Distribution Substation Equipment Manufacturers – Complete Package Supply
Subian Electric manufactures the complete equipment set for distribution substations – transformers, switchgear, ring main units, LV panels and protection – from its 50,000-square-metre factory in Xuzhou, Jiangsu, China. Subian’s 350+ employees have served utilities and EPC contractors in 50+ countries since 2019.
As a factory-direct manufacturer and supplier, Subian provides integrated substation packages with factory testing, custom engineering and complete documentation.
Send your single-line diagram and site conditions. Subian’s export team will respond with a package quotation and drawings.
Distribution Substation Equipment Manufactured by Subian
Transformers, HV switchgear, ring main units, LV panels and prefabricated substations – integrated as complete distribution substation packages with factory testing.
What Equipment Goes Into a Distribution Substation?
A distribution substation takes incoming medium voltage power and distributes it at lower voltage through transformers, switchgear, protection and metering. Getting all the equipment from one manufacturer removes interface risk and simplifies approval.
The core equipment set – transformer, HV switchgear, protection, LV switchgear and earthing – must work together. A factory that builds and tests the package as one system delivers faster commissioning and a single point of accountability.
What Buyers Check Before Ordering
- Complete equipment set – transformer, switchgear, RMU, LV panel and protection.
- Package testing – integrated factory testing before delivery.
- 6-132 kV class – substation equipment for distribution networks.
- 50,000m² factory – in-house manufacturing of the full package.
- 350+ employees – engineering, quality and export teams.
- OEM / ODM & wholesale – custom branding, packaging and volume supply.
Main Types of Distribution Substation Equipment
Subian manufactures three equipment groups:
Transformers
Configuration
Oil-immersed and dry-type units from 30 kVA to 63000 kVA.
IEC / project specification
Switchgear & RMU
MV ring
KYN28A-12 switchgear and XGN15-12 / HXGN15-12 ring main units.
RMU / 630 A / 20 kA 3 s
LV panels & packages
Configuration
GGD / GCS / MNS low voltage panels and complete prefabricated substations.
IEC / project specification
Distribution Substation Equipment Specifications
| Parameter | Specification |
|---|---|
| Voltage | 6 kV – 132 kV class |
| Transformer capacity | 30 kVA – 63000 kVA |
| Switchgear | 12 kV RMU / withdrawable |
| LV panel | GGD / GCS / MNS |
| Frequency | 50/60 Hz |
| Standard | IEC 60076 / IEC 62271 / GB 3906 |
How to Compare Distribution Substation Equipment 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 Distribution Substation Equipment
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.
Substation Equipment Manufacturing: One Factory, One Package
From transformer winding to switchgear assembly and LV integration – the complete 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.
Learn More →
Quality & Testing Center
Routine inspection on every unit before delivery, with type test reports supporting project approval and market certification.
Learn More →
Materials & Components
Core materials, windings and components are checked against the approved bill of materials on every production run.
Learn More →
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 Substation Equipment Supply
Utilities and EPC contractors can brand or resell package 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
Complete Package vs Equipment From Multiple Suppliers
Buying substation equipment from several vendors spreads coordination risk – interface mismatches, divided responsibility and slower commissioning. A single manufacturer tests the package as one system.
For utilities and EPC buyers, package supply from one accountable factory usually wins on project risk and speed.
Choosing a Distribution Substation Equipment Manufacturer
Evaluate the manufacturer on package scope, test evidence and reference projects. A supplier that builds transformer and switchgear in-house can guarantee interfaces.
Subian Electric offers a 50,000m² factory, 350+ employees, ISO9001, CE and UL certification and export to 50+ countries with full package capability.
Send your single-line diagram – Subian will respond with a package quotation and drawings.
Certifications & Quality Assurance
Subian’s substation 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
Distribution Substation Equipment FAQ
Common questions about distribution substation equipment and package sourcing.
What equipment is included in a distribution substation package?
Can you supply a prefabricated substation instead of loose equipment?
What standards do you build to?
What is the difference between a conventional and a prefabricated substation?
What is the minimum order quantity?
What are your delivery terms?
How long does a Distribution Substation Equipment 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.