Press Release Mali Project For JB Switchgear


Somisy Syama Gold mine is located in Mali, West Africa, and is owned by Resolute Mining Australia, whose definitive feasibility study extends to the life of the mine until 2028, which then led to the underground development project.

Howden South Africa, in conjunction with Howden Australia were awarded a contract to increase the underground ventilation of the mine.

Following a tender process JB Switchgear Solutions (JBSS) were appointed by Howden South Africa to provide a complete skid-mounted containerised underground substation to power two new 750kW fans. What makes this substation unique was the requirement for a specially modified 8 metre container to optimize space in the underground location, as well as the fact that the two 750kW fans are powered by variable speed drives (VSD’s) which are fitted inside the container. JB Switchgear integrated the motor control centre and the VSD’s in a single panel of uniform depth and height without duplication of equipment. The variable speed drives produce around 30kW of heat inside the container, and to overcome this excessive heat load, JB Switchgear designed a ducting system incorporating maintenance-free spin filters with roof exhausts to eject the main VSD heat losses directly out of the container. The balance of heat losses inside the container are kept under control by a 32,000 BTU air conditioner.

JB Switchgear successfully completed the project on time, within budget, and to the full satisfaction of the customer.

Contact: Johan Basson +27 11 027 5804 / +27 82 852 6401 |

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