3 Phase 315kVA 13.2kV 13.8kV 15kV to 400v 415v 460v Oil Filled Transformer

3 Phase 315kVA 13.2kV 13.8kV 15kV to 400v 415v 460v Oil Filled Transformer

1. Product Description

The 3 Phase 315kVA 13.2kV 13.8kV 15kV to 400v 415v 460v Oil Filled Transformer is a versatile medium-voltage three-phase distribution transformer engineered for global commercial, industrial and utility power grid systems. Built with universal voltage compatibility, this 315kVA oil filled power transformer supports three common primary medium voltage ratings of 13.2kV, 13.8kV and 15kV, paired with flexible secondary low voltage outputs including 400V, 415V and 460V to match regional power standards across Asia, Europe, North America and Latin America. Manufactured strictly in accordance with IEC 60076, ANSI and IEEE industry standards, this oil cooled distribution transformer serves as a reliable step-down power conversion unit for outdoor and indoor medium voltage power distribution projects.

This heavy-duty three-phase oil immersed transformer adopts high-grade CRGO grain-oriented silicon steel core and full copper winding coils, effectively lowering no-load current, magnetic flux leakage and operational power loss during long-term continuous operation. It features a fully sealed corrugated steel tank structure and professional vacuum oil filling technology, which isolates internal mineral insulating oil from external air, moisture and dust to prevent oil degradation and insulation aging. Designed with standard off-circuit tap changer with ±2×2.5% tapping range, the equipment allows flexible on-site voltage fine-tuning to adapt to fluctuating grid voltage conditions. With a stable 315kVA rated capacity and support for both 50Hz and 60Hz grid frequencies, this multi-voltage medium voltage transformer delivers consistent three-phase balanced output, making it a mainstream model for medium-load power distribution scenarios worldwide.

2. Core Purpose

The core purpose of this 3 Phase 315kVA Oil Filled Transformer is accurate medium-to-low voltage step-down conversion and stable terminal power distribution optimization. It primarily converts 13.2kV, 13.8kV or 15kV medium-voltage grid power into usable 400V, 415V or 460V low-voltage electricity, solving voltage mismatch issues between utility medium-voltage transmission lines and end-user industrial, commercial and residential electrical equipment. As a key piece of grid distribution equipment, it effectively stabilizes terminal voltage, balances three-phase load current, reduces line transmission loss and suppresses grid voltage fluctuation.

Different from single-voltage fixed transformers, this multi-specification oil filled distribution transformer adapts to diverse global power system requirements: 400V output fits most European and Asian industrial power systems, 415V matches universal civil three-phase power supply standards, and 460V perfectly serves North American industrial equipment operation. The 315kVA moderate rated capacity is precisely calibrated for medium-load power demand, providing sufficient peak load margin to cope with daily power consumption surges and equipment startup current impact. Beyond basic voltage transformation, it also improves overall power supply quality, minimizes equipment failure caused by unstable voltage, and ensures safe, continuous and efficient power delivery for regional power distribution networks.

3. Application Scenarios

Thanks to its wide voltage compatibility, durable oil cooling structure and stable 315kVA medium load capacity, this three-phase medium voltage oil filled transformer is widely deployed in utility grid renovation, light industrial production, municipal commercial facilities and rural power upgrading projects, covering most global medium-voltage medium-load power distribution scenarios.

3.1 Urban & Rural Utility Grid Distribution

This 13.2kV/13.8kV/15kV class oil filled transformer is the preferred terminal power distribution equipment for urban suburban grids, township power stations and rural power grid upgrading projects. Many regional utility grids adopt 13.2kV, 13.8kV or 15kV medium voltage transmission standards, and this multi-voltage transformer can perfectly match local grid parameters, outputting standard 400V, 415V or 460V low voltage for residential communities, village clusters and rural public facilities. It effectively solves the problems of insufficient terminal power capacity and unstable voltage in old grid systems, improving the reliability of residential daily power supply.

3.2 Light & Medium Industrial Power Supply

Small and medium-sized processing factories, mechanical workshops, food processing plants, textile factories and manufacturing auxiliary workshops are the core application scenarios of this 315kVA three-phase oil cooled transformer. Medium-load industrial equipment such as production motors, conveyor systems and processing machinery requires stable low-voltage three-phase power support. Users can select matched 400V, 415V or 460V output according to equipment specifications and local industrial power standards. The equipment supports long-term full-load continuous operation, fully meeting stable power demand of daily industrial production.

3.3 Municipal & Commercial Public Facilities

Urban commercial plazas, community service centers, campus facilities, hospital auxiliary areas and municipal public service buildings all rely on this reliable medium voltage distribution transformer for power conversion. Public facilities and commercial zones feature centralized medium power consumption, and the 315kVA load capacity can well bear daily stable power use and peak power consumption. With low operating noise and excellent operational stability, the oil filled transformer ensures uninterrupted power supply for lighting, office equipment, air conditioning systems and public safety facilities.

3.4 Remote Infrastructure & Engineering Projects

Highway service areas, water conservancy monitoring stations, outdoor scenic area facilities, remote communication base stations and field engineering auxiliary projects are mostly covered by 13kV to 15kV medium voltage grids. This weather-resistant oil immersed transformer supports outdoor pole-mounted and platform-mounted installation, adapting to unattended outdoor operation environments. Its flexible multi-voltage input and output design can adapt to different regional engineering power standards, providing stable and long-term power guarantee for remote infrastructure equipment.

4. Product Features

This 3 Phase 315kVA 13.2kV 13.8kV 15kV to 400v 415v 460v Oil Filled Transformer integrates optimized electromagnetic design, mature oil cooling technology and standardized industrial manufacturing, with prominent advantages of wide compatibility, low energy loss, strong weather resistance and low maintenance cost, suitable for large-scale popularization in global medium voltage power distribution projects.

4.1 Global Multi-Voltage Compatibility

Featuring ultra-wide voltage matching capability, this oil filled power transformer covers three mainstream medium voltage input grades (13.2kV, 13.8kV, 15kV) and three universal low voltage output grades (400V, 415V, 460V). It adapts to 50Hz and 60Hz dual grid frequencies, fully complying with IEC, ANSI and IEEE international standards. The flexible voltage configuration eliminates equipment replacement troubles caused by regional power standard differences, greatly improving project adaptability and reducing procurement and construction costs for cross-region power projects.

4.2 Low Loss & Energy-Saving Performance

Adopting high-performance low-loss CRGO silicon steel core and high-purity copper windings, the three-phase distribution transformer minimizes no-load loss and load loss during operation. The optimized electromagnetic winding structure suppresses magnetic flux leakage, ensuring power conversion efficiency over 98.5% under rated 315kVA load. Compared with traditional transformers, it reduces long-term grid operation energy consumption and line loss significantly, meeting international energy-saving and environmental protection requirements for power equipment, with lower operational costs for long-term grid operation.

4.3 Excellent Outdoor Weather Resistance & Stability

Specially optimized for outdoor harsh working conditions, the transformer shell adopts multi-layer anti-corrosion, rust-proof and UV-resistant electrostatic spraying technology, resisting rain erosion, high-temperature exposure, dust pollution and coastal salt spray corrosion. The fully sealed oil tank structure completely isolates internal insulating oil from external environment, avoiding oil deterioration and insulation moisture. It can operate stably in the temperature range of -25℃ to +50℃, supporting long-term unattended outdoor operation with strong environmental adaptability and structural stability.

4.4 Reliable Oil Cooling System & Long Service Life

Adopting standard ONAN natural oil circulation and air cooling mode, the equipment realizes uniform and efficient heat dissipation without auxiliary cooling devices. The high-vacuum oil injection and drying process removes internal air and moisture thoroughly, delaying insulation aging and component wear. Equipped with reinforced internal fixing structure, it prevents component displacement and vibration damage during transportation and operation. The overall design service life can reach more than 40 years under rated working conditions, with extremely low daily failure rate.

4.5 Complete Safety Protection & Low Maintenance

This medium voltage oil filled transformer is equipped with complete overvoltage, overcurrent, short-circuit and overload protection mechanisms, which can automatically cut off power supply and trigger fault protection in case of grid abnormalities, effectively protecting equipment and downstream electrical devices. The Dyn11 vector group design ensures balanced three-phase voltage and current output, avoiding phase unbalanced power supply faults. Daily maintenance is simple and convenient, only requiring regular oil level inspection, oil quality testing and radiator dust cleaning, with low later operation and maintenance costs and high comprehensive cost performance.

5. FAQ

5.1 How to select the correct voltage configuration for this 315kVA oil filled transformer?

Voltage configuration should be matched strictly with local grid primary voltage and on-site equipment secondary voltage requirements. For regional medium voltage grids of 13.2kV, 13.8kV or 15kV, select the corresponding primary voltage specification. For low voltage output, choose 400V for most Asian and European industrial systems, 415V for universal global civil three-phase power supply, and 460V for North American standard industrial equipment. We support fixed voltage configuration before delivery and customized tap settings to ensure on-site plug-and-play use without secondary adjustment, which greatly improves installation and commissioning efficiency.

5.2 What installation scenarios are suitable for this three-phase medium voltage transformer?

This 315kVA oil filled distribution transformer is mainly designed for outdoor installation, supporting pole-mounted and platform-mounted deployment for utility grids, rural power stations and suburban distribution points. It can also adapt to indoor substation installation with good ventilation and heat dissipation conditions. It is widely suitable for medium-load scenarios such as small and medium industrial workshops, municipal commercial facilities and rural centralized power supply areas. It is not recommended for closed, humid and poorly ventilated environments, which will affect heat dissipation efficiency and shorten equipment service life.

5.3 Does this 315kVA oil cooled transformer support overload operation?

The transformer is designed with a reasonable overload tolerance margin, which can withstand 10%-15% short-term instantaneous overload caused by equipment startup current and peak power surge. However, long-term continuous overload operation is strictly prohibited, as it will cause excessive internal oil temperature rise, accelerated insulation aging, increased operational loss and even oil deterioration and equipment burnout. In actual project application, it is recommended to reserve 10%-20% load margin based on actual power consumption to ensure long-term stable and safe full-load operation of the equipment.