1500 kVA Ground Mounted Transformer-34.5/0.48 kV | USA 2024

Innovation leads the way, reliability you can trust – Three-Phase Pad-Mounted Transformer, powering a new era of efficiency!

01 General

1.1 Project Description

This 1500 kVA pad mounted transformer was delivered to South America in 2024. The rated power of the transformer is 1500 kVA, with the primary voltage 34.5GRDY/19.92 kV to secondary voltage 0.48GrdY/0.277 kV. The connection group is YNyn0. Pad mounted transformer, also known as the American prefabricated compartment, is a type of transformer equipment that integrates high-voltage switchgear and transformers. It usually uses load switches and current limiting fuses as power switches, with a simple structure, easy installation and maintenance, small size, small footprint, low noise, low loss, anti-theft, overload capacity, full protection and other advantages. Therefore, the American box has become widely used in the construction and transformation of urban distribution networks, as well as in some places with high requirements for land area, such as commercial areas and residential areas. This product is suitable for loop power supply, dual power supply or terminal power supply systems, as a power transformation, metering, compensation control and protection device. This product can be used for both the ring network and the terminal; the cable head can be urgently inserted and removed at 200A load current. The ZGS series pad mounted transformer adopts a completely enclosed design. The product is three-point grounding, the shell surface has no conductive parts, there is no insulation distance, to ensure personal safety, the high voltage wire adopts a fully insulated elbow type cable head, easy to plug and remove, the appearance is not charged, and you can touch. With insulated operating rod operation, more to ensure personal safety.

1.2 Technical Specification

1500 kVA transformer specifications type and data sheet

1.3 Drawings

1500 kVA pad mounted transformer diagram drawing and size.

02 Manufacturing

2.1 Core

The three-phase five-column iron core structure can better realize the uniform distribution of the magnetic field, reduce the fluctuation of the magnetic flux density, and improve the operating efficiency of the equipment. This design can balance the magnetic flux of each phase and reduce the imbalance of the three phases. Due to the unique structure of the design, the three-phase five-column core can effectively reduce eddy current loss and hysteresis loss. This helps to improve the energy efficiency of the transformer and reduce heat generation, thus extending the service life of the equipment. The five-column design provides higher mechanical strength and stability, helping to reduce vibration and noise during operation and improving the reliability of the equipment. This design helps to improve the current balance between the three phases, reduce the imbalance between phases, and improve the overall performance of the transformer.

2.2 Winding

Due to its large contact area and short current path, low-voltage foil winding can reduce the resistance and leakage inductance of the winding, which helps to improve the efficiency of the transformer. The high-voltage wire winding can withstand higher voltages and improve the overall electrical performance. The combination of the two can obtain better electromagnetic properties. The low-pressure foil-wound construction provides better heat dissipation characteristics because foil-wound is easier to dissipate heat. The design of high voltage wire winding is better suited to withstand high temperature environments. When used in combination, higher load capacity can be achieved and the risk of overheating can be reduced at high loads. The low-pressure foil-wound construction provides better heat dissipation characteristics because foil-wound is easier to dissipate heat. The design of high voltage wire winding is better suited to withstand high temperature environments. When used in combination, higher load capacity can be achieved and the risk of overheating can be reduced at high loads. Due to its structural characteristics, low-pressure foil winding usually has better mechanical strength and short-circuit resistance. High-voltage wire winding is suitable for high voltage and relatively small current fluctuations. The combined design can effectively improve the safety and reliability of the transformer in the case of short circuit.

2.3 Tank

The tank is made of corrosion-resistant materials (such as carbon steel, aluminum alloy or stainless steel), and is treated with anti-rust and anti-corrosion. This design can ensure the long-term stable operation of the transformer in various climatic conditions and adapt to the strict requirements of the outdoor environment. The tank design allows a good contact area between the insulating oil of the transformer and the air, thereby increasing the heat dissipation capacity. Effective heat dissipation can prevent the transformer from overheating and ensure its long-term stable operation. The insulating oil plays a dual role of insulation and cooling in the tank, improving the safety and reliability of the transformer. The design of the tank ensures an adequate and even distribution of oil, resulting in excellent insulation. The tank of the transformer is designed with shock absorption and noise reduction in mind to reduce the mechanical vibration and noise generated during operation, thereby improving the comfort of the surrounding environment.

2.4 Final Assembly

Key components of the assembly include: 1. Transformer Core: Contains the three-phase windings for voltage transformation. 2. Metal Enclosure: A robust casing protects the internal components from environmental elements like water, dust, and mechanical damage. The enclosure typically features a locking mechanism to prevent unauthorized access. 3. Terminal Connections: Used for connecting the input and output cables. Terminals are often equipped with sealing measures to ensure waterproofing and dust resistance. 4. Grounding System: Ensures the transformer operates safely and prevents safety issues due to electrical faults. 5. High and Low Voltage Switchgear: Include circuit breakers or fuses to control the flow of current and provide protection in case of faults. 6. Pressure Relief Devices: Releases internal pressure if it exceeds safety limits to protect the transformer from serious damage.

03 Testing

04 Packing and Shipping

05 Site And Summary

Thank you for your interest in our three-phase pad-mounted transformer! As a critical component of power distribution systems, our product stands out with its superior performance, robust design, and efficient operation. It is widely used in industrial, commercial, and public facilities, providing safe, reliable, and energy-efficient solutions for your power system. Upholding the principles of technological innovation and quality service, we are dedicated to creating greater value for you and advancing the intelligent and sustainable development of the energy sector. We look forward to working with you! For more information, please feel free to contact us anytime!