Ring Main Unit vs Metal-Clad Switchgear (KYN28): Choosing MV Switchgear for a Distribution Substation
Compare RMUs and metal-clad KYN28 switchgear on IEC 62271-200 classes, fault levels, extensibility, protection and cost.
· 9 min readHV & LV Switchgear
This SF6 gas-insulated ring main unit packs medium-voltage ring-network switching into a compact, metal-enclosed cabinet for power transmission and…
| Parameter | Value |
|---|---|
| Product Type | SF6 Gas-Insulated Ring Main Unit (RMU) |
| Rated Voltage | 12 kV / 24 kV |
| Rated Current | 630 A / 1600 A / 2500 A |
| Frequency | 50 / 60 Hz |
| Protection Level | IP30 / IP32 / IP40 / IP65 / IP66 |
| Material | Aluminium-Zinc Coated Steel Plate |
| Application | Electric Power Transmission |
| Certification | ISO9001, Test Report |
These figures reflect the product data supplied to us. Final dimensions, materials, colors, and packaging depend on the sample and order that get confirmed.
Designed and tested to ISO9001, Test Report. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001; the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity. Every unit passes routine factory tests before dispatch.
This SF6 gas-insulated ring main unit packs medium-voltage ring-network switching into a compact, metal-enclosed cabinet for power transmission and distribution. Covering 12kV to 24kV at 630A to 2500A, with an aluminium-zinc coated steel enclosure and protection level configurable to project needs, it keeps ring-network switching sealed, safe, and dependable.
Fits indoor ring-network distribution rooms, switching stations, and medium-voltage power transmission and distribution systems operating at 12kV–24kV.
Protection level (IP30 through IP66), voltage/current rating arrangement, and circuit scheme can be tailored to the project.
Before ordering, please confirm the rated voltage, rated current, protection level, and circuit configuration required.
SF6 gas insulation keeps the unit compact and fully sealed; Rated 12kV / 24kV across 630A, 1600A, and 2500A options; Metal-enclosed ring-network cabinets with a clear mimic diagram.
Protection level (IP30 through IP66), voltage/current rating arrangement, and circuit scheme can be tailored to the project.
Designed and tested to ISO9001, Test Report. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001, and the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity.
Quotation
Tell us the rating, voltages, frequency, quantity and destination. An engineer replies with a technical proposal, usually within one working day.