EVOSYS delivers comprehensive Secondary Electrical Services to ensure the resilience, intelligence, and operational continuity of your high-voltage infrastructure. We provide a fully coordinated package of low-voltage (LV) systems, protection, and automation—aligned with UK DNO and National Grid standards—to transform traditional substations into responsive, future-ready networks.

Advanced Protection & Control Engineering

We specialize in the development of sophisticated Control Logic and intricate secondary circuits for the seamless operation of primary equipment. Our engineering team excels in:

  • Protection Schemes: Design of high-performance relay logic for rapid isolation of overcurrent, differential, and distance-based faults.
  • Secondary Design: Detailed AC/DC schematics, wiring diagrams, and relay I/O allocation for EHV, HV, and MV sites.

Bespoke Panel Design & Manufacturing

EVOSYS provides end-to-end solutions for the design, build, and factory testing of specialized substation panels. We ensure all enclosures are utility-approved and engineered for durability in substation environments:

  • P&C Panels: Integration of protection, control, and automation devices into high-quality suites.
  • Automation & SCADA Panels: Custom-built racks for RTUs, Gateways, and Telecom equipment with managed cable containment.
  • Marshalling & Distribution: Design of AC/DC distribution boards and marshalling kiosks featuring clear labeling and logical terminal arrangements for simplified site maintenance.

Precision Metering & Instrumentation

We provide high-accuracy Metering and Instrumentation to deliver total transparency across your power network. We engineer sophisticated schemes for precise energy measurement and real-time monitoring of voltage, current, and frequency. Our solutions ensure data integrity for billing, regulatory compliance, and actionable grid intelligence.

Resilient AC/DC Auxiliary Systems

We engineer the fail-safe backbone required for mission-critical substation functions:

  • DC Systems: Bespoke design of Battery Systems and high-performance chargers to support tripping, closing, and telecommunications.
  • AC Distribution: Installation of substation distribution boards (DBs) with essential/non-essential load segregation and discrimination studies.
  • UPS Solutions: Uninterruptible Power Supplies that guarantee the vital link between system availability and grid reliability.

Testing, Commissioning & Documentation

Every installation is backed by a rigorous testing regime, including insulation resistance, earth fault loop impedance, and RCD functional tests. We provide a complete handover pack with as-built documentation, standard test sheets, and O&M manuals to ensure full compliance with utility asset management systems.