315kVA Oil-Immersed High Voltage Power Supply Distribution Transformer
Feb 04, 2026
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In modern electrical distribution networks, the 315kVA Oil-Immersed High Voltage Power Supply Distribution Transformer is a reliable choice for industrial, commercial, and utility applications. Designed for efficiency, safety, and long-term performance, it ensures stable power delivery in high-voltage environments.
GNEE, as a professional manufacturer, provides factory-direct 315kVA Oil-Immersed Transformers with full customization options, strict quality control, and global export capabilities. Whether your project involves a new substation, grid expansion, or industrial facility, choosing the right transformer is critical for reducing energy loss and ensuring reliable operation.
Transformer core and winding assembly, factory production line
Manufacturer Overview – GNEE 315kVA Oil-Immersed High Voltage Distribution Transformers
GNEE is a leading transformer manufacturer established in 2008, specializing in oil-immersed distribution transformers.
Our 315kVA Oil-Immersed High Voltage Power Supply Distribution Transformer is designed for:
- Industrial plants and factories
- Grid distribution and substations
- Commercial and municipal power supply
- Key manufacturer advantages:
- Direct factory supply, eliminating middlemen
- Customizable voltage, vector group, and insulation class
- Full compliance with IEC, ANSI, and local grid standards
- Technical support from selection to installation
Versatile Application Scenarios: Adapting to Diverse Power Demands
With its robust performance and flexible configuration, the 315kVA oil-immersed transformer is widely used in multiple fields, becoming a backbone of power supply and distribution:
Urban Commercial and Residential Areas: It serves as the primary feeder for shopping centers, mid-rise mixed-use buildings, residential communities, and campus ring mains. Its low no-load loss effectively reduces standby energy consumption, lowering operational expenses for property management and power supply companies.
Industrial Parks and Manufacturing Units: For light-to-medium manufacturing facilities (involving machining, assembly, and processing) and medium-demand industrial parks, the transformer provides stable voltage output and strong short-circuit withstand capacity, ensuring uninterrupted production operations.
Renewable Energy Integration: It is perfectly suited for wind and solar power generation systems, adapting to the variable output characteristics of renewable energy sources. As a key component in BESS (Battery Energy Storage Systems) and inverter-connected substations, it realizes efficient step-down conversion and low stray loss, improving the round-trip economics of energy storage.
Specialized Power Hubs: Clustered EV fast-charging stations and energy and power distribution stations benefit from its high utilization efficiency and reduced load/no-load losses, supporting the rapid development of electric mobility and distributed power grids.
Technical Advantages: Integrating Reliability, Maintainability, and Intelligence
The 315kVA oil-immersed transformer stands out in the market due to its comprehensive technical advantages, addressing the core needs of users for safety, efficiency, and ease of use:
Efficient and Energy-Saving: Compliant with Ecodesign Tier-2 efficiency standards, it minimizes energy waste under both no-load and load conditions, enabling quicker investment payback in high-duty cycle applications.
Safety and Durability: The transformer features a sealed oil-immersed structure with superior insulation and cooling performance, extending its service life and reducing maintenance requirements. Key safety components include magnetic oil level indicators with alarm contacts, oil temperature gauges with alarm/trip functions and RTD output, pressure-relief devices, and vacuum pressure gauges, providing multi-layer protection against overheating, overpressure, and oil leakage.
Service-Friendly Design: External gauges, easily accessible oil drain/sample valves, lifting lugs, and jacking pads simplify on-site maintenance, minimizing downtime and labor costs. The NEMA 3R stainless-steel marshalling/control box centralizes wiring and control terminals, enhancing operational convenience.
Intelligent Monitoring Capabilities: Equipped with industry-standard alarm/trip contacts and optional remote telemetry integration, it supports real-time monitoring of temperature, humidity, load, and winding temperature. The intelligent monitoring system enables remote asset management and fault early warning, aligning with modern power grid management needs.
Strong Environmental Adaptability: With a standard operating altitude of ≤1,000m (customizable for higher altitudes) and optional protection levels such as IP20 (indoor clean environments) and IP23 (outdoor or humid environments), it can operate stably in diverse climatic and installation conditions.
Technical Specifications of 315kVA Oil-Immersed High Voltage Power Supply Distribution Transformer
| Parameter | Specification |
|---|---|
| Rated Capacity | 315 kVA |
| Transformer Type | Oil-Immersed / Distribution Transformer |
| Cooling Method | ONAN |
| Rated Voltage (HV/LV) | Customized (e.g., 11kV / 0.4kV) |
| Frequency | 50Hz / 60Hz |
| Insulation Class | Class A |
| Vector Group | Dyn11 / Yyn0 |
| Installation | Indoor / Outdoor |
| Standards | IEC / ANSI / GB |
Transformer loading into containers, substation installation scene
Maintenance and Safety Measures
Long-term reliability of the 315kVA Oil-Immersed High Voltage Power Supply Distribution Transformer depends on regular maintenance:
- Periodic oil sampling and dielectric testing
- Monitoring for overheating or abnormal noise
- Inspection of bushings, radiators, and conservator
- Prompt attention to leakage or mechanical damage
These measures prevent failures, reduce downtime, and extend transformer life.
Conclusion: Reliable High Voltage Power Supply with 315kVA Oil-Immersed Transformer
The 315kVA Oil-Immersed High Voltage Power Supply Distribution Transformer from GNEE combines efficiency, safety, and durability for medium-voltage networks. It is a trusted choice for industrial, commercial, and utility applications.
GNEE provides factory-direct supply, customized solutions, and full technical support.
👉 Contact GNEE today to get a detailed quotation and technical consultation for your 315kVA Oil-Immersed High Voltage Power Supply Distribution Transformer project.