MechChem Africa July-August 2025

⎪ PowerGen,PetroChem and Sustainable energy management ⎪

Hexagon Electrical expands local manufacturing and services Hexagon Electrical has expanded its manufacturing and service capabilities to meet growing demand for customised, high performance specialised electric motors for heavy engineering, hazardous industrial and mining applications.

H exagon Electrical, which is based in Brakpan, Gauteng, special ises in both flameproof and non flameproof equipment, combining mechanical precision, electrical expertise and design innovation to deliver robust, energy efficient certified solutions tailored to exact customer requirements. “Our broad product portfolio comprises motors and transformers, enclosures and switchgear, ventilation fans, scrubber fans and auxiliary equipment, as well as a full range of flameproof equipment compliant with SANS 60079 standards,” explains David Dyce, CEO, Hexagon Electrical. The range of specialised Hexagon motors includes dual kW and dual speed AC motors, slip ring motors, and water-cooled flameproof motors. “Also in our portfolio are flameproof or standard winch and traction motors, as well as standard or flameproof pad mount motors for heavy-duty mining applications,” says Dyce. “All motors are offered with optional cus tomisation in voltage, mounting, shaft con figuration and thermal protection. The company also designs, supplies and services transformers, enclosures, ventilation equipment and auxiliary components for integrated system deployment. “This robust equipment is engineered to ensure high performance and optimum safety in critical applications, including ventilation in hazardous areas, chemical processing, materials handling and in underground mining. “Through in-house design, manufacturing and testing facilities, our highly-skilled team offers a complete service lifecycle, including

traceable calibration records. Hexagon Electrical operates under the leadership of David Dyce, whose technical background and commitment to quality as surance continue to drive the company’s focus on performance, reliability and long-term cus tomer support. As part of Montsi Investments, Hexagon maintains a strategic focus on industri al resilience, supplying both the manufacturing of new products and repair services to sectors where downtime and failure risk carry high operational costs. www.hexelect.co.za

system design, motor rewinding, mechanical refurbishment, electrical testing and final certification.” The company’s recent investment in test infrastructure enables motors to be evaluated at full load up to 460 kW and 6.6 kV. Flameproof inspection is conducted by accredited inspec tors and all products undergo mechanical and electrical assessments before final assembly. A dedicated vacuum pressure impregnation (VPI) system and dual varnishing process ensure quality, durability and performance in extreme operating environments. Hexagon’s facility is equipped with four production bays, each with dedicated lifting capabilities ranging from 5 to 25 t. In-house machining, lamination punching, coil winding and dynamic balancing are all undertaken using modern equipment, including a 460 kW Schenk dynamometer and high-voltage test systems. The manufacturing process is support ed by proprietary design software devel oped in collaboration with the University of Witwatersrand, enabling advanced simulation, stress verification and application-specific winding design. Environmental and safety standards un derpin the company’s operations, which are fully compliant with SABS, SA Flameproof Association, SEIFSA, MASC and ISO technical standards. Motors and control systems are as sembled in accordance with SANS 10242 and inspected against client specifications before dispatch. Each unit is supplied with a full data book, including balancing certificates, electrical test reports, records of the repair history and

Winding of the stator coil of a flameproof water-cooled motor at Hexagon Electrical.

Barring the rotor of a squirrel cage induction motor with copper bars.

Hexagon Electricals’ highly skilled team offers a complete service lifecycle, including system design, motor rewinding, mechanical refurbishment, electrical testing and final certification.

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