Cover article
Powering Africa’s renewable transition
FEATURES: Industry 4.0 + IIoT Renewable energy + energy management Measurement + instrumentation Safety of plant, equipment + people
A frica is entering a decisive chapter in its energy evolution. Solar PV, wind farms, hybrid systems and battery storage are becoming the backbone of new generation capacity. As renewables penetration accelerates, electrical infrastructure must evolve to withstand the continent’s unique operational and environmental challenges. ArmCoil’s GreenCore Series is engineered to meet these demands. Designed and manufactured in South Africa, GreenCore transformers and reactors deliver reliability, thermal stability and intelligent monitoring tailored specifically for renewable energy duty cycles. Purpose-built for dynamic energy systems Modern renewable plants operate under conditions where conventional grid transformers are often stressed. GreenCore addresses these realities with designs optimised for: - Rapid solar/BESS load swings and fluctuating generation - High-frequency inverter-driven harmonics - Elevated ambient temperatures across African climates - Remote site logistics and maintenance constraints - Remote monitoring in real time. Thermal and electrical performance GreenCore transformers incorporate: - Advanced winding geometries for harmonic resilience - Low-loss magnetic cores for reduced heat and improved effi- ciency - Thermal designs supporting severe cyclic loading - High ambient temperature capability for extended lifespan. These features protect insulation integrity and ensure predictable performance across varying operating scenarios. Smart monitoring for predictive operation The GreenCore Smart Monitoring System transforms each transformer into an intelligent, connected asset. Operators gain access to: - Real-time thermal and electrical data monitoring - Harmonic indicators and load behaviour patterns - Early-stage anomaly detection - Predictive maintenance triggers and alarm management. This level of insight reduces unplanned downtime and improves operational efficiency across remote or multi-site renewable facilities. Sustainable by design Environmental responsibility is embedded in every GreenCore unit: - High-efficiency, low-loss core designs - Optional biodegradable ester fluids for improved fire safety - Reduced lifetime losses and lower operating expenditure. Quality and standards compliance The GreenCore Series is manufactured within a certified framework: - ISO 9001 – Quality management - ISO 14001 – Environmental management - ISO 45001 – Occupational Health & Safety management - ISO 17025 – Test Laboratory Competence. All transformers are tested per IEC 60076 and SANS 780:2021, ensuring full performance verification and traceability.
Where GreenCore excels GreenCore is engineered for the full spectrum of renewable energy applications: - Solar PV step-up transformers - Battery Energy Storage System (BESS) isolation/step-down transformers - Hybrid plant transformers - Reactors for harmonic filtering and grid coupling - Auxiliary and LV/MV service transformers.
Powering Africa’s Renewable Transition
Why choose GreenCore - Renewable-duty engineering designed for Africa’s operating reali- ties - Intelligent monitoring that enhances uptime and asset visibility - High thermal and harmonic resilience for inverter-driven systems - Sustainable materials with reduced environmental impact - Proven ArmCoil quality backed by accredited testing and certifica- tions. Ready for deployment across Africa GreenCore isn’t an adaptation of a standard transformer – it is a renewable-centric design built from the ground up. As South Africa and the African continent advance towards cleaner, decentralised and more reliable power systems, GreenCore provides the infrastructure foundation for the next generation of energy projects. Reliable. Intelligent. Purpose-built. Ready for Africa.
ArmCoil’s GreenCore transformers are engineered specifically to operate with renewable energy systems in the African environment.
For more information contact ArmCoil. Tel: +27 (0)11 763 2351 Visit: www.armcoil.co.za
3 DEC 2025 - JAN 2026 Electricity + Control
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