Source: https://tendernation.io/opportunities/01a13be1-6436-73ad-8834-53bc3b0f738a/ukri-6064-isp-1157-replacement-of-large-isis-power-supply-system Open for bids GB open procedure Suitable for SMEs # UKRI-6064 ISP-1157 Replacement of Large ISIS Power Supply System [UK Research & Innovation (UKRI)](https://tendernation.io/buyers/uk-research-innovation-ukri) Estimated value £3,000,000 Published 10 Sept 2026 Deadline 35 days left 23 Nov 2026 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender The ISIS Neutron and Muon Source Facility, part of UKRI’s Science and Technology Facilities Council, are looking to procure a replacement three-phase Alternating Current (AC) Magnet Power Supply System to make up the losses in a resonant magnet circuit. The requirement is for a modular 1200 kVA three-phase AC voltage source power supply that includes a control system capable of regulating the designated magnet load current to a given setpoint and to a high level of stability. It is important to emphasise that the magnet load current to be regulated is not the same as the AC power supply output current and the measurement signal for the load current will be provided by the facility in the form of a DCCT with a -10/+10 V signal representative of the load circuit current. The three-phase output shall have a variable voltage output from 0 V to 250 V line-neutral and an output voltage accuracy of ±50 mV. The system shall be fed from a nominal 400 Vrms AC, 3-phase 50 Hz sinusoidal supply, intrinsically safe by design, with high efficiency, high reliability, high maintainability and fully compliant and marked with relevant standards. ## CPV classification Electricity supplies Source Find a Tender (UK) · Notice ocds-h6vhtk-06b5f2-2026-09-10T15:09:49+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-06b5f2-2026-09-10T15:09:49+01:00) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile UK Research & Innovation (UKRI): past awards and live tenders](https://tendernation.io/buyers/uk-research-innovation-ukri) [Sector More Electrical equipment & lighting tenders](https://tendernation.io/sectors/electrical-equipment-lighting) ## More tenders like this [UKRI-5720 Magnetic Bearing Drive systems for ISIS Neutron Disc Choppers · UK Research & Innovation (UKRI) · 14 days left · 2 Nov 2026](https://tendernation.io/opportunities/01a13bea-ef7a-7159-9394-81da83a38c45/ukri-5720-magnetic-bearing-drive-systems-for-isis-neutron-disc-choppers) [UKRI-6365 Benchtop MRI System · UK Research & Innovation (UKRI) · 1 day left · 20 Oct 2026](https://tendernation.io/opportunities/01a13bea-ee34-701d-b7c4-00aa2eaf8b41/ukri-6365-benchtop-mri-system) [33kV Substation SCADA Supply · UK Atomic Energy Authority · 18 days left · 6 Nov 2026](https://tendernation.io/opportunities/01a13be8-1c47-72b8-9fd4-8e3f251a7dc4/33kv-substation-scada-supply) [Laboratory, optical and precision equipments (excl. glasses) – Acquisition d'un module de puissance doté d'un système de commande associé en vue de la mise en place d'une alimentation haute tension · EPFL-Scientific Equipment · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a14063-433f-72ca-aa94-b1779e2a7e06/switzerland-laboratory-optical-and-precision-equipments-excl-glasses-acq)