Fundamentals

Voltage control relays, tapchanger services and LV network control for UK electricity distribution network operators

Chester, United KingdomFounded 1994fundamentals.techWebsite technologies

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Highlights

  • New on EvolcAdded 2026-10-27

About Fundamentals

Fundamentals makes voltage control products and services for electricity networks. Its core product is the SuperTAPP family of automatic voltage controllers, which control and monitor on-load tapchangers and are offered as hardware relays or software. It also offers LV network control technology for voltage regulation, phase balancing and energy storage, along with AVC scheme design, settings design, installation, testing and commissioning.

Customers are electricity network operators. Electricity North West chose SuperTAPP SG as the core technology for its CLASS project. The company also supports legacy tapchangers from Ferranti, AEI, English Electric and other manufacturers, with OEM spares, kits, repairs and refurbishment.

Fundamentals was incorporated in 1994 and is headquartered in Chester, UK. Its website describes its origins in 1985 with the TAPP control circuit. Acquisitions include Ferranti Tapchangers Ltd (2017) and SystemCORP Energy (2020). In 2018 it became authorised support for tapchanger products made by AEI, British Thomson Houston, English Electric, GEC, Hackbridge & Hewittic and Metropolitan Vickers, replacing GE Grid Solutions.

Product: SuperTAPP SG automatic voltage controller relays, LV network voltage control, and tapchanger engineering, spares and repair services.

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