Signalling Works Testing Handbook: HPSS Signalling Works Testing Specification
|Publication Date:||3 March 2018|
This test specification is formed of the following sections, which correlate to the competency levels identified in NR/L2/SIG/30014/B410
2. Wire Count and Continuity
3. Mechanical Set Up (Mech SU)
4. Function Test.
General definitions of terms are given in NR/L2/SIG/30014/E110
HPSS is the High Performance Switch System, comprising the HPSA point machine and the PowerLink Backdrive. HPSA is the High Performance Switch Actuator, and is always installed at the Bearer 1 position. PowerLink Backdrive is a supplementary drive system that comprises hollow bearers, stretcher bars (plain and driven), bearing blocks, and a torque tube