Technical Parameters & Ratings
| Rated Capacity | 40000 kVA |
|---|---|
| High Voltage | 35 kV |
| Low Voltage | 6.3 kV / 6.6 kV / 10 kV / 11 kV / customized |
| Frequency | 50 Hz / 60 Hz |
| Phase | Three Phase |
| Cooling Method | ONAN / ONAF optional |
| Vector Group | YNd11 / Dyn11 / Yyn0 / customized |
| Tap Changer | Off-circuit tap changer / on-load tap changer optional |
| Tapping Range | ±2 x 2.5% / ±5% / customized |
| Winding Material | Copper / Aluminum |
| Core Material | CRGO silicon steel |
| Insulation Medium | Mineral insulating oil |
| Tank Type | Conservator tank / sealed tank optional |
| Accessories | Buchholz relay, oil level gauge, thermometer, pressure relief device, valves |
| Impedance Voltage | According to standard / customized |
| No-Load Loss | According to standard / customized |
| Load Loss | According to standard / customized |
| Standard | IEC / customized project specification |
| Installation | Outdoor |
| Application | Utility substations / industrial plants / infrastructure and regional power systems |
Technical Highlights
- This product combines dependable transformer platform design, flexible project configuration, and practical export-oriented construction. It is suitable for applications requiring stable electrical performance, configurable voltage ratios, outdoor durability, and documentation support for international project supply.
Application Scenarios
- Utility substations
- Industrial plants and heavy-load facilities
- Infrastructure and public utility projects
- Regional transmission and distribution networks
- Commercial and industrial power systems
Key Features
- 40000 kVA rated capacity for medium- to large-scale transmission and distribution projects
- high-voltage design suitable for substations and industrial power systems
- Oil-immersed structure for stable cooling performance and dependable long-term operation
- Available with copper or aluminum windings according to project and budget requirements
- Suitable for IEC-based specifications and project-oriented customization
- Outdoor installation design with configurable accessories and protection devices
Optional Configurations
- Low-voltage side rating and voltage ratio
- Frequency: 50 Hz or 60 Hz
- Vector group and tapping range
- Copper or aluminum winding
- Cooling method, accessory package, and monitoring option
- Tank structure, coating system, and special environmental adaptation
- Color, nameplate language, and document package
- Ambient temperature, altitude, and installation condition adaptation
Frequently Asked Questions
What is the typical lead time for a 40 MVA power transformer?
Standard lead time is 30 days after drawing approval. Large power transformers above 20 MVA are built to order; final schedule is confirmed against your technical specification and required test scope.
Which standards does this transformer comply with?
The unit is designed and manufactured to IEC 60076 (and ANSI/IEEE C57 where required), with routine tests performed on every unit before shipment.
Can the vector group and tap range be customized?
Yes. Vector group (YNd11, YNd1, YNyn0 and others), tap range, impedance and cooling class (ONAN/ONAF) are all configurable to match your grid study.
What test reports are supplied with the transformer?
Every unit ships with routine test reports including ratio, winding resistance, insulation resistance, power-frequency withstand, induced voltage and no-load/load loss measurements as applicable.
Do you support site installation and commissioning for export projects?
Yes. Supervision of installation and commissioning can be arranged for EPC and utility projects, together with a document package in your required language.
