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 readCompact & Box-Type Substations
This European-style power box substation spans a broad 50–3150 kVA capacity band (200 kVA being the common selection) at a 35 kV rating. A single ventilated…
| Parameter | Value |
|---|---|
| Type | Power Box / Container Substation |
| Capacity Range | 50 – 3150 kVA (200 kVA typical) |
| Rated Voltage | 35 kV |
| Phase | Three Phase |
| Frequency | 50 / 60 Hz |
| Winding Material | Copper / Aluminium |
| Vector Group | Dyn11 / Yyn0 |
| Standard | IEC / GB |
| Certification | ISO9001 |
| Warranty | 2 Years |
| Packaging | Wooden Case |
Designed and tested to IEC / GB. 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 European-style power box substation spans a broad 50–3150 kVA capacity band (200 kVA being the common selection) at a 35 kV rating. A single ventilated steel enclosure combines the high-voltage compartment, transformer compartment and low-voltage compartment, giving buyers container-style, fully integrated substation functionality suited to outdoor distribution work.
Well suited to industrial parks, residential and commercial developments, municipal power distribution, and medium-voltage utility grids.
On request, we can adjust enclosure colour, capacity rating, voltage ratio, winding material (copper or aluminium), and internal compartment layout.
Every unit is manufactured to order against the specification the customer confirms. When enquiring, please share the required capacity, voltage ratio, and any site-specific conditions.
The product photos shown are illustrative marketing renders; the unit actually shipped is manufactured to the specification confirmed at order.
Broad 50 kVA–3150 kVA capacity span to fit different load profiles; 35 kV rating for medium-voltage feeder work; Three-room internal layout separating HV, transformer, and LV sections.
On request, we can adjust enclosure colour, capacity rating, voltage ratio, winding material (copper or aluminium), and internal compartment layout.
Designed and tested to IEC / GB. 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.