Medium Voltage Power Distribution Manufacturers – MV Distribution Supply
Subian Electric manufactures medium voltage power distribution equipment – switchgear, transformers and ring main units – at its 50,000-square-metre factory in Xuzhou, Jiangsu, China. Subian’s 350+ employees have served utilities in 50+ countries since 2019.
As a factory-direct manufacturer and supplier, Subian provides MV distribution equipment with factory pricing, custom schemes and complete test documentation.
Send your voltage and distribution requirements. Subian’s export team will respond with a quotation and technical proposal.
Medium Voltage Distribution Equipment Manufactured by Subian
KYN28A-12 switchgear, ring main units and distribution transformers from 6 kV to 35 kV – the equipment set for MV distribution networks.
What Is Medium Voltage Power Distribution?
Medium voltage power distribution covers networks from 6 kV to 35 kV that carry power from primary substations to distribution transformers. Its equipment – switchgear, RMUs and transformers – must operate reliably with strict safety requirements.
Utilities, industrial plants and infrastructure rely on MV distribution equipment to move power safely and efficiently across their networks.
What Buyers Check Before Ordering
- Complete MV set – switchgear, RMUs and transformers.
- 6-35 kV class – voltage range for MV distribution.
- Arc-tested switchgear – safety tested per IEC 62271.
- 50,000m² factory – in-house manufacturing of the MV range.
- 350+ employees – engineering, quality and export teams.
- OEM / ODM & wholesale – custom branding, packaging and volume supply.
Main Types of Medium Voltage Distribution Equipment
Subian manufactures three MV equipment groups:
Switchgear
Configuration
KYN28A-12 withdrawable panels for primary distribution.
IEC / project specification
Distribution transformers
Configuration
Oil-immersed and dry-type units for MV-LV conversion.
IEC / project specification
MV Distribution Equipment Specifications
| Parameter | Specification |
|---|---|
| Voltage | 6 kV – 35 kV |
| Switchgear | 12 kV / 24 kV |
| RMU | 12 kV, 630 A |
| Transformers | 30 kVA – 63000 kVA |
| Frequency | 50/60 Hz |
| Standard | IEC 62271 / IEC 60076 |
How to Compare Medium Voltage Power Distribution Suppliers
Quotations for this equipment often look identical on the first page. The difference sits in what is attached behind the number, and in the three or four lines that decide the installed cost rather than the purchase price.
| What to compare | What a thin quotation leaves out | What to ask for |
|---|---|---|
| Scope split | A price for the enclosure only | Who supplies the transformer, RMU, LV board, protection and the civil base |
| Single-line diagram | A catalogue layout | The SLD the package is built to, approved before production |
| Protection philosophy | A fuse only | Relay types, CT ratios, trip matrix and the coordination study |
| Testing | A routine test at the panel | FAT of the complete package, with the witness named |
| Transport | Overall dimensions | Shipping splits, lifting points and maximum transport width |
| Site work | Not included | Commissioning scope, cable terminations and the document handover |
Buyers who compare on price alone usually discover the gap at commissioning. The six lines above are the ones that decide whether the unit or the panel can be energised without site work. OEM and ODM supply is available where the nameplate, manual and packing have to carry a different brand.
Which Standard Applies to Medium Voltage Power Distribution
The purchase specification decides the insulation level, the enclosure test and the nameplate data. These are the standards buyers normally name in the enquiry.
| Standard | What it covers | When it is asked for |
|---|---|---|
| IEC 62271-202 | Prefabricated substations | Compact and skid-mounted packages |
| IEC 60076-1 | Power transformers | The transformer inside the package |
| IEC 62271-200 | MV switchgear | RMU and incoming panels |
| IEC 61439-2 | LV assemblies | The LV distribution board |
| IEEE C57.12.28 | Enclosure integrity and tamper resistance | Public-access sites in North America |
| IEC 60529 | Degrees of protection (IP code) | Outdoor and coastal sites |
Where two standards conflict, the purchase specification wins and the conflict is recorded on the drawing before production. Type test reports are issued against the model, so ask for the report that names the rating you are buying.
MV Distribution Manufacturing at Subian’s 50,000 m² Factory
From switchgear assembly to transformer winding and RMU sealing – the MV equipment set is built and tested at Subian’s Xuzhou facility.
Production Workshop
Controlled winding, core processing and vacuum drying with quality checkpoints between every stage, so quality is built in from the start.
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Quality & Testing Center
Routine inspection on every unit before delivery, with type test reports supporting project approval and market certification.
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Materials & Components
Core materials, windings and components are checked against the approved bill of materials on every production run.
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OEM / ODM / Agency Supply
Custom branding, packaging and configurations for global partners – from nameplate to complete product design – supported by a dedicated export team.
Learn More →OEM/ODM & Wholesale MV Distribution Supply
Utilities and distributors can brand or resell MV equipment with custom nameplates and documentation.
OEM / ODM
Factory-DirectCustom branding, packaging and product variants built on Subian’s standard platforms – from a nameplate to full product design.
Custom nameplate · Custom packaging · Full test docs
Wholesale Supply
Volume PricingFactory pricing with flexible container quantities, mixed models per container and reliable global shipping for volume buyers and importers.
Container MOQ · Mixed models · Global shipping
Distributor Support
Channel PartnersDedicated account management, technical documentation and priority production for distributors and project clients.
Account manager · Sales material · Priority lead times
MV Switchgear vs MV RMU for Distribution
Switchgear provides full breaker protection for primary substations; RMUs offer compact switching for loops and small substations. The choice follows fault level and network position.
Subian manufactures both and confirm the right equipment for your network.
Choosing a Medium Voltage Distribution Manufacturer
Verify arc and breaking test evidence, plus transformer type tests – the safety-critical evidence for MV equipment.
Subian Electric offers a 50,000m² factory, 350+ employees, ISO9001, CE and UL certification and export to 50+ countries.
Send your network requirements – Subian will respond with a quotation and drawings.
Certifications & Quality Assurance
Subian’s MV distribution equipment is produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and type test reports.
Product Certifications
10 kV Dry-Type Transformer Certificate
35 kV Transformer CB Certificate
35 kV Transformer CE Verification
Transformer CE Certificate
Dry-Type Transformer Test Verification
ISO 14001 Environmental Management
ISO 45001 Health & Safety
ISO 9001 Quality Management
110 kV Transformer Type Test Report
UL Certificate of Compliance
Medium Voltage Distribution FAQ
Answers to the questions buyers ask most about medium voltage power distribution equipment.
What is medium voltage distribution?
What equipment do you supply?
What is the difference between switchgear and RMU?
Do you provide type test reports?
What is the minimum order quantity?
What are your delivery terms?
How long does a Medium Voltage Power Distribution project take?
Can the package be supplied to a utility specification?
Contact Subian
Need the Right Specification?
Tell Subian your target market, product type, quantity and technical requirements. Subian’s team will help you identify a suitable configuration for your project.