S/11752.