160kVA 10kv 400v Three Phase Oil Immersed Transformer

160kVA 10kv 400v Three Phase Oil Immersed Transformer

1. Product Overview

The 160kVA 10kv 400v Three Phase Oil Immersed Transformer is a reliable mid-capacity power distribution transformer widely applied in global 10kV medium voltage power grid systems. Manufactured in full compliance with IEC 60076 international standards and GB/T 6451 industry specifications, this three-phase step-down oil immersed transformer belongs to the mainstream S11 and S13 low-loss transformer series, delivering stable voltage conversion for residential, commercial and light industrial power supply projects. As a cost-effective three-phase oil immersed power transformer, it fills the performance gap between small-capacity household transformers and large industrial transformers, becoming one of the most practical power transformation devices for grassroots power grid construction and renovation.

Designed with a standard 10kV high-voltage input and 400V low-voltage output configuration, this 10kV to 400V oil immersed distribution transformer efficiently converts medium-voltage overhead line power into standard three-phase four-wire 400V low-voltage electricity that matches global civil and light industrial power consumption standards. Adopting fully sealed oil immersion cooling technology and non-PCB anti-aging mineral insulating oil, the 160kVA three-phase oil filled transformer features low operational loss, excellent heat dissipation performance and strong outdoor environmental adaptability. Unlike dry-type electrical transformers that require strict indoor installation conditions, this outdoor-grade oil immersed transformer supports pole-mounted and ground-mounted outdoor deployment, requires minimal daily maintenance, and runs stably under long-term continuous load conditions.

Every finished 160kVA 10kv 400v three phase oil immersed transformer undergoes strict factory quality inspection, including partial discharge testing, full-load temperature rise verification, short-circuit impact resistance test and long-term aging operation detection. With optimized electromagnetic structure, balanced three-phase output and durable anti-corrosion casing, this energy-saving oil immersed electrical transformer has gained wide recognition among power engineering contractors, grid operators and small and medium enterprise users for its stable quality and high cost performance.

2. Technical Parameters

3. Core Product Features

This 160kVA 10kv 400v three phase oil immersed transformer adopts upgraded S11/S13 low-loss electromagnetic optimization technology and fully sealed corrugated oil tank structure, effectively improving the high energy consumption and poor stability of traditional old-model transformers. It balances energy efficiency, operational stability and cost, making it a highly reliable mid-capacity power transformation device for various civil and light industrial power distribution scenarios:

3.1 Ultra-low Power Loss & Outstanding Energy-saving Performance

The transformer core adopts high-permeability grain-oriented cold-rolled silicon steel sheets with full oblique lap joint technology, which effectively suppresses magnetic flux leakage and greatly reduces standby no-load iron loss. The uniformly wound high-purity copper coils lower internal winding resistance significantly, minimizing copper loss during rated load operation. As an energy-saving three-phase oil immersed transformer, it maintains ultra-low power consumption during long-term intermittent and continuous operation, effectively reducing daily grid operation costs and long-term power consumption expenditure for end users.

3.2 Mature ONAN Oil Immersed Cooling & Fully Sealed Insulation

Filled with environmental-friendly non-PCB anti-aging mineral insulating oil, this 10kV/400V step-down transformer adopts standard ONAN natural air circulation cooling mode. The internal insulating oil forms automatic circulating heat exchange, ensuring uniform internal temperature and stable operation during 24-hour uninterrupted power conversion work. The fully sealed corrugated oil tank structure completely isolates internal insulating oil from external air, moisture and dust, preventing oil oxidation, emulsification and insulation aging. This design ensures stable dielectric performance in humid, dusty and open-air outdoor operating environments.

3.3 Accurate Voltage Regulation & Strong Anti-interference Ability

Equipped with ±2×2.5% off-load tapping adjustment function, this three-phase electrical transformer accurately calibrates 10kV input voltage deviation caused by long-distance transmission and seasonal load fluctuation, ensuring stable and standard 400V low-voltage output. The optional Dyn11 vector group effectively balances three-phase current and suppresses grid harmonic interference and unbalanced load impact, while the Yyn0 configuration adapts to conventional balanced municipal grid scenarios. It effectively avoids power supply jitter and terminal electrical equipment damage caused by voltage surge and three-phase imbalance.

3.4 Superior Outdoor Adaptability & Durable Structural Design

The whole machine adopts thickened steel plate welding and multi-layer pickling, phosphating and electrostatic anti-corrosion spray treatment, featuring outstanding waterproof, rust-proof and dust-proof capabilities. This outdoor oil immersed power transformer supports both pole-mounted and ground-mounted installation, and can operate stably in rural field areas, suburban distribution stations and open-air engineering sites all year round. The reinforced internal core and winding structure enhances vibration resistance and short-circuit impact resistance, lowering daily equipment failure rate and improving overall operational safety.

3.5 Low Maintenance & High Comprehensive Cost Performance

Designed with simple and robust mechanical structure, this mid-capacity three-phase oil filled transformer has no vulnerable precision parts and requires minimal routine maintenance. The fully sealed maintenance-free design extends the replacement cycle of insulating oil, greatly reducing on-site inspection workload and after-sales maintenance costs. Compared with equivalent dry-type transformers and old-fashioned oil immersed transformers, it has lower procurement cost, stable operational performance and wider application flexibility, delivering excellent comprehensive economic benefits for mass power distribution projects.

3.6 Low-noise Operation & Environmental Safety Protection

Optimized core lamination and high-strength winding fixing technology effectively reduce operating vibration and running noise, fully meeting urban and rural environmental protection noise standards. Equipped with standard oil level gauge, real-time temperature detector and automatic pressure relief valve, the transformer supports real-time monitoring of operating status. In case of overload, overheating or internal short-circuit faults, the pressure relief device releases internal pressure timely to protect equipment, ensuring safe and stable operation of regional power distribution networks.

4. Core Product Uses

As a mainstream mid-capacity power transformation device for 10kV power distribution networks, the 160kVA 10kv 400v Three Phase Oil Immersed Transformer undertakes core functions of medium-low voltage conversion, decentralized regional power distribution and power quality stabilization, ensuring safe, efficient and stable power supply for various civilian and light industrial load scenarios:

10kV to 400V Standard Step-down Voltage Conversion: The core function is to convert 10kV medium-voltage grid transmission power into standard 400V three-phase low-voltage power, realizing safe and accurate voltage matching between high-voltage overhead transmission lines and terminal civilian, commercial and light industrial electrical equipment.

Decentralized Regional Power Distribution: This three-phase oil immersed electrical transformer is widely used for decentralized power distribution in townships, suburban residential clusters and scattered light industrial zones, reasonably distributing grid power according to actual peak and valley load demand, balancing three-phase load current and reducing line transmission loss and voltage drop.

Power Supply Quality Stabilization & Optimization: By adjusting off-load tap positions, the equipment calibrates voltage deviation caused by long-distance transmission and seasonal load changes, stabilizes terminal 400V voltage within standard range, suppresses minor grid harmonics and three-phase unbalance, and improves the stability of regional power supply quality.

Local Grid Fault Isolation & Safety Protection: It effectively isolates the upper 10kV medium-voltage main grid and local 400V low-voltage load system, preventing high-voltage fault surges from spreading to terminal electrical equipment and limiting the scope of grid faults in scattered power supply areas.

Long-term Stable Mid-capacity Load Power Guarantee: Relying on reliable heat dissipation and stable load resistance, the 160kVA oil immersed transformer supports 24-hour uninterrupted operation, meeting continuous and stable power demand for residential daily consumption, public facilities and light industrial production.

5. Wide Application Scenarios

With stable mid-capacity performance, strong environmental adaptability and ultra-high cost performance, the 160kVA 10kv 400v Three Phase Oil Immersed Transformer covers most mainstream mid-load power supply scenarios, widely serving urban and rural grid renovation, light industrial production, public infrastructure and new energy supporting projects:

5.1 Urban & Rural Power Grid Renovation Projects

This 160kVA 10kV/400V three-phase oil immersed transformer is the preferred equipment for rural power grid upgrading, township centralized power supply and suburban community grid reconstruction. It effectively solves insufficient power supply capacity and unstable voltage problems of aging power grids, improving regional power grid carrying capacity and residential power supply reliability.

5.2 Light Industrial & Small Factory Power Supply

Suitable for small manufacturing workshops, food processing plants, textile factories, woodworking processing bases and handicraft production workshops. The 160kVA moderate load capacity perfectly matches daily continuous power consumption of small and medium production lines and mechanical auxiliary equipment, ensuring stable and uninterrupted light industrial power supply.

5.3 Municipal & Public Facility Power Distribution

Widely used for power supply of community service centers, township hospitals, primary and secondary schools, rural water pump stations, street lighting systems and scenic area supporting facilities. Its low-noise, energy-saving and maintenance-free operation perfectly matches the long-term unattended operation needs of public infrastructure.

5.4 Small Distributed New Energy Grid Connection

Applicable for voltage conversion and grid connection of household and small-scale distributed photovoltaic power stations and micro wind power generation systems in rural areas. It stabilizes fluctuating new energy output, balances small-grid load and ensures safe and smooth grid connection of decentralized green power equipment.

5.5 Medium-term Temporary Engineering Power Supply

With compact structure, convenient installation and excellent outdoor weather resistance, this oil immersed power transformer is commonly used for fixed power guarantee of municipal construction sites, road renovation projects and rural infrastructure construction, providing reliable stable power support for medium-term field operation.

6. Frequently Asked Questions (FAQ)

Q1: What advantages does the 160kVA 10kV/400V three phase oil immersed transformer have over other capacity transformers?

The 160kVA capacity is a highly balanced mid-capacity model that perfectly avoids the insufficient load capacity of small transformers and the energy waste of large-capacity equipment. As a standard 10kV grade three-phase oil immersed transformer, it adopts advanced S13 low-loss technology, with lower no-load and load loss than traditional old models. Equipped with mature ONAN oil cooling system, it has better outdoor moisture-proof, dust-proof and heat dissipation performance than dry-type transformers. It runs stably under long-term full-load and intermittent overload conditions, with low failure rate and minimal maintenance requirements, making it the most cost-effective choice for most mid-load power distribution projects.

Q2: Which vector group should I choose, Dyn11 or Yyn0, for this 160kVA transformer?

Dyn11 and Yyn0 are two mainstream vector groups designed for different on-site load and grid conditions. The Dyn11 connection group features low zero-sequence impedance and excellent harmonic and three-phase unbalance suppression ability, making it more suitable for light industrial workshops and new energy grid connection scenarios with fluctuating and complex loads. The Yyn0 vector group has a simpler structure and more stable voltage output, which is ideal for residential communities, schools and hospitals with balanced and stable power load. We can customize the vector group strictly according to customers’ on-site grid environment and actual load characteristics.

Q3: How to carry out daily maintenance for the 160kVA 10kv 400v three phase oil immersed transformer?

This fully sealed three-phase oil immersed transformer is designed for low-maintenance unattended outdoor operation, adapting to most grassroots power distribution station working conditions. Daily maintenance only requires regular visual inspection of the oil tank sealing condition to prevent insulating oil leakage, and regular cleaning of radiator dust to ensure unobstructed heat dissipation. Long-term overload operation should be strictly avoided to prevent accelerated insulation aging. Professional staff are recommended to conduct a comprehensive insulating oil quality test and internal performance calibration every 2 to 3 years. With standardized simple maintenance, the equipment can reach a 25-year design service life and maintain long-term stable operational performance.