Retrofit of Generator Transformer Uk3 in Cologne Substation

Auto-translated from German

Original title: Ertüchtigung (Retrofit) des Generatortransformators Uk3 im Unterwerk Köln

DB Energie GmbH (Bukr 31)

Published: Jun 4, 2026

Updated: Jun 4, 2026

Source: TED - Tenders Electronic Daily (EU)

About This Opportunity

This is a supplies contract in the energy and power and architecture and engineering sectors, with a focus on Transmission Distribution. Located in Germany, Europe, this opportunity is open to firms and consortiums. Proposals must be submitted before July 3, 2026.

Published through TED - Tenders Electronic Daily (EU), a national government procurement portal. Public procurement tenders follow the country's national bidding regulations and may have specific eligibility and documentation requirements for the supply of goods in the energy and power sector. Supply contracts typically require bidders to demonstrate product compliance with technical specifications, delivery capacity, and relevant certifications. Interested parties should review the full documentation on the original source before submitting their proposal.

Description

Original language: German

Die Deutsche Bahn betreibt in mehreren zentralen Umformerwerken frequenzelastische Netzkupplungsumformer bzw. Bahnstromumformer, die das öffentliche dreiphasige 50Hz-Stromnetz der allgemeinen Landesversorgung mit dem einphasigen 16,7Hz-Bahnstromnetz verbinden. Die frequenzelastischen Netzkupplungsumformer bestehen hauptsächlich aus zwei miteinander starr gekoppelten rotierenden elektrischen Maschinen – einem doppeltgespeisten Drehstrom-Asynchronmotor (50Hz) mit einer GTO-Leistungsregelung und einem Einphasen-Synchrongenerator mit Gleichstromerregung. Die Leistung aus dem öffentlichen 50Hz Drehstromnetz wird mittels eines 50Hz-dreiphasen-Transformators von 110kV auf die Betriebsspannung/Maschinenspannung (hier 10,5kV) der Asynchronmaschine herunter und durch einen Einphasen 16,7Hz-einphasen-Transformator auf 110kV hochgespannt. Im Zuge der geplanten Unterwerkserneuerung (16,7 Hz) im Umformerwerk Köln soll der Transformator Uk3 (16,7Hz, 33,3 MVA, ABB) abtransportiert und einer externen Werksrevision unterzogen werden.

Data provenance

This notice is sourced from TED - Tenders Electronic Daily (EU) and was originally published on June 4, 2026. Last refreshed today. Original language: German. BidsFactory mirrors official procurement notices and links back to the source for full legal text.

About DB Energie GmbH (Bukr 31)

DB Energie GmbH (Bukr 31) has issued 34 procurement notices on BidsFactory, including 6 currently open and 17 awarded contracts. Activity concentrates in Energy & Power, Architecture & Engineering Services, and Construction & Civil Works. All notices are published for Germany. Notices are distributed via TED - Tenders Electronic Daily (EU), service.bund.de (Germany), and DÖE Bekanntmachungsservice (Germany). Most recent publication: June 4, 2026.

Frequently asked questions about this tender

How can I submit a bid?

Visit TED - Tenders Electronic Daily (EU) to access the full notice, required documents, and submission instructions provided by the contracting authority.

When does this tender close?

The submission deadline is July 3, 2026. You have 30 days left to prepare and submit your proposal to the contracting authority.

Who is the contracting authority?

This notice was issued by DB Energie GmbH (Bukr 31) in Germany. The authority is responsible for evaluating bids, awarding the contract, and managing performance.

What type of contract is this?

This is a Supplies contract in the Energy & Power sector. The classification helps bidders match the opportunity to their qualifications and registered scope of supply.

Where will the contract be performed?

The contract is for delivery in Germany. Foreign bidders should review local registration, taxation, and any in-country presence requirements before submitting.