Prefabricated Substation
Compact substations, distribution transformers and containerised power modules delivered factory-tested, from 800 kVA to 3150 kVA.
Product family
3 product families
Containerised power modules and E-house
Distribution transformers, dry-type and oil-immersed

Prefabricated compact substation
Selection guide
Which board is used where?
Selection depends on where the supply comes from, the current to be carried, the site conditions and whether the installation can be interrupted for maintenance. Final values follow the single-line diagram, selectivity study and short-circuit calculation.
| Family | Location and role | Typical rating | Key equipment |
|---|---|---|---|
| YB prefab substation | Grid renewal, estates, sites, renewable collector duty | 800–1250 kVA; 3150 kVA at 0.69 kV | RMU + transformer + LV board in one shell |
| Distribution transformers | Substation and data-centre transformer rooms | 400–2000 kVA, 10 kV | SCB13 / SCB18 dry-type; S13-M / S22-M oil-immersed |
| Prefab power modules | Modular data halls, generator plant, E-house | Containerised | Factory-tested, quick-plug connection |
Design principles
Standards and design principles
Package engineering
MV switchgear, transformer, LV switchboard and compensation designed as one scheme and tested together.
Enclosure
Honeycomb double-layer composite shells in stainless, aluminium, cold-rolled or colour steel.
Site conditions
Rated for -25 to +40 °C and 2000 m; special versions on request.
Standards
GB/T 17467 and IEC 62271-202 for prefab substations; GB/T 10228 and IEC 60076 for transformers.
Production process
From enquiry to commissioning
Design, production and testing sit under one roof, so responsibility stays at one point from the first drawing to site support.
- Enquiry and analysisSend a single-line diagram, load list or panel schedule. An engineer confirms voltage, short-circuit level, forms of separation and applicable standards within 24 hours.
- Proposal and drawingsBudgetary quotation in five working days, then general-arrangement drawings, busbar sizing and a bill of materials for approval.
- Order and engineeringApproved drawings release procurement of Schneider, ABB or specified components and sheet-metal programming.
- Fabrication and assemblyLaser cutting, CNC bending, powder coating, busbar processing, primary assembly and secondary wiring in Shaoshan.
- Factory acceptance testDielectric, loop-resistance, insulation, earth-continuity, IP and current-injection tests; customers and consultants welcome to witness.
- Delivery and after-salesExport packing, sea or air freight, commissioning support and a 7×24 service line with Schneider-trained engineers.
Let's confirm the right board for your project
Send a single-line diagram, load list or a plain list of requirements. Our engineers set the board type, form of separation and ratings with you.