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Point Machine Health Monitoring

Point Machine Health Monitoring Unit

WHY Remote Condition Monitoring for Point Machine?




  • Availability of point machine is an essential requirement for railway transport

  • Point machine maintenance is routinely undertaken at fixed intervals and point related failures are time-consuming and most expensive disruptions

  • Periodic maintenance is not necessarily adequate

  • Real-time condition monitoring of point machines enables predictive maintenance and eliminates disruptions to rail services



Parameters PTHMU Senses




  • Point machine current

  • Point operating voltage at location and station equipment room

  • Point operating relays

  • Point detection relays

  • Crank handle relays

  • Point detection voltage at station equipment room

  • Point operating voltage at station equipment room

  • Point operating supply leakage – through potential free contact of Earth Leakage Detector

  • Point detection supply leakage – through potential free contact of Earth Leakage Detector



Benefits




Increases availability of point machine.

Meantime to repair is reduced as insight into the failure is provided by a remote condition monitoring system.

Reduces maintenance cost and the repair is done the first time right.

Increases point machine life and safety of time movements.

By understanding the error, the maintenance time will be reduced based on the state of equipment.

Real-time condition monitoring data send to remote area or Control room without going to shut in critical condition.

Based on RCM data the failures will predicted before it occurs.

Equipment is attended by the Technician before it fails.

Maintenance of inventory can be customized on need basis, reducing the cost of unused inventory



Various Failures Detected




Obstruction

Point obstructed between switch and stock rails

Obstruction-icon

Power supply failure

Power Supply not extended to point machine

Power supply-icon

Friction clutch problem

Sufficient force not applied to switch rails due to faulty friction clutch

Friction clutch-icon

Detection failure

Detection could not take place due to External power supply failure

standards-icon

Inadequate Spring

Not able to apply sufficient pressure on the closed switch rail

standards-icon

Carbon brushes worn out

Point machine unable to draw uniform current

Carbon brushes-icon

Point Health Signatures




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