Open Cut Substations

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We design and manufacture cutting-edge power distribution equipment, exemplified by our relocatable open-cut substations. These substations have been meticulously engineered with a singular focus: to excel in the demanding and challenging environments of open-cut mining. They stand as the epitome of reliability and adaptability, seamlessly providing the vital energy required to power heavy-duty equipment such as draglines, shovels, and drills, serving diverse mining operations encompassing coal, metalliferous, and sand mining with unparalleled efficiency and precision.

High Voltage Switchgear
The switchgear is positioned on the roof of the switchroom with the operating mechanisms located on the side of the room allowing easy access for personnel. The HV circuit breaker can be mounted on the front or rear of the substation. Surge diverters are mounted on the incoming supply and the load side of the isolator.

Transformers ranging from 2MVA to 30MVA in various combinations of primary and secondary voltages, dependent upon specific needs, can be included with our substations. Our standard Open Cut Substation include earth fault current limitation, provided by continuously rated neutral earthing resistors to the Star point of all secondary windings. Neutral resistor monitoring, and earth leakage relays are installed as standard equipment on each secondary neutral, tripping directly to the main HV circuit breaker.

Our switchrooms are constructed to comply with our customer’s specifications and can be fitted with air-conditioning and fire suppression. The switchroom configuration is adapted to suit the circuit breakers, protection relays, and other requirements specified by the customer. External remote controls are installed to give added security and controlled access to the equipment inside, allowing for safe operation. Medium voltage outlets with bolted adaptors are located at a workable height; alternate cable boxes may be installed on customer requirement. Viewing windows are provided for safe inspection of the MV equipment.

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