Package Substation Transformers
Compact, factory-assembled and tested package substation transformers for utility and industrial distribution. 300 kVA to 5 MVA, up to 72 kV class — designed for rapid deployment with integrated MV/LV switchgear.
Engineering Features
Factory Assembled & Tested
Complete substation assembly tested before dispatch — eliminates site commissioning risks and reduces installation time.
Technical Data
| Parameter | Range / Value |
|---|---|
| Rated Power | 300 kVA – 5 MVA |
| Primary Voltage | Up to 72 kV |
| Secondary Voltage | 230/400 V – 690 V |
| Frequency | 50 / 60 Hz |
| Cooling | ONAN / ONAF |
| Dielectric Fluid | Mineral Oil / Ester Fluid |
| Temperature Rise | 55°C / 65°C |
| Protection Class | IP54 / IP65 |
| Delivery | 18 weeks EXW |
| Standards | IEC 60076 / IEC 62271 |
Standard range parameters — custom specifications available on request.
Related glossary terms
ENATS 35-1
DNO-approved distribution transformer specification
ENATS 35-2
UK secondary substation transformer standard
G99 Compliant
Engineering Recommendation G99 grid interface
BS EN 60076
British Standard for power transformers
KEMA Certified
Independent short-circuit witness testing
EcoDesign Tier 2
EU 548/2014 efficiency compliance
Compact package-substation transformers engineered specifically for UK DNO secondary-distribution programmes. 300 kVA to 5 MVA at 11 kV, 20 kV and 33 kV — ENATS 35-2 type-tested, EcoDesign Tier 2 efficient and dimensioned for plug-and-play integration into UKPN, NIE, SP Energy and Northern Powergrid package-substation enclosures.
UKPN Secondary Substation Refurbishment Programme
NIE Networks Rural Substation Replacement
SP Energy Distribution Renewal · Scotland
Network Rail Depot & Compound Power
UK Solar Farm Internal Distribution
EV-Hub Substations · UK Motorway Network
Where Package Substation Transformers Excel.
UK DNO Secondary Substations
ENATS 35-2 compliant package substation transformers for UK DNO 11kV secondary substations.
UK Renewable Grid Connection
G99-compliant package transformers for UK solar, wind and BESS grid-connection substations.
Network Rail Trackside
Compact package substation transformers for trackside auxiliary supply and signalling power on UK rail.
UK EV & Industrial Estates
Pre-integrated package transformers for UK EV charging hubs and industrial estate distribution.
Frequently Asked Questions
Related Knowledge
FAQs, glossary terms and sizing steps mapped to this product.
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