Onboard Systems
Onboard Systems
See Also
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Product
Train Protection and Warning System and Automatic Warning System
TPWS and AWS
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The current Network Rail UK protection systems are TPWS and AWS. The functionality of both systems is combined in a single system, generally referred to as TPWS. TPWS comprises of OSS (Overspeed Sensor System) and TSS (Train Stop System).
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Product
Automatic Power Control system
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The Automatic Power Control system cuts the incoming power supply to a traction unit for short periods. This is required where power supplied from one part of a power distribution system in separated from another by a neutral section. Its fitment prevents damage to the power distribution system or the vehicle.
