1500 Kva 3000kva Electrical Transformers 33kv Three-phase Oil-immersed Transformer

1. Product Overview

The 1500KVA and 3000KVA 33kv three-phase oil-immersed transformer is a high-performance medium-voltage power conversion equipment compliant with IEC 60076 and international electrical industry standards. As core electrical transformers for medium and large-scale power distribution systems, this series of oil-immersed power transformers adopts mature oil-immersed cooling and insulating technology, covering two mainstream power capacity specifications of 1500KVA and 3000KVA to meet differentiated power load demands of various scenarios. Designed for 33KV high-voltage grid access, the three-phase balanced structural layout ensures stable three-phase current and voltage output, effectively solving voltage conversion and power transmission problems in industrial power supply, municipal power grid transformation and new energy power distribution projects. Compared with dry-type transformers, this sealed oil-filled transformer features stronger environmental adaptability and higher load-bearing capacity, becoming the preferred power transmission and transformation equipment for medium-voltage power systems.

2. Core Product Features

2.1 Ultra-Low Energy Loss and High Power Efficiency

This 33KV three-phase oil-immersed electrical transformer adopts high-quality cold-rolled grain-oriented silicon steel cores and optimized step-lap joint technology, which greatly reduces no-load loss and load loss during equipment operation. The 1500KVA and 3000KVA capacity models are precisely calibrated in electromagnetic design, with power transmission efficiency up to 99.5%, effectively lowering long-term operating energy consumption for power enterprises and industrial users. The low-loss design not only reduces operational costs but also improves the energy-saving performance of the entire power distribution system, meeting the energy-saving and emission-reduction requirements of modern power infrastructure.

2.2 Reliable Oil-Immersed Heat Dissipation and Insulation Performance

Equipped with a fully sealed oil tank and high-purity insulating transformer oil, the product builds an efficient circulating heat dissipation system. The corrugated radiator structure realizes automatic heat dissipation without auxiliary cooling equipment, ensuring stable temperature operation under full-load and long-term continuous working conditions. The excellent insulating property of the oil-immersed structure isolates internal windings from external humid and dusty air, effectively preventing insulation aging and breakdown. This structural design enables the 3000KVA high-capacity model to maintain stable heat dissipation and insulation performance under high load, while the 1500KVA model achieves energy-saving and low-noise operation in conventional load scenarios.

2.3 Robust Structural Design and Long Service Life

The electrical transformer adopts an integral welded steel plate oil tank with a unique seamless welding process, eliminating oil leakage risks fundamentally. All sealing flanges adopt grooved sealing technology, matched with copper oil drain valves and vacuum butterfly radiators, ensuring excellent airtightness and pressure resistance. The internal high-purity copper windings have strong electrical conductivity and anti-aging ability, with excellent short-circuit resistance and overload resistance. Under standard operating conditions, the service life of this series of 33KV oil-immersed transformers can exceed 35 years, greatly reducing equipment replacement and maintenance costs for users.

2.4 Strong Environmental Adaptability and Operational Stability

Different from ordinary low-voltage transformers, this 33KV medium-voltage transformer is designed for harsh outdoor and industrial environments. It can stably operate in a wide temperature range, with strong resistance to humidity, corrosion and electromagnetic interference. The three-phase balanced design avoids voltage imbalance and power fluctuation problems, ensuring continuous and stable power output. The equipment is equipped with overvoltage, overcurrent and short-circuit protection mechanisms, which can quickly cut off faulty circuits in case of abnormal power grids, effectively protecting subsequent power consumption equipment and improving the safety and stability of the entire power distribution system.

3. Core Product Uses

3.1 Medium-Voltage Power Voltage Conversion

The core function of the 1500KVA and 3000KVA 33kv three-phase oil-immersed transformer is to realize step-up and step-down conversion of 33KV medium-voltage power. It can convert high-voltage grid 33KV electric energy into 10KV, 6.6KV and other medium and low voltage power suitable for industrial production and civil power distribution, and can also boost low-voltage power for grid-connected power transmission. As key power conversion equipment in medium-voltage power systems, it solves the matching problem between high-voltage transmission grid and terminal power consumption equipment, realizing efficient power transmission and distribution.

3.2 Stable Power Load Distribution and Regulation

According to different load demands, the 1500KVA conventional capacity model is suitable for medium-load power distribution scenarios, while the 3000KVA large-capacity model undertakes high-load power supply tasks. The transformer can balance three-phase power loads, avoid local power overload and voltage drop, realize reasonable distribution of grid power resources, and ensure the stability and uniformity of terminal power supply. It can adapt to long-term continuous load operation and intermittent peak load operation, flexibly coping with power load fluctuations in different production and operation cycles.

3.3 Power Grid Operation and Fault Safety Protection

In the power transmission and distribution link, this oil-immersed power transformer acts as a safety barrier for the power system. Its excellent short-circuit resistance and overvoltage resistance can effectively buffer grid voltage fluctuations and instantaneous impact current, reduce grid operation faults, and improve the anti-interference ability of the power distribution network. At the same time, the sealed structure can avoid internal component damage caused by external environmental factors, reduce equipment failure rates, and ensure the safe and orderly operation of regional power grids and user power supply systems.

4. Main Application Scenarios

4.2 Industrial Park and Heavy Industry Power Supply

Large industrial parks, chemical plants, steel mills, cement factories and other heavy industrial enterprises have high power consumption and high requirements for power supply stability. The 3000KVA 33KV three-phase oil-immersed transformer is widely used in such high-load industrial scenarios, providing stable medium-voltage power support for large mechanical equipment, production lines and industrial supporting facilities. The 1500KVA model is suitable for medium-sized processing factories, light industrial parks and other medium-load industrial scenarios, meeting the daily production and power distribution needs of industrial enterprises.

4.2 Municipal Power Grid Construction and Renovation

In urban and rural power grid upgrading, community centralized power supply and municipal supporting power distribution projects, this 33KV electrical transformer is an essential core equipment. It is applied to urban medium-voltage distribution substations and rural power grid reconstruction projects, realizing regional power transmission and voltage regulation, solving the problems of insufficient power supply capacity and unstable voltage in urban and rural areas. Its outdoor installation adaptability and low maintenance characteristics are very suitable for municipal public power infrastructure construction, reducing the later operation and maintenance pressure of power grid departments.

4.3 New Energy Power Generation and Grid Connection

With the rapid development of new energy industry, this oil-immersed transformer is widely used in photovoltaic power stations, wind power plants and biomass power generation projects. It converts the unstable electric energy generated by new energy power generation into stable medium-voltage electric energy, and realizes safe grid-connected power transmission. The 1500KVA and 3000KVA capacity models can adapt to the power generation load of small and medium-sized new energy power stations, effectively improving the utilization rate of new energy electric energy and promoting the stable operation of new energy power grid systems.

4.4 Infrastructure and Commercial Complex Power Distribution

Key infrastructure projects such as railway transit, highway engineering, water conservancy projects, as well as large commercial complexes, logistics parks and campus power supply systems, all need stable and reliable medium-voltage power support. This three-phase oil-immersed power transformer is applied to the power distribution system of these scenarios, providing continuous and safe power guarantee for infrastructure operation and commercial public power consumption. Its strong environmental adaptability can adapt to outdoor open-air operation and complex construction site environments, meeting the power supply demands of various public infrastructure scenarios.