400 kVA Three - Phase Dry - Type Distribution Transformer Product Description
1. Product Overview
1.1 General Introduction
Our 400 kVA three - phase dry - type distribution transformer is a sophisticated electrical solution, precisely engineered to meet the power conversion and distribution demands across a wide gamut of applications. Whether it's deployed in large - scale industrial plants, sprawling commercial centers, or extensive residential communities, this transformer serves as a cornerstone for reliable and efficient power supply.
1.2 Model Significance
The model of this transformer adheres to industry - standard naming systems. For example, if it's part of a well - known series such as the SCB series, "SCB" denotes a three - phase epoxy - resin cast dry - type construction. The model number may further elaborate on details like its energy - saving grade, with higher values indicating enhanced energy - efficiency. The 400 kVA rating clearly defines its power - handling capacity, making it suitable for a broad spectrum of medium - to - large - scale power - intensive scenarios.
2. Structural Design
2.1 Core Construction
The core of the 400 kVA transformer is fabricated from high - quality cold - rolled oriented silicon steel sheets. These sheets are assembled using a full - inclined joint and multi - level step - by - step lamination process. This construction method effectively curbs the no - load loss of the core. By minimizing no - load loss, the transformer operates more efficiently, especially during periods of low or no load. Additionally, this design helps in reducing the noise generated by the transformer, making it suitable for installation near noise - sensitive areas such as residential neighborhoods, educational institutions, and healthcare facilities.
2.2 Winding Design
The windings are made of high - conductivity copper wires (or aluminum wires as per the design requirements). After winding, they are encapsulated in a solid insulation structure through epoxy - resin vacuum casting. The epoxy - resin offers excellent electrical insulation, ensuring that the windings can withstand high electrical stresses. This casting process also imparts mechanical strength and protection against environmental factors such as moisture, dust, and corrosion. As a result, the windings can effectively resist short - circuit impacts, which are common in power systems, ensuring the stable operation of the transformer even under challenging working conditions.
3. Performance Characteristics
3.1 High Efficiency and Energy - Saving
Our 400 kVA transformer is designed with advanced techniques and high - quality materials, resulting in remarkable energy - saving capabilities. Compared to traditional transformers, it has significantly lower no - load and load losses. This high efficiency not only helps end - users reduce their long - term power consumption costs but also contributes to a more sustainable power distribution system. By minimizing energy waste, the transformer plays a crucial role in promoting environmental conservation. It meets national and international energy - saving standards, validating its energy - efficient design.
3.2 Safety and Reliability
One of the key advantages of our dry - type transformer is its oil - free design. This eliminates the risks associated with oil - filled transformers, such as oil leakage, which can lead to fire hazards and environmental pollution. The epoxy - resin cast windings have excellent moisture - proof, dust - proof, and corrosion - proof properties. These characteristics ensure that the transformer can operate reliably in a wide range of environmental conditions, from humid coastal areas to dusty industrial zones. The reliable performance of the transformer is further enhanced by its ability to maintain stable operation under different load conditions, providing a consistent power supply to connected electrical equipment.
3.3 Low Noise Operation
The design of the core and windings is optimized to reduce the noise generated during the transformer's operation. In areas where the transformer is installed near residential or commercial buildings, low - noise operation is highly desirable. The reduced noise levels create a more comfortable environment for people living or working nearby. It also eliminates the need for additional noise - reduction measures, which can save costs during installation and operation.
4. Technical Parameters
4.1 Rated Capacity
The rated capacity of this transformer is 400 kVA, making it suitable for a diverse range of electrical loads. It can provide a stable power supply to large - scale industrial machinery, a comprehensive set of commercial equipment, or a significant number of residential buildings. This capacity enables it to handle the power demands of various applications, making it a versatile choice for different power distribution scenarios.
4.2 Rated Voltage
The high - voltage side of the transformer can be customized to various voltage levels according to the power grid requirements. Common high - voltage ratings include 10 kV, 20 kV, 35 kV, etc. The low - voltage side can also be tailored to meet the specific needs of end - users. In most general distribution applications, the low - voltage side is often set to 0.4 kV for powering commercial and industrial equipment. However, other voltage levels can be provided upon request to meet specific system requirements.
4.3 Voltage Regulation Range
The transformer is equipped with a voltage regulation range, typically ±5% or as specified by the customer. This feature allows the transformer to adjust the output voltage to compensate for voltage fluctuations in the power grid. Voltage fluctuations can occur due to changes in load demand, grid conditions, or the operation of other electrical equipment. By regulating the output voltage, the transformer ensures that the electrical equipment connected to the low - voltage side receives a stable and consistent power supply, which is essential for the proper operation and longevity of the equipment.
4.4 Insulation Class
Our 400 kVA transformer offers insulation classes such as Class F or Class H. These insulation classes have excellent heat - resistance performance. During operation, the transformer may experience varying temperatures, especially under high - load conditions. The high - quality insulation ensures that the transformer can withstand these thermal stresses without insulation breakdown, guaranteeing long - term stable operation.
4.5 Impedance Voltage
The impedance voltage of the 400 kVA transformer is carefully designed according to relevant standards and customer requirements. The impedance voltage plays a crucial role in limiting the short - circuit current in the power system. In the event of a short - circuit, the impedance of the transformer helps to control the magnitude of the short - circuit current, preventing excessive current flow that could damage the transformer and other electrical equipment in the system. This protection mechanism ensures the safe operation of the entire power system.
5. Application Scenarios
5.1 Industrial Applications
In industrial settings, such as large - scale manufacturing plants, chemical processing facilities, and heavy - equipment manufacturing units, the 400 kVA transformer is an ideal choice. These industries often have high - power - consuming equipment that requires a stable power supply. The transformer's ability to handle large loads, high - efficiency operation, and resistance to harsh industrial environments make it suitable for powering machinery, motors, and other electrical equipment used in the production process.
5.2 Commercial Establishments
For large - scale commercial buildings like super - shopping malls, large - scale convention centers, and high - end hotels, our 400 kVA transformer can meet their substantial power needs. These establishments require power for lighting systems, air - conditioning units, escalators, and a vast array of electrical appliances. The low - noise operation of the transformer is particularly important in commercial settings as it helps maintain a comfortable environment for customers and employees. Additionally, the transformer's energy - saving features can help commercial businesses reduce their electricity costs.
5.3 Residential Applications
In residential areas, especially in large - scale apartment complexes or high - density housing developments, the 400 kVA transformer can provide a reliable power supply to a significant number of households. It can handle the combined power demands of various electrical appliances used in homes, such as air - conditioners, refrigerators, and lighting systems. The transformer's safe and efficient operation ensures a comfortable living environment for residents.
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