This document applies to switches and crossings with movable parts including
- system principles and requirements
- actuation (drive) force
- retaining (holding/locking) force, facing, trailing and run-through/trailability
- assurance of maximum permitted gap between stock and switch or vee and wing along closure length
- temperature effects
- static and dynamic testing
- insulation
- consideration of coupled and uncoupled switches.
Registration number (WIID)
38033
Scope
This document applies to switches and crossings with movable parts including
- system principles and requirements
- actuation (drive) force
- retaining (holding/locking) force, facing, trailing and run-through/trailability
- assurance of maximum permitted gap between stock and switch or vee and wing along closure length
- temperature effects
- static and dynamic testing
- insulation
- consideration of coupled and uncoupled switches.
