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    ContractsReplacement Three-Phase AC Power Supply System for ISIS Neutron and Muon Source
    Open tender

    Replacement Three-Phase AC Power Supply System for ISIS Neutron and Muon Source

    Contract value
    £3m
    Published 16 Jun 2026

    UKRI seeks a 1200 kVA three-phase AC magnet power supply system with precision current regulation and variable voltage output for the ISIS Neutron and Muon Source Facility.

    🇬🇧United Kingdom· EnglandPublished 16 Jun 2026· 2 months agoviaFind a Tender
    Contract value
    £3m
    Published 16 Jun 2026

    Decision brief

    4 fields
    • Contract value
      £3,000,000indicative
      Pounds sterling
    • Closing date
      Rolling
      No closing date published
    • Sector
      Engineering
      Browse related listings
    • Location
      🇬🇧United Kingdom
      England

    Lifecycle

    Open

    Open tender — no closing date published. Opened 2 months ago.

    16 June 2026
    Open tender · no closing date published

    Brief

    The ISIS Neutron and Muon Source Facility, part of UKRI's Science and Technology Facilities Council, invites suppliers to tender for a replacement three-phase Alternating Current (AC) Magnet Power Supply System. This 1200 kVA modular system is designed to compensate for losses in a resonant magnet circuit and must include an advanced control system capable of regulating magnet load current to a specified setpoint with high stability. The power supply will receive load current measurement signals via a DCCT (Direct Current Current Transformer) providing -10/+10 V output representative of the load circuit current. Key technical specifications include: three-phase variable voltage output ranging from 0 V to 250 V line-neutral with ±50 mV accuracy, input from a nominal 400 Vrms AC three-phase 50 Hz supply, intrinsic safety by design, high efficiency and reliability, and full compliance with relevant industry standards. The system must demonstrate high maintainability, be intrinsically safe, and carry appropriate certification marks. Interested suppliers should have expertise in high-power AC supply systems, magnet circuit applications, and precision current regulation.

    Track record

    9 awards · 9 winners
    Open field

    No single supplier dominates the field.

    In engineering, UK Research & Innovation (UKRI) has awarded 9 contracts to 9 suppliers.

    Who wins here
    1. Danfysik A/S1× · 11%
    2. Prior Power Solutions Ltd1× · 11%
    3. PI UK Ltd1× · 11%
    4. Kongsberg Maritime AS1× · 11%
    5. System Five Services Ltd1× · 11%
    6. SKF Magnetic Bearings1× · 11%

    +3 more suppliers

    Across engineering, the most active winners are BRODOMERKUR ENERGETIKA d.o.o., DRIBO, spol. s r.o., SUNBELT RENTALS LIMITED — the field to beat, or your route in as a partner.

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    Take action
    View tender on sourceFind a Tender

    Full notice and submission process on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-06b5f2
    UR
    Buyer
    UK Research & Innovation (UKRI)
    Sector
    Engineering