2000 kva three phase pad mounted transformer

2000 kva three phase pad mounted transformer is a complete set of transformer and distribution equipment that combines combined transformer, load switch and protective fuse device of high-voltage power receiving part, metering and switch of low-voltage power distribution part. Technology, a new type of complete set of transformer and distribution equipment developed in combination with actual conditions.

Because the 2000 kva three phase pad mounted transformer has the characteristics of small size, low investment, convenient operation, fast installation, simple maintenance, etc., it is widely used in power distribution systems, especially in the construction and transformation of urban and rural power grids, and is widely used in industrial parks. , Residential quarters, commercial centers and high-rise buildings and other occasions.


2000 kva three phase pad mounted transformerTable of Contents

2000 kva Pad Mounted Transformer Features

The structure is compact and reasonable, and the volume is small, which is only about one-third of the European-style box change of the same capacity;

Fully sealed and fully insulated structure, no safety barrier is required, and personal safety is guaranteed;

There are a variety of power supply schemes for users to choose from, which can adopt terminal power supply and realize ring network or dual power supply;

S11 oil-immersed power transformer is adopted, which has low loss, low temperature rise and strong overload capacity;

Double fuses (backup protection fuse + plug-in fuse) are used for protection, and the plug-in fuse fuse has the characteristics of current and temperature dual sensitivity to ensure the safe and reliable operation of the product;

The 200A cable connector can be plugged and unplugged under load, and can be operated as a load switch in an emergency. It also has the characteristics of an isolating switch.

The winding adopts Dyn11 connection and the iron core adopts a three-phase four-column structure, so that the product can run under any asymmetric load, and the neutral point does not drift, the voltage is stable, the power supply quality is high, the cabinet heats up, the noise is low, and the lightning protection performance is good ;

The cabinet adopts anti-corrosion design and special spray paint treatment, beautiful and novel, suitable for various environments, and achieve the effect of beautifying the city.

two types of three phase pad mounted transformer
two types of three phase pad mounted transformer

Use Environment of 2000 kva 3 phase pad-mounted transformer

  • Altitude: not more than 1000 meters;
  • Ambient temperature: no higher than +40°C, no lower than -25°C, daily average temperature difference no more than 35°C, annual average temperature difference no more than 20°C;
  • The wind speed does not exceed 35m/s;
  • There is no explosion hazard in the installation site, no chemical corrosion and severe vibration;
  • Cooling method: natural air cooling (AN).

Pad-mounted Transformer Sizes

The 2000 kva three phase pad mounted transformer is divided into a transformer part and a control cabinet part.

The transformer part is a fully sealed structure, and the insulating oil can be high ignition point oil or ordinary oil.

The control cabinet is divided into a high-voltage room and a low-voltage room.

The high-voltage room is installed with: high-voltage cable plug, lightning arrester, load switch operating handle, non-excitation tap switch handle, plug-in fuse, pressure release valve, thermometer, pressure gauge, oil Position indicator, oil filling plug, oil drain valve, etc., load switch, non-excitation tap changer, plug-in fuse, etc. are all immersed in transformer oil together with the transformer core.

The high-voltage cable and the transformer are connected by elbow cable connectors.

The low-voltage side can be installed with air circuit breakers, current transformers, as well as electric energy meters, ammeters and voltmeters, and output circuits and capacitance compensation devices can be configured according to user needs.

2000 kva 3 Phase Pad-mounted Transformer Specifications

No. ItemUnitData
1Rated voltagePrimary sidekV10
Secondary sidekV0.4
2Rated capacitykva100~800
3No-load voltage regulation±2×2.5%
4Connection methodD.yn11
5Rated insulation levelHigh voltage side lightning impulse withstand voltageKV75
High-voltage side power frequency withstand voltage 1minKV35
Low-voltage side power frequency withstand voltage 1minKV2.5
Control and metering loop 1minKV2
6noise level  ≤45
7Protection level IP34
8Cooling method Oil-immersed self-cooling

2000 kva 3 Phase Pad-mounted Transformer Specifications

2000 kva three phase pad mounted transformer is a complete set of transformer and distribution equipment that combines combined transformer, load switch and protective fuse device of high-voltage power receiving part, metering and switch of low-voltage power distribution part. Technology, a new type of complete set of transformer and distribution equipment developed in combination with actual conditions.

Because the 2000 kva three phase pad mounted transformer has the characteristics of small size, low investment, convenient operation, fast installation, simple maintenance, etc., it is widely used in power distribution systems, especially in the construction and transformation of urban and rural power grids, and is widely used in industrial parks. , Residential quarters, commercial centers and high-rise buildings and other occasions.

What is the 2000 kva three phase pad mounted transformer?

The 2000 kva three phase pad mounted transformer adopts a number of scientific research results such as a new type of insulation structure and a structure to improve the ability of short-circuit resistance.

Using new technology, high-quality materials, advanced equipment, and other means, its performance has reached the international advanced level.

Compared with the S7 series, the no-load loss is reduced by an average of 10.25%, the no-load current is reduced by 37.9%, and the load loss is reduced by an average of 22.4%.

2000 kva Pad-mounted Transformer Functions and Features

The iron core is a fully inclined three-stage joint laminated structure, and the no-load loss and no-load current are lower than the old products;

The high and low voltage windings are all wound with oxygen-free copper wire, the high voltage winding adopts a multilayer cylindrical structure, and the low voltage winding adopts a cylindrical structure and an improved spiral structure;

Using a new type of insulation structure, strong short-circuit resistance;

Use new components and fasteners

The standard of transformer three-phase resistance unbalance rate

According to the specified capacity of power transformers above 1. 6MVA, the unbalance rate of phase resistance should not be greater than 2%, and the unbalance rate of line resistance should not be greater than 1% for windings without a neutral point; power with a capacity of 1.6MVA and below For transformers, the unbalance rate of phase resistance is generally not more than 4%, and the unbalance rate of line resistance is generally not more than 2%.

In engineering practice applications, generally for all three-phase transformers, regardless of their capacity, the limit of the unbalance rate of the DC line resistance is 2%.

What are the consequences of transformer oil leakage? What are the hazards?

It is the basic equipment for power transmission and distribution and is widely used in industry, agriculture, transportation, urban communities and other fields. Transformer oil leakage is the most common fault in the entire power transformer. It will cause subsequent problems, such as serious environmental pollution to the air, and may also cause a lot of waste of resources, which will greatly increase the operation of the enterprise. Costs in turn increase the economic pressure and market resistance of enterprises. As a hidden safety hazard, this problem will greatly affect the safe and stable operation of power transformers, and in severe cases, it may cause the inability of machinery and equipment to operate. It should also be noted that the failure will also have an impact on the service quality of power companies, and will have a major negative impact on the provision of safe and scientific services to customers who use electricity.

Transformer is one of the key electrical equipment in power distribution station. Transformer can solve the heat dissipation problem of large space heat pipe and the problem of high working voltage insulation layer and is widely used. However, the common problem of oil leakage in the operation of transformers seriously endangers the safe operation of the transformer. So can the oil leakage of the transformer still be used? How to deal with it? Let’s take a look.

Let’s first look at the consequences of transformer oil leakage:

1. Transformer oil leakage not only seriously affects the appearance, but also causes economic losses due to the need to shut down the transformer to eliminate leakage.

2. Oil leakage will seriously interfere with the operation and maintenance personnel’s monitoring and judgment of the sealing condition in the transformer oil conservator and the correctness of the oil level indicator.

3. After the oil level is lowered due to leakage, the live joints, switches, etc. may operate without oil insulation, which may cause breakdown, short circuit, burnout, and even equipment explosion.

4. After the transformer oil leaks, the fully sealed transformer will lose its sealing state, and the oil-paper insulation will easily suffer from the intrusion of external air and moisture, which will reduce the insulation performance, accelerate the aging of the insulation, and affect the safe and reliable operation of the transformer.

How do you stop a transformer from leaking oil?

A power supply company’s transformer spool leaked oil. Most of the spool valve stem seal failures caused serious oil leakage.

Due to the special working environment of the transformer, it was not allowed to shut down for a long time, so it could not meet the needs of replacing new parts.

The use of Soleil carbon nano polymer material technology is currently a more effective way to solve transformer oil leakage.

Its main feature is that some leakage points can be managed without shutdown without any impact on the transformer casing itself and the transformer oil.

Specifications and Features of 2000 kVA Pad-mounted Transformers

Delving into the Details: What Makes a 2000 kVA Transformer Stand Out

The 2000 kVA pad-mounted transformer is a robust and versatile piece of equipment, designed to handle substantial electrical loads with ease. Here’s a closer look at its key specifications and features:

Core Specifications:

  • Capacity: The transformer’s 2000 kVA rating reflects its ability to handle a high power load, making it suitable for a range of applications, from industrial complexes to large commercial setups.
  • Phase: These transformers are typically three-phase units, which means they can efficiently distribute three-phase electrical power, commonly used in larger commercial and industrial environments.
  • Voltage Levels: The 2000 kVA transformers are designed to work with various input and output voltage levels, adaptable to different power grids and usage requirements.

Design and Construction:

  • Pad-mounted: This design feature implies that the transformer is mounted on a concrete pad and enclosed in a lockable, tamper-proof cabinet. This setup not only ensures safety but also facilitates easy maintenance and reduces the risk of environmental damage.
  • Cooling Systems: Given their capacity, these transformers often come equipped with advanced cooling systems to manage the heat generated during operation, thereby enhancing efficiency and longevity.

Comparing with Similar Models:

  • 2000 kVA vs. 1500 kVA Transformers: While both serve similar functions, the 2000 kVA model offers higher capacity, making it more suitable for larger-scale applications. The choice between the two often depends on the specific power needs and future scalability of the project.

Nameplate Information:

  • The transformer’s nameplate provides crucial information like voltage ratings, phase, capacity, and other electrical characteristics. It’s a key reference point for installation, maintenance, and compliance with safety standards.

Features Adding to Efficiency and Safety:

  • Built-in Safety Mechanisms: To ensure safe operation, these transformers come with features like pressure relief devices, temperature gauges, and fault protection systems.
  • Noise Reduction Features: Modern 2000 kVA transformers are designed to operate quietly, minimizing noise pollution, a significant factor in urban and residential areas.

The Takeaway

The 2000 kVA pad-mounted transformer is a powerhouse, engineered for efficiency, safety, and versatility. Understanding these specifications is crucial for anyone involved in their selection, installation, or maintenance. With their robust design and advanced features, these transformers are well-equipped to meet the demands of modern electrical distribution needs.

Power Supply Wiring Diagram and Installation of 2000 kVA Pad-mounted Transformers

Installing a 2000 kVA pad-mounted transformer is a critical task that requires meticulous planning and adherence to technical standards. This section aims to guide you through the essential aspects of installation, emphasizing the importance of power supply wiring diagrams.

Power Supply Wiring Diagrams: A Blueprint for Success

  • Wiring Diagram Essentials: Wiring diagrams for 2000 kVA pad-mounted transformers provide a detailed representation of the electrical connections and circuitry. These diagrams are crucial for ensuring that the installation is done correctly and safely.
  • Interpreting the Diagrams: Understanding these diagrams requires knowledge of electrical symbols and circuit design. They show the arrangement of various components, like switches, circuit breakers, and connections to the power grid.

Installation Guidelines:

  • Site Preparation: Choosing the right location for the transformer is vital. It should be easily accessible for maintenance, have adequate clearance from structures, and be in a location that’s safe from flooding or other environmental hazards.
  • Mounting on the Pad: The transformer should be securely mounted on a concrete pad, which provides a stable and level base. The pad’s specifications must comply with weight and size requirements of the transformer.
  • Connecting to the Power Grid: This involves intricate electrical work, connecting the transformer to the primary and secondary power lines. It’s imperative that only qualified electrical professionals undertake this task.

Safety and Compliance:

  • Adherence to Standards: Installation must comply with local electrical codes and standards, including those specified by the National Electrical Code (NEC) and local utility companies.
  • Safety Precautions: Implementing proper safety measures during installation is non-negotiable. This includes ensuring that the transformer is de-energized during installation and that all personnel are equipped with appropriate safety gear.

Post-Installation Checks:

  • Inspection and Testing: After installation, a thorough inspection and testing of the transformer are essential to confirm that it’s functioning correctly and safely.
  • Documentation and Record Keeping: Keeping detailed records of the installation process, including the wiring diagram and any deviations from the original plan, is crucial for future maintenance and troubleshooting.

Conclusion: Ensuring a Seamless and Safe Installation

The installation of a 2000 kVA pad-mounted transformer is a complex but manageable task when approached with the right knowledge and tools. Detailed wiring diagrams, adherence to safety standards, and careful planning are the keystones to a successful installation. Always remember, the safety and efficiency of the transformer depend significantly on the precision and quality of its installation.

In-Depth Analysis of Pricing for 2000 kVA Pad-mounted Transformers

Decoding the Cost: A Comprehensive Look at Pricing Dynamics

When considering the purchase of a 2000 kVA pad-mounted transformer, understanding its pricing is essential. This section aims to provide a more detailed analysis of the factors that influence cost, offering practical insights for potential buyers.

Detailed Pricing Factors:

  • Material and Construction Costs: High-quality materials such as copper windings, robust insulation, and durable housing significantly impact the price. The choice between aluminum and copper windings, for instance, can affect both cost and performance.
  • Cooling System Type: Transformers are equipped with different cooling systems (like ONAN, ONAF, OFAF), each varying in complexity and efficiency, thereby influencing the price. Advanced cooling systems that enhance longevity and efficiency might add to the cost.
  • Energy Efficiency Ratings: Transformers with higher energy efficiency ratings, often mandated by regulations like DOE2016 in the USA, can be more expensive initially but offer long-term savings in operational costs.

Realistic Price Range and Examples:

  • Basic vs. Advanced Models: A standard 2000 kVA pad-mounted transformer might start at around USD 20,000 to 30,000. However, models with advanced features like enhanced cooling, remote monitoring capabilities, or specialized environmental protection can range upwards of USD 40,000.
  • Regional Price Variations: Prices can vary based on location due to factors like transportation costs, local market demand, and regional manufacturing differences. For example, prices in North America might differ from those in Europe or Asia due to differing standards and market conditions.

Customization and Additional Costs:

  • Customization Impact: Specific customizations like unique voltage requirements, special enclosure ratings (e.g., NEMA 3R for outdoor use), or additional safety features can increase the price. A custom-designed transformer can cost significantly more than standard models.
  • Installation and Accessories: The price often excludes installation costs and additional accessories like bushings or surge arresters. These can add considerable expense to the overall project.

Practical Tips for Potential Buyers:

  • Request Detailed Quotations: Engage with multiple manufacturers or distributors to get itemized quotes. This helps in understanding the cost breakdown and comparing options more effectively.
  • Consider Total Cost of Ownership: Evaluate not just the purchase price, but also long-term operational costs like energy efficiency, maintenance requirements, and potential downtime.

Conclusion: Navigating the Market with Informed Decisions

Understanding the nuanced pricing of 2000 kVA pad-mounted transformers is key to making an informed purchase decision. By considering detailed factors such as material quality, cooling systems, energy efficiency, and customization, buyers can better gauge the true value and long-term benefits of their investment.

Operational Parameters and Capacity of 2000 kVA Pad-mounted Transformers

Mastering the Mechanics: Understanding Performance and Limitations

The 2000 kVA pad-mounted transformer is a powerful unit designed for robust performance. This section delves into its operational parameters and capacity, providing practical insights for users to understand its capabilities and limitations.

Cable Sizing for 2000 kVA Transformers:

  • Determining Cable Size: The cable size for a 2000 kVA transformer depends on factors like the transformer’s voltage level, distance from the load, and the type of load it serves. For example, a 2000 kVA transformer at 480V would require cables capable of handling approximately 2400 amps.
  • Practical Guidelines: It’s advisable to consult with an electrical engineer for precise calculations, as undersized cables can lead to losses and overheating, while oversized cables can be unnecessarily costly.

Transformer’s Capacity to Power Houses:

  • Supplying Residential Areas: To estimate how many houses a 2000 kVA transformer can supply, one must consider the average household electricity consumption. Assuming an average household uses about 1 kW, a 2000 kVA (or 2000 kW) transformer could theoretically supply around 2000 homes. However, practical factors like peak demand and distribution losses must be accounted for, reducing this number.

Amperage and Power Distribution:

  • Amperage Capacity: The amperage a transformer can handle is a function of its kVA rating and voltage. For instance, a 2000 kVA transformer at 480 volts can handle around 2400 amps.
  • Distribution Considerations: Properly distributing the load across the transformer’s phases ensures balanced operation and prolongs its lifespan.

Calculating Power Consumption:

  • Setting Up a Transformer: To calculate the power consumption for setting up a transformer, factors like the transformer’s efficiency, the load it will serve, and operational hours must be considered. For a 2000 kVA transformer, the actual power consumption can be calculated using the formula: Power (kW) = Voltage (V) × Current (A) × √3 (for three-phase) × Power Factor.

Building a Step-Up Transformer:

  • DIY Transformer Projects: Building a step-up transformer (e.g., 12V to 220V, 15kW) requires technical knowledge in electrical engineering. It involves designing the transformer’s core, winding the primary and secondary coils, and ensuring adequate insulation.

kW Output of a 1250kVA Transformer:

  • Calculating Output: The kilowatt output of a transformer is less than its kVA rating due to power factor and efficiency losses. For a 1250kVA transformer with a power factor of 0.8, the maximum kW output would be 1000 kW (1250 kVA × 0.8).

Conclusion: Maximizing Transformer Efficiency and Safety

Understanding the operational parameters and capacity of a 2000 kVA pad-mounted transformer is crucial for efficient and safe usage. Accurate calculations and considerations of practical aspects like cable sizing, load distribution, and power consumption are key to harnessing its full potential.

What is the capacity of a transformer?

The capacity of the transformer is expressed by the apparent power unit kVA (kilovolt-ampere) to illustrate the size of the transformer output capacity.

Various loads, such as motors, are expressed in active power kW (kilowatts) to illustrate the size of their output power.

In addition to converting electrical power into mechanical power, the motor also needs a certain amount of reactive power during operation.

Therefore, the transformer must provide active power to the motor as well as reactive power.

Active power refers to the power that converts electrical energy into mechanical energy, heat energy, light energy, etc., which is the energy actually consumed;

While reactive power only forms a magnetic field in the motor, allowing the motor to run and perform external work, because the principle of the motor is The energized conductor is subjected to force in the magnetic field, but this part of the power that forms the magnetic field does not actually consume energy and does no external work, so it is called reactive power.

Download Resource