This allows the contact line to be fed with power for normal rail operations or bonded to a safe potential to allow maintenance teams to work safely on or near the line.
There are many hazards associated with traditional short-circuiting methods, including working in close proximity to conductors with a hazardous voltage or working close to train movements. The standard EN 50488:2021 (“Railway applications — Fixed installations — Electrical protective measures for working on or near an overhead contact line system and/or its associated return circuit”) includes five steps to providing an isolation: disconnecting the supply, securing against reconnection, verifying the absence of operating voltage, carrying out our earthing or short-circuiting and providing protection against adjacent hazardous voltages.
Improve Safety and Maintenance Efficiency
The most significant advantage of PowerBond is that it can be used to improve safety and maintenance efficiency on the railway and so aid compliance with the requirements of EN 50488:2021. Electrical isolations may be initiated at the traction power control center, reducing the number of people who need to go to specific substations or trackside locations to perform switching and strapping duties. Options are available to interface with systems to provide remote securing to assure safe isolations are maintained.