Key Advantages of Three Phase Distribution Transformers
- Prolonged Service Life
Hermetic sealing shields internal parts from moisture and contaminants, extending lifespan by 30%+ compared to open-type models. - Minimal Maintenance
Sealed design eliminates need for regular moisture checks or contamination cleanup, cutting maintenance workload by 50%.
- Enhanced Operational Reliability
Reduced exposure to external factors minimizes failure risks in critical applications (e.g., power grids, industrial plants). - Environmental Protection
Prevents oil leaks that could contaminate soil/water, aligning with EPA standards for eco-friendly operation.
Parameter of Three Phase Distribution Transformer
| S11-M series 33kV oil-immersed three-phase distribution transformer | |||||||
Rated Capacity(kVA) | Voltage combinations | Connection Method | No-load loss (W) | Load loss (W) | No-load current (%) | Short-circuit impedance | |
| HV（kV） | LV（kV） | ||||||
| 50 | 33 35 38.5 | 0.4 0.416 0.420 0.440 | Dyn11 or Yyn0 | 210 | 1270/1210 | 2 | 6.5 |
| 100 | 290 | 2120/2020 | 1.8 | ||||
| 150 | 340 | 2500/2380 | 1.7 | ||||
| 160 | 360 | 2970/2380 | 1.6 | ||||
| 200 | 430 | 3500/3330 | 1.5 | ||||
| 250 | 510 | 4160/3960 | 1.4 | ||||
| 300 | 610 | 5010/4770 | 1.4 | ||||
| 400 | 730 | 5050/5760 | 1.3 | ||||
| 500 | 860 | 7280/6930 | 1.2 | ||||
| 600 | 1040 | 8280 | 1.1 | ||||
| 750 | 1230 | 9900 | 1 | ||||
| 1000 | 1440 | 12150 | 1 | ||||
| 1250 | 1760 | 14670 | 0.9 | ||||
| 1500 | 2120 | 17550 | 0.8 | ||||
| 2000 | 2490 | 20740 | 0.8 | ||||
| 2500 | 2950 | 24420 | 0.8 | ||||
| 3000 | 3510 | 29050 | 0.7 | ||||
| 4000 | 4200 | 34940 | 0.7 | ||||
1000kVA Copper Oil Three Phase Distribution Transformer: Powering Your Needs
In the world of electrical power distribution, the 1000kVA copper oil three-phase distribution transformer stands as a crucial component. This article will delve into the details of this transformer, exploring its features, applications, and why it might be the right choice for various power requirements.
Understanding the Basics of a 1000kVA Copper Oil Three-Phase Distribution Transformer
Construction and Components
A 1000kVA copper oil three-phase distribution transformer consists of several key components. The core, typically made of high-grade magnetic materials such as silicon steel, provides a low – low-reluctance path for the magnetic flux. Wrapped around the core are the primary and secondary windings, which are made of copper conductors. Copper is preferred due to its excellent electrical conductivity, allowing for efficient power transfer.
The transformer is immersed in a tank filled with insulating oil. This oil serves multiple purposes. Firstly, it provides electrical insulation between the windings and the core, preventing any short-circuits. Secondly, it acts as a coolant, dissipating the heat generated during the transformer’s operation. The tank is designed to be robust, protecting the internal components from external factors such as moisture and physical damage.
Working Principle
The working principle of a three – phase distribution transformer is based on electromagnetic induction. When an alternating current (AC) is applied to the primary winding, it creates a magnetic flux in the core. This magnetic flux, which varies sinusoidally with time, links with the secondary winding. According to Faraday’s law of electromagnetic induction, an electromotive force (EMF) is induced in the secondary winding. The ratio of the number of turns in the primary winding to the number of turns in the secondary winding determines the voltage transformation ratio.
Performance Advantages of a 1000kVA Copper Oil Three – Phase Distribution Transformer
High Efficiency
One of the significant advantages of a 1000kVA copper oil three – phase distribution transformer is its high efficiency. Copper windings have low resistance, which reduces the copper losses (I²R losses) in the transformer. Additionally, the design of the core and the use of high-quality magnetic materials minimize the core losses, such as hysteresis and eddy current losses. As a result, a well – designed 1000kVA copper oil transformer can achieve efficiency levels of up to 98% or more, depending on the load conditions. This high efficiency not only saves energy but also reduces operating costs over the long term.
Good Voltage Regulation
Voltage regulation is an important aspect of a distribution transformer. A 1000kVA copper oil three-phase distribution transformer offers good voltage regulation. When the load on the transformer changes, the voltage at the secondary terminals should remain within an acceptable range. The transformer’s design, including the impedance of the windings and the tap-changing mechanism (if equipped), helps in maintaining a stable output voltage. This is crucial for ensuring the proper operation of electrical equipment connected to the secondary side, as voltage fluctuations can damage sensitive electronics.
High Short – Circuit Current Withstand Capacity
In the event of a short – circuit in the electrical system, a large amount of current can flow through the transformer. A 1000kVA copper oil three – phase distribution transformer is designed to withstand high short – circuit currents. The robust construction of the windings and the mechanical strength of the core enable the transformer to endure the mechanical and thermal stresses caused by short-circuit currents. This ensures the safety and reliability of the transformer and the overall electrical system during fault conditions.
Applications of a 1000kVA Copper Oil Three – Phase Distribution Transformer
Industrial Applications
In industrial settings, a 1000kVA copper oil three-phase distribution transformer is commonly used. Factories and manufacturing plants often require a large amount of electrical power to run their machinery and equipment. The transformer steps down the high – voltage power from the utility grid to a suitable voltage level for use in the factory. For example, in a metal-processing plant, heavy-duty machinery such as large-scale lathes, milling machines, and electric furnaces may be powered by a 1000kVA transformer. The high – efficiency and high – short – circuit current withstand capacity of the transformer make it suitable for the demanding power requirements of industrial applications.
Commercial Applications
Commercial buildings, such as shopping malls, office complexes, and hotels, also rely on 1000kVA copper oil three – phase distribution transformers. These buildings have a diverse range of electrical loads, including lighting systems, air – conditioning units, elevators, and computer servers. The transformer provides a stable and reliable power supply to meet the needs of these various electrical appliances. In a large shopping mall, for instance, the lighting of the stores, the operation of escalators, and the cooling systems for the food court may all be powered by a 1000kVA transformer. The good voltage regulation of the transformer ensures that the electrical equipment in these commercial buildings operates smoothly.
Residential Substations
In residential areas, 1000kVA copper oil three-phase distribution transformers are used in substations to distribute power to multiple households. These transformers step down the high-voltage power from the main grid to a lower voltage that is suitable for residential use, typically 230V or 400V (depending on the region). They are often installed in outdoor substations or in underground vaults in urban areas. The reliable performance of the transformer is essential for providing a continuous power supply to homes, ensuring that residents can use their electrical appliances, such as refrigerators, televisions, and washing machines, without interruption.
Choosing the Right 1000kVA Copper Oil Three – Phase Distribution Transformer
Consideration of Load Requirements
When selecting a 1000kVA copper oil three – phase distribution transformer, it is crucial to accurately assess the load requirements. This involves determining the maximum power demand, the nature of the load (resistive, inductive, or capacitive), and the load variation pattern over time. For example, if the load is mainly inductive, such as in a factory with a large number of motors, the transformer should be selected with a sufficient kVA rating to handle the reactive power as well as the real power. Understanding the load requirements will help in choosing a transformer that can operate efficiently and reliably under the specific conditions.
Quality and Reputation of the Manufacturer
The quality of the 1000kVA copper oil three-phase distribution transformer depends on the reputation and manufacturing standards of the manufacturer. It is advisable to choose a transformer from a well – established and reputable manufacturer. A good manufacturer will use high-quality materials in the construction of the transformer, follow strict quality-control procedures during the manufacturing process, and conduct thorough testing before the transformer is released into the market. Transformers from reputable manufacturers often come with warranties, providing additional assurance of their reliability.
Compliance with Standards
The transformer should comply with relevant national and international standards. In the electrical industry, standards such as IEC (International Electrotechnical Commission) and IEEE (Institute of Electrical and Electronics Engineers) standards ensure the safety, performance, and compatibility of electrical equipment. A 1000kVA copper oil three-phase distribution transformer that meets these standards is more likely to be reliable and suitable for use in a wide range of applications. Compliance with standards also indicates that the transformer has been designed and tested to withstand normal operating conditions as well as abnormal conditions, such as short-circuits.
In conclusion, the 1000kVA copper oil three – phase distribution transformer is a versatile and reliable electrical device that plays a vital role in power distribution across various sectors. Its high efficiency, good voltage regulation, and high short-circuit current withstand capacity make it suitable for industrial, commercial, and residential applications. When choosing a transformer, careful consideration of load requirements, the quality of the manufacturer, and compliance with standards is essential to ensure optimal performance and long – term reliability.
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