Environmentally friendly medium-voltage energy distribution

The new F-gas-free Clean Air Ring Main Unit 8DJH 24 extends the Siemens blue GIS portfolio to 24 kV level and has integrated sensors and communications interfaces to higher-level automation and the Internet of Things (IoT) systems.

The new F-gas-free 24 kV ring main unit 8DJH 24 has been in use since fall 2020 in a local substation in the Oberallgäu region of Germany as part of a development cooperation with German distribution grid operator Netze BW.

The NXPLUS C 24 is the third medium-voltage switchgear from the Siemens blue GIS portfolio and the first with a rated voltage up to 24 kV (left). A ring-main unit (RMU) with the same rated voltage will join the blue GIS family as the next new member (right).

The F-gas-free Clean Air switchgear NXPLUS C 24  extends the Siemens blue GIS portfolio to 24 kV level and has integrated sensors and communications interfaces to higher-level automation and the Internet of Things (IoT) systems.

The picture shows the SF6-free medium-voltage switchgear 8DJH 12.

The picture shows the 8DAB 12 medium-voltage switchgear.

An innovative load-break switch equipped with a special vacuum interrupter is the new centerpiece for F-gas-free medium-voltage applications in secondary distribution grids from 12 to 24 kV.

The new load-break switch is a true three-position switch. The proven principal of the switch-off, disconnect and earthing functions used in SF6 load-break switchgear is continued.