Moyle Interconnector Circuit Breaker Replacement Programme
Reference ocds-h6vhtk-07b7b5 · MOYLE INTERCONNECTOR LIMITED
Prior notice.
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Amounts and figures
Description
Background Mutual Energy Limited (MEL) owns and operates energy infrastructure for the long-term benefit of energy consumers in Northern Ireland. Moyle Interconnector Limited (MIL) owns the 500MW High Voltage Direct Current (HVDC) Moyle Interconnector, commissioned in 2001, linking Northern Ireland and Scotland. It is a vital asset for Northern Ireland's electricity grid and provides support to Great Britain when required The Moyle Interconnector has seventeen 275 kV circuit breakers across its two converter stations. The existing Siemens 3AQ2-EE circuit breakers were commissioned in 2001 and are approaching the stage at which significant refurbishment or replacement is required. Proposed Requirement The proposed replacement programme is driven by the age, condition and maintenance requirements of the existing circuit breakers, together with the need to address project-specific requirements. The existing Siemens 3AQ2-EE circuit breakers are approaching their major refurbishment stage. The replacement programme also provides an opportunity to improve controlled energisation performance for the converter transformers through addition of suitable and Point-on-Wave switching capability…
Official publications
| Medium | Reference | Date |
|---|---|---|
| FTS | 106285-2026 | 9 November 2026 |
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