Alstom has installed five HYpact compact switchgear modules for indoor application at the LzK substation in the German city of Leipzig.

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The HYpact modules, which were originally designed for outdoor use, replaced the existing air-insulated 110kV technology which was there at the station since 1984.

Alstom distributed the HYpact modules throughout the first floor of the Leipzig substation. The company assembled them in two phases to make sure that the facility continues its operations, while the work is in progress.

First three modules were installed in December last year while the remaining two modules were installed in June.

The required minimum gaps between the modules can be maintained with the help of hybrid concept.

Alstom said its HYpact module is compact in structure and can save space by about 50% when compared to conventional open-air technology.

All switching units are integrated within the module and situated in an enclosed gas-filled space, helping to reduce maintenance costs.

Netz Leipzig general manager Andreas K├╝hnl said: "The HYpact concept of Alstom convinced us. The compact switchgear in its indoor application is ideal in tight conditions. Despite the difficult mounting, the remaining modules could be set-up and commissioned according to the agreement."


Image: The HYpact modules were distributed across the first floor of the Leipzig substation. Photo: courtesy of ALSTOM.