System operational · UK tenders
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cb4187fa-1f56-4e0a-802b-38148d143d40 · Contract

Rotary Frequency Converter

KBS Maritime Ltd

Estimated Value

£2,000,000 – £0

Deadline

10 July 2026

Published

8 June 2026

Type

goods

Any regionGBCPV: 31121111 32552420
CategoryElectrical equipment

Overview

We require a rotating machine manufacturer to design, build and install a 5MVA 11kV 50Hz to 6.6kV 60Hz Rotary Frequency Convertor. Both machines shall be synchronous with a mechanical coupling joining the 10-pole motor to the 12-pole generator.

There is a requirement to be able to physically rotate the generator stator to enable manipulation of the phase and load angle via racking motor or actuator. The machine should come complete with a starting reactor and contactor connected to the neutral point of the motor, to limit the inrush current on startup to approximately 400A. Control of the machine starting reactor and racking equipment shall be by an external control system, which shall not form part of the machine scope of supply.

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The UK government needs a specialist company to design, manufacture, and install a custom rotary frequency converter — a large rotating machine that converts electrical power from 50Hz (standard UK frequency) to 60Hz (used in some industrial applications). The machine must handle 5 megavolt-amps of power and convert voltage from 11,000V down to 6,600V, with adjustable components to fine-tune phase and load during operation.

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Buyer Profile

KBS Maritime Ltd
Typepublic body
RegionAny region
Total tenders19
Total spend£11,500,000
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Key Dates

Published

8 June 2026

Submission deadline

10 July 2026

Notice type

Contract

Source

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