RFI 24 kV Ring Main Units (RMU)

This request for information is intended for investigating: * The availability of SF6-free Ring Main Units (RMUs) to be implemented in the Stedin distribution grid. * The feasibility of Stedin requirements that are currently under construction. The RMUs must have a rated voltage of 24kV, rated busbar current of 630A and able to resist 20kA/1 short-circuit current. All RMUs are composed from a combination of Load Break Switch feeders and Circuit Breaker feeders. Fuse feeders are out of scope. The RMUs are intended to be used as: * Standard 3 panel configurations in ring topology with self-powered protection relay. - 630/1000kVA distribution stations. - ≤1750kVA client connections with metering. * Standard configurations with protection relay requiring auxiliary voltage. - 3-panel for client connections 1.75-10.00MVA with metering. - 6-panel configurations. * Freely-configurable single …

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