Technical Parameters & Ratings
IEC / ANSI CertifiedFactory Standard
| Rated Capacity | 3150 kVA |
|---|---|
| Primary Voltage (U1) | 33,000 V (33 kV) |
| Secondary Voltage (U2) | 415 V / 240 V (3-Phase 4-Wire) |
| Vector Group | Dyn11 |
| Rated Frequency | 50 Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Primary Current (I1) | 55.11 A |
| Secondary Current (I2) | 4382.4 A |
| Guaranteed No-Load Loss (P0) | 2800 W |
| Guaranteed Load Loss (Pk at 75°C) | 21000 W |
| Short-Circuit Impedance (Uk) | 5.0% |
| HV Insulation Level | LI 170 / AC 70 (33kV Class) |
| Temperature Rise Limits | Top Oil ≤ 50K, Winding ≤ 55K (45°C Ambient) |
| Creepage Distance | ≥ 31 mm/kV (Outdoor Tropicalized Porcelain) |
| Core & Coil Weight | 4500 kg |
| Insulating Oil Weight | 2600 kg |
| Total Assembled Weight | 8900 kg |
| Overall Footprint (L×W×H) | 2300 mm × 1480 mm × 2400 mm |
| Governing Standards | IEC 60076, BS 171, SON NIS, NERC Code |
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 distribution networks
- Industrial plants and workshops
- Commercial buildings and mixed-use developments
- Public infrastructure projects
- Regional and municipal power distribution systems
Key Features
- 3150 kVA rated capacity with optimized core design for energy-saving applications
- Three-phase oil-immersed structure for stable outdoor operating performance
- class configuration suitable for distribution and industrial feeder networks
- Low-loss design approach intended to reduce operating cost over service life
- Supports project-based winding, voltage ratio, and accessory customization
- Suitable for utility and industrial buyers prioritizing efficiency and life-cycle value
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 an oil-immersed distribution transformer used for?
It steps down the network voltage to the level required by end users in utility, industrial and commercial distribution networks.
Which voltage classes does this range cover?
The range covers common distribution voltage classes with ratings sized to the load requirement of your network or project.
What cooling and insulation system is used?
The unit uses oil-immersed cooling with sealed or conservator tank design according to rating and site conditions, providing stable thermal performance.
Can the transformer be customized for my grid?
Yes. Voltage ratio, vector group, impedance, tap range and accessory package are all configurable to your specification.
Are routine tests performed before shipment?
Yes. Every unit is routine-tested before shipment and supplied with test reports for the project file.
