Uninterruptible Power Supplies (UPS) | Gresham

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+44 (0)1722 413 060


Instant battery support for critical functions if the main power is lost. Emergency power cuts in with no interruption and is available typically for up to 30 minutes.

We supply UPS equipment up to 60kVA for the Type 26 Frigates, the Type 45 Destroyer, MARS tanker support vessel ant the QE Class Aircraft Carriers.

As required for naval applications the UPS meet the necessary ruggedness requirement in term of shock and vibration and also meet naval EMC requirements.


  • Circuit Design and PCB Layout
  • Battery & charger technology
  • Marine / Naval power systems
  • Solid-works 3D CAD
  • Theoretical Shock Analysis
  • Full Shock, Vibration & Environmental Testing
  • EMC Compliance / Testing – Def Stan/MIL-STD
  • Ingress Protection IP23/44/54
  • Lloyds Register – Naval Vessels Lloyd's Register


  • ILS Packages
  • User Manuals
  • Installation Documents
  • Work Instructions
  • Maintenance

We can provide a wide range of technical documentation to meet the customers’ requirements, in a variety of formats.

Packages can range from a simple Operating and Maintenance Manual to a full technical package including ILS data.