What is Siemens RMU?
Siemens Smart Infrastructure has introduced the 8DJH 24 switchgear, a ring main unit (RMU) for line voltages up to 24 kilovolts (kV), completely free of fluorinated gases. This new technological development from Siemens eliminates SF6 as an insulating medium, as well as any gas mixture based on fluorine (F-gases).
What is a RMU switchgear?
In an electrical power distribution system, a ring main unit (RMU) is a factory assembled, metal enclosed set of switchgear used at the load connection points of a ring-type distribution network. This type of switchgear is used for medium-voltage power distribution, from 7200 volts to about 36000 volts.
Where are switchgears used?
The switchgear system is directly linked to the supply system. It is placed in both the high and low voltage side of the power transformer. It is used for de-energizing the equipment for testing and maintenance and for clearing the fault.
Which is the ring main unit of Siemens?
Siemens Smart Infrastructure has introduced the 8DJH 24 switchgear, a ring main unit (RMU) for line voltages up to 24 kilovolts (kV), completely free of fluorinated gases.
Where is sf6-free medium voltage switchgear used?
The switchgear is used in public and industrial power grids on the secondary distribution level. The picture shows the SF6-free medium-voltage switchgear 8DJH 12.
Which is the new F-gas-free ring main unit?
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. “We set new standards by offering a completely fluorine gas free ring cable switchgear for voltages up to 24 kV.
How does the 8djh 12 Siemens switchgear work?
With the 8DJH 12 Siemens is also responding to new market requirements: The gas contained in the switchgear consists only of the natural constituents of ambient air and insulates the current-carrying conductors inside the housing. The use of “Clean Air” makes the switchgear easy to handle throughout its entire lifecycle.