Bombela Gautrain Project

SCT was awarded the contract for full electrics on the five Sandton-based cranes for the Bombela Gautrain Project. The cranes are employed in a high-speed tunnelling process, and as such, are classified under the Mines and Works Act. Some shafts are 70 m deep, and the rated hoist speed of 55 m/min can be doubled with field weakening operation. The contract is for full control, installation and commissioning of the following machines:

• 40t Sandton South
• 10t Sandton South
• 30t Park Station
• 30t E5 Shaft
• 40t Mushroom Park

The 30 and 40t cranes have powerful hoists (2 ´ 220 kW), with Ansaldo GT3000 frequency controllers operating on a master follower mode. The systems are PLC controlled. They feature automatic positioning and have wireless communication from the shaft bottom (UG station) by Bluetooth technology. The contract on SCT is valued at R 6.5 M.