The 36 kV 8DJH-36 is physically a slightly larger, scaled-up version of the very successful 8DJH RMU. More configuration options have been released for the 36 kV series, most recently a bus section panel. This option provides designers even more possibilities for applications, such as low-cost power distribution systems and switchboards for larger industrial sites.
In comparison to primary 1000 A rated equipment, the 8DJH-36 is a highly cost-effective range which now includes several more predefined, lower cost, single SF6 gas block configurations. These include the versatility to allow future extensions of panels to the left or right-hand side.
The 8DJH-36 is rated 36 kV (20 kA 3 sec) with a bus current rating of 630 A. The range includes:
- Ring switches
- Cable to bus panels
- Transformer fused T-offs
- Circuit breakers
- Air insulated billing/metering panels – arc rated (with option for cable connection left, right or both)
- Bus section
- Ability for VTs to be mounted in the switchgear panel (a special extra panel for V’s is not required)
- Automation for remote control – including earth switches if desired
The 8DJH-36 is being used for outdoor-to-indoor conversion of 33 kV switching stations locally in New Zealand, and for mobile substations. For many of New Zealand’s smaller substations, where a 630 A rating is sufficient, 8DJH-36 offers considerable saving in capital cost compared to traditional primary switchgear.
The outdoor enclosure option provides even more possibilities for the 8DJH-36 to be used in outdoor substation refurbishments. See the Siemens website for further 8DJH-36 information.
Siemens 8DJH-36 Ring Main Unit for 33 kV applications.