28th January 2026 – Mitie engaged Electropak to assess, repair, and refurbish a Square D 3000A joint pack and two busbar sections originally manufactured in the 1970s. The equipment formed part of the electrical distribution system within a major office building in London, UK.
The assets had suffered a short-circuit fault within the joint pack, resulting in fire damage to the internal insulators, partial melting of several busbar conductors, and perforation of the aluminium trunking.
Electropak carried out a full disassembly of the busbar system, separating the conductors from the trunking. Damaged sections of the copper busbars were removed and replaced with newly welded copper sections. The refurbished busbars were then re-plated and re-insulated in accordance with the original manufacturer’s specifications.
The joint pack was dismantled, with all damaged insulators and contact plating replaced to restore full operational integrity.
Repairs to the aluminium trunking were completed by welding in new sections, followed by full surface preparation and repainting.
Upon completion, the system was reassembled using new fasteners throughout.
Comprehensive testing was then undertaken, including continuity checks and dielectric strength (insulation resistance) testing. All test results were documented within a formal report and issued to the client for verification and records.
Electropak Precision Engineering is a subsidiary of UKC Group, a leading provider of obsolescence and engineering solutions for defence and commercial industries.
UKC Group specialises in solving through-life support, obsolescence, and supply chain challenges, extending the service life of critical equipment and platforms. By offering a wide range of electronic and mechanical engineering capabilities, UKC Group companies provide a comprehensive problem solving solution to obsolescence challenges:
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