Power on for tunnel projects

With its ability to supply fully integrated packages Ampcontrol has recently been selected to supply temporary power distribution and short term hire systems for a number of major tunnelling projects.

These projects include the North-South Bypass Project in Brisbane, the Gold Coast Desalination Project, the Boggo Road Busway in Brisbane, the City West Cable Tunnel in the Sydney CBD and the Northern Sewer Project in Melbourne.

The key application of the short term hire system is to provide power supply to the tunnel boring machines, road headers and associated plant. Tunnel boring machines and road headers are the large pieces of equipment used to excavate tunnels.

The North-South Bypass Project is the motorway being constructed underground between Woolloongabba and Bowen Hills in Brisbane, Australia.

Ampcontrol was selected to supply the equipment due to the reputation, engineering expertise and capabilities of the in-house tunnelling team, its Australian made transformers, protection components and its ability to offer a customised package to the customer.

The package consisted of a 22kV switchroom complete with 630 Amp bustie to allow for full redundancy in conjunction with the isolation transformers which was designed, manufactured and supplied by the Ampcontrol Service division, two 11/22kV 20MVA transformers built by the Transformers team and Ampcontrol’s new IPM relays, specifically designed for hard rock applications, supplied by the Electronics division.

The package also included almost 10,000 metres of 12.7kV/22kV XLPESWA 95mmsq cables complete with pilots and 425 Amp 22KV couplers with connecting pins, around 4,000 metres of 1KV rubber cables and plugs for road head applications as well as approximately 3,000 metres of 11kV XPLESWA 50mmsq distribution cables complete with 800 Amp couplers and connecting pins.

Also, task specific substation, transformer and cable packages are being supplied by Ampcontrol’s Cable and Service companies. This project is an example of the versatility and extensive product range that the Ampcontrol Group of Companies can provide.

Utilising the skills and expertise across a diverse field of specialties, Ampcontrol can provide customers with a total package solution.

Ampcontrol’s tunnelling service and capabilities also includes turnkey electrical solutions, HV and LV special purpose switchboards and substations, cable hire, sales and repair, engineering services, integrated protection relays, iMAC conveyor monitoring and control systems, specialised transformer design/manufacture/refurbishment and gas detection/monitoring.


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