RMU is a compact ring main unit that combines all MV functions, allowing power and protection of transformers on the secondary distribution network. RMU can be supplied in various configurations suitable for most switching applications in 12/17.5/24kV/36kV distribution network.
- Supplier: LS, ABB,Siemens….
- Rated voltage: 12 / 17.5 / 24kV
- Rated frequency: 50Hz
- Rated current: 630A
- Rated Short Timeline: 21kA / 3s
- Power frequency withstand voltage: 42kV
- Lightning impulse withstand voltage: 75kV
- Internal arc resistance class: AFL 21kA/1s
- Applicable standards: IEC 62271-1, 102, 103, 200
- Mode of operation: Trip coil
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