KBS Maritime Ltd · Contracts Finder

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Tender: Design, Supply and Installation of 5 MVA 11 kV 50 Hz to 6.6 kV 60 Hz Rotary Frequency Converter

Released 5 months ago

Closed10 Jul 2026

Est. valueEstimate£50K to £650K

LocationUnited Kingdom

AgencyKBS Maritime Ltd

SourceContracts Finder

CategoryManufacturing & Industrial

Submissions closedClosed Fri, 10 July 2026

About

Rotating machine manufacturer needed to design, build and install a 5 MVA 11 kV 50 Hz to 6.6 kV 60 Hz rotary frequency converter. Both machines shall be synchronous with a mechanical coupling joining the 10-pole motor to the 12-pole generator. The generator stator must be physically rotatable to enable manipulation of phase and load angle via a racking motor or actuator. The machine shall include a starting reactor and contactor connected to the motor neutral to limit inrush current on startup to approximately 400 A. Control of the machine starting reactor and racking equipment will be provided by an external control system and is not part of the machine supply.

Insight

This could be ideal for rotating machine manufacturers or electrical engineering firms experienced in large synchronous frequency converters. Key considerations include providing the mechanically rotatable generator stator and racking mechanism, meeting the ~400 A startup inrush limit with a neutral-connected starting reactor and contactor, and ensuring clear interfaces with an external control system that is out of scope.

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2 new manufacturing and industrial tenders

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