1 MVA Transformer: The Ultimate FAQs Guide - Daelim

What is a 1MVA Transformer?

A 1 MVA transformer is a type of transformer that offers 1,000 KVA of power. It does this by converting one alternating current (AC) into another using the same voltage. However, it does this while using 180 degrees out of phase.

1 MVA transformers are used in various applications where there is a need to transfer electrical energy between the generator and the primary circuits of distribution.

There are two (2) types of 1 MVA transformers: dry-type transformers and oil-filled transformers. Dry-type 1 MVA transformers are typically used in indoor applications, while oil-filled 1 MVA transformers are used in outdoor applications due to their better cooling properties.

Read more: The Ultimate Guide to 50kVA Transformer

What is a 2MVA Transformer?

A 2 MVA is a higher capacity transformer used for larger applications. 2 MVA transformers have the same basic function as 1 MVA transformers—they can transfer high electrical energy from one circuit to another or multiple circuits. That means a 2 MVA transformer can handle twice the amount of power.

2 MVA transformers also have higher current and voltage than 1 MVA transformers. That's why 2 MVA transformers are used in high-power applications such as industrial plants, data centers, and large commercial facilities.

Learn more: The Basic Guide of 500kVA Transformer

What’s the 1 MVA Transformer Price?

The 1 MVA transformer or 1000 KVA transformer price depends on certain factors such as the type of 1 MVA transformer, the manufacturer, the features, and the level of customization.

For example, a 1 MVA 3-phase dry-type distribution transformer can cost between $12,800 to $18,410. Meanwhile, a 1 MVA 3-phase oil-filled distribution transformer can cost between $8,800 to $22,600.

For 1MVA transformers, the prices of different types, design and production standards, technical requirements, materials, and accessories requirements vary greatly, so it needs to be determined according to the specific technical parameters and design requirements of the transformer.

To determine a 1 MVA transformer cost budget, it's best to consult a professional who can help you choose the right 1 MVA transformer for your specific application. You can also request quotes from different 1 MVA transformer manufacturers like Daelim. In addition, Daelim offers a free quotation on a 1 MVA transformer model, so don't hesitate to request one.

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How Big is A 1000 kVA transformer?

A 1000 KVA transformer is a 1 MVA transformer in size and weight. 1 MVA transformers typically weigh between 6172 to 7716 pounds (2,800 to 3500 kilograms) and have dimensions of W x D x H =5 in. x 64in. x 68 in.

Other 1 MVA transformer variants may have slightly different dimensions due to the type of 1 MVA transformer. For example, 1 MVA pad-mounted transformers are typically smaller in size with dimensions of W x D x H = 89 in. x 59 in. x 64 in.

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How Big is a 750 KVA Transformer?

A 750 KVA transformer is a bit smaller in size and weight than a 1 MVA transformer. The average weight of a 750 KVA transformer is 4,409 pounds (lbs.), which is about 2,000 kilograms (kgs.). The dimensions of a 750 KVA transformer are D x W x H = 57 in. x 88 in. x 64 in.

At 2,082 amps, a 750 KVA transformer can be used for commercial and industrial applications. Transformers with bigger KVA sizes tend to handle more amps. This means that a 750 KVA transformer can power more devices than a 500 kVA transformer.

Read my article on The Ultimate Guide to the 300kVA Transformer

How Do I Choose a Transformer Size?

The right transformer size for your application depends on various factors, such as the amount of power you need to transfer, the type of transformer, the application, and the environment. For example, a 1 MVA dry-type transformer is typically used in indoor applications, while a 1 MVA oil-filled transformer is used in outdoor applications.

Determining the transformer's kVA will require you to calculate the load current. You’ll get the value you’re looking for after multiplying it by the voltage. For example, if you have a 1,000-volt (V) load with a current of 1,000 amperes (A), you will need a 1 MVA transformer. To determine the maximum transformer current, divide the 1 MVA transformer rating by the secondary voltage. In this example, 1,000 ÷ 1,000 = 1 ampere.

By following this formula, you can determine the right transformer size you need for your specific application without overloading or damaging the transformer.

As for the high and low voltage of the transformer, it needs to be determined according to the power grid you want to connect to. Usually, the transformer of the same capacity, the higher the voltage, the larger the size.

Read more: The Ultimate Guide to Electric Transformer

How Much Does a 1MVA Transformer Weight?

The actual weight of a 1 MVA transformer depends on the type of transformer. For example, 1 MVA dry-type transformers typically weigh between 6,600 lbs. (3000 kgs.) to 4,000 lbs. (1814 kgs.). Meanwhile, 1 MVA oil-filled transformer can weigh up to 7,275 lbs. (3,300kg.).

The 1 MVA transformer size also varies depending on the manufacturer. For example, 1 MVA transformer from Daelim typically weighs around 7,054 lbs (3,200 kg.). Another factor would include the 1 MVA transformer features such as the type of cooling, the insulation, the winding material, and the tap changer. All these factors can affect the 1 MVA transformer weight.

When choosing the right weight for a 1 MVA transformer, consider all these factors and consult with a transformer expert to avoid any problems. That way, you can be sure to get the 1 MVA transformer that's perfect for your application.

Learn more: A 150 kVA transformer introduction

What is a 3 MVA Transformer?

A 3 MVA transformer is a transformer rated at 3,000 KVA. The primary voltage may be 7.6kV, 13.2kV, 13.8kV, 24.94kV, 34.5kV, 34.5kV, etc., while the secondary voltage is typically 600V, 400V, 415V, 480V, 220V, etc. The 3 MVA transformer can be a step-down transformer or a step-down transformer. When it is a step-up transformer, it means the secondary voltage is lower than the primary voltage; if it is a step-up transformer, then the secondary voltage is higher than the primary voltage. The 3MVA transformer is extensively used in industrial and commercial settings to distribute electrical power. It is purposefully designed to effectively manage large-scale power distribution and accommodate high electrical loads commonly found in these applications.

The approximate weight of a 3 MVA transformer is about 15442 lbs. (7000 kg). Different types of transformers will have different weights, and 3MVA's dry transformers will be lighter than oil transformers. 3 MVA pad transformer mounted dimensions are L x W x H = 81 in. (2080 mm.) x 82 in. (2100 mm) x 74 in. (1900 mm). Different types of transformers have different dimensions.

A three-phase 3 MVA transformer has an impedance rating of 6% at 60 Hertz. The most typical configuration uses a Yd11 connection.

3 MVA transformer has a normal variation in tap voltage is 2x2.5%.

The temperature rise of the windings in a 3 MVA transformer is 65°C.

In most cases, an ONAN system will be sufficient to cool a 3 MVA transformer. It also features an off-circuit tap changer. 

A 3 MVA transformer's core material is often silicon steel, and its tank is typically ANSI or Munsell Green.

In terms of cooling, 3MVA transformers usually have natural air cooling or forced cooling. 3 MVA transformer oil capacity for oil-cooled transformers is typically 2,000 liters.

The 3 MVA transformer can be used for various power applications such as data centers, substations, solar energy, wind energy, Battery Energy Storage Systems, and the like. If you're wondering whether or not to opt for this type of transformer, it's important to consult an expert to assess your needs and determine if the 3 MVA transformer is the right size and technical design for your application.

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How Much For A 3 MVA Transformer Price?

Generally, the 3 MVA transformer price can vary based on the manufacturer. 

For instance, a 3 MVA transformer price from ABB may cost around $100,000, while a similar transformer from a lesser-known manufacturer can cost up to $50,000.

It's possible to spend roughly $100,000 for a 3 MVA power transformer. At the same time, a 3 MVA distribution transformer costs about $80,000 today.

However, a 3 MVA transformer price with advanced monitoring and control systems could cost around $150,000, while a similar transformer without these features may cost you $100,000.

On the other hand, Daelim Belefic offers a reasonable 3 MVA transformer price between $32,700 and $48,900.

 Dry-type and oil-immersed 3 MVA transformers are both available from the Daelim transformer factory.

What Are The Standard 4 MVA Transformer Prices and Features?

As a rough estimate, a standard 4 MVA transformer can cost anywhere from $50,000 to $100,000 or more.

4 MVA transformer features and specifications are as follows:

• Applicable standard: ANSI C57.12.00 
• Frequency: 3 P/ 60 Hz
• Cooling method: ONAN / ONAF 
• Insulating oil: Mineral Oil
• Rated voltage (HV): 13800v 
• Connection: YNd1 
• Efficiency: 99.16%

4 MVA transformer has a length of 106.3 inches (2,699 mm), a width of 130.0 inches (3,302 mm), and a height of 82.8 inches (2,102 mm). 

The oil capacity of the 4 MVA transformer is 420 gallons (1,589 liters), and its total weight is 19,224 pounds (8,720 kilograms).

Why do Transformers Tend to Leak Oil?

There are several reasons why transformers may leak oil. Here are some of them:

Corrosion

The leading cause of transformer failure is corrosion. Corrosion can occur inside the 1 MVA transformer tank and on the exterior. When transformers leak oil, it's often due to corrosion of the tank.

Loose Connections

Another common reason transformers leak oil is due to loose connections. For example, when transformer bushings, gaskets, or other connections are not tightened properly, it can cause 1 MVA transformers to leak oil.

External Leaks

In some cases, transformers may develop external leaks. This is often due to physical damage to the transformer, such as a cracked tank.

Faulty Welds

Another possibility is that transformers may have faulty welds. This can cause transformers to leak oil, especially if the weld is located in a critical area such as the bottom of the tank.

If you notice your transformer leaking oil, it's important to take action immediately. Otherwise, it could lead to further damage or even 1 MVA transformer failure.

How Many Types of 1 MVA Transformer Are There?

1 MVA transformers are classified into two distinct types: dry-type and oil-filled 1 MVA transformers. Dry-type transformers are filled with air while oil-filled 1 MVA transformers are, as the name suggests, filled with oil.

Dry-Type Transformers

Dry-type transformers feature a gaseous insulation system that uses either air or nitrogen. These transformers are hermetically sealed, which means they’re designed to prevent the entry of any external contaminants.

Dry-type 1 MVA transformers are typically used in indoor applications where there’s little to no risk of oil leakage. They’re also more fire-resistant than oil-filled transformers since there's no transformer oil that can ignite in the event of a fire. However, dry-type transformers are typically 15%  to 25%  more expensive than oil-filled 1 MVA transformers.

Oil-Filled Transformers

Oil-filled transformers are the direct counterpart of dry-type transformers. These 1 MVA transformers use oil as insulation and cooling medium. The oil also helps to dissipate any heat that’s generated by the transformer.

Oil-filled transformers are typically used in outdoor applications where there’s a risk of oil leakage. They’re also less expensive than dry-type transformers. However, oil-filled 1 MVA transformers are more fire-prone since the transformer oil can potentially ignite in the event of a fire. What oil-filled transformers do bring to the table is higher standard energy efficiency, as well as a longer lifespan compared to dry-type.

Daelim offers both dry-type and oil-filled transformers that are mainly used in industrial, residential, wind, and solar energy projects. Daelim substation transformers and pad-mounted transformers are oil-filled transformers with feature UL/CSA/IEEE certification. Daelim currently focusing on North America, Australia, and Central South America markets.

How Many Amps is a 1 MVA Transformer Good For?

Determining the amperage a transformer can handle depends on the transformer's capacity and voltage.

The rated current is the current flowing through the winding wire end calculated by dividing the rated capacity of the winding by the rated voltage of the winding and the corresponding coefficient (single-phase is 1, three-phase is √3). Therefore, the rated current of the transformer is the rated current of each winding, which refers to the line current. However, for a single-phase transformer that forms a three-phase group, if the windings are connected in a delta, the rated current of the windings is represented by the line current as the numerator and √3 as the denominator.

Therefore, the calculation formula for the transformer current is as follows:

Three-phase transformer: current = transformer capacity (kVA)/voltage level (kV)/√3

Single-phase transformer: current = transformer capacity (kVA) / voltage level (kV)

For example, if the transformer capacity is 1mva, the high voltage is 13.2kV, and the low voltage is 0.48kV

For 1 phase 1 MVA transformer: I(amp) = 1000kVA/13.2kV

For a three-phase 1 MVA transformer: I(amp) = 1000kVA/13.2kV/√3

From the calculations above, the single-phase 1 MVA transformer current rating is:

The three-phase 1 MVA transformer current rating is:

1 MVA Transformer Data Sheet

Here we take a 1000kVA pad-mounted transformer as an example to see the specific data, including transformer accessories, weight and size, high and low voltage BIL values, tap changer, transformer material, color, temperature, losses and impedance, and other important information.

How Much Power is 1 MVA?

To determine the amount of power of 1 MVA, you will need to know how to convert KVA (kilo-volt amperes) to KW (kilowatt). You can do so using the following formula:

Real Power = 1 kVA × 0.8 = 0.8 kW, where:

1 kVA is the apparent power, and

0.8 is the power factor.

In this example, 1 kVA is equal to 0.8 kW. Therefore, 1 MVA is equal to 800 kW.

How Does 1 MVA Transformers Work?

Electrical transformers with a power rating of 1 MVA can handle loads of up to 1000 kVA. 

This means that the transformer can handle a load of up to 800kw of electrical power at a given voltage level.

In addition to their power capacity, 1 MVA transformers can also be designed to meet specific requirements such as high efficiency, low noise, and compact size. 

A 1 MVA transformer might weigh several tons and be several feet in height, width, and length. 

They are typically constructed with high-quality materials and designed to operate reliably and efficiently over a long service life.

What Are The Applications of 1 MVA Transformer?

A 1 MVA transformer is commonly used in a variety of applications, including:

Data centers: 1 MVA transformers are often used to supply power to data centers, which require a lot of electrical power to run their servers, cooling systems, and other equipment.

Wind farms: These transformers are commonly used to step up the voltage generated by wind turbines before it is usually transmitted to the power grid.

Photovoltaic power plants: 1 MVA transformer that is typically used in PV power plants are highly designed to operate at high-efficiency levels. 

These are all created to withstand the environmental conditions commonly found in outdoor installations, such as high temperatures, humidity, and exposure to dust and debris. 

BESS (Battery Energy Storage System): In this method, 1 MVA transformers are often used to connect battery storage systems to the power grid, allowing excess power to be potentially stored and used during periods of high demand.

Construction industry: In the construction industry, 1 MVA transformers are usually used in commercial and residential areas with better economic development and denser population. Such as New York State, Washington State, and Texas State.

Oil and gas exploration: You can also use a 1 MVA transformer to power drilling rigs, pumping stations, and other equipment used in the exploration and production of oil and gas.

Factories: 1 MVA transformers are mainly applied to power machinery and equipment in manufacturing plants, particularly those with high power requirements such as steel mills or chemical plants.

What Are The Factors Influencing the Price of 1 MVA Transformers?

1 MVA transformer price is mainly influenced by various factors, including design and construction considerations and quality and performance requirements. 

As well as that, they are highly affected by market factors and supplier variations, and some additional costs and considerations.

A. Design And Construction Considerations

When considering the price of a 1 MVA transformer, there are several design and construction factors to take into account. 

Core Material And Design

The most common core material used in 1 MVA transformers is highly laminated steel, which consists of thin layers of steel sheets insulated from each other. 

Then you can see an amorphous metal core, an alloy with a disordered atomic structure. 

1 MVA transformer specification is mainly designed to operate at a specific frequency, which is typically either 50 Hz or 60 Hz depending on the location.

Winding Type And Insulation Materials

Some common winding types used in 1 MVA transformers include concentric winding, sandwich winding, and helical winding.

This winding type involves placing the primary and secondary conductors in concentric layers around the core. 

1 MVA transformer windings are commonly used in medium and high voltage applications.

1 MVA transformer includes insulation materials like Oil-impregnated paper, Epoxy Resin, and Nomex. 

These are all excellent thermal and electrical properties and are often used in high-temperature applications.

Cooling Mechanisms And Efficiency

In a 1 MVA transformer, some of the cooling mechanisms are Natural Air Cooling, Forced Air Cooling, and Forced Oil Cooling.

In most cases, a 1 MVA transformer can be generally cooled by an ONAN system. 

The efficiency of a 1 MVA transformer is mainly affected by the losses in the transformer, including core losses, winding losses, and stray losses. 

Higher-efficiency transformers have lower losses, which results in less waste heat and lower operating costs. 

 B. Quality And Performance Requirements

Generally, the quality and performance requirements for a 1 MVA transformer are critical to ensure safe and reliable operation.

Standards And Certifications

1 MVA transformer must meet relevant international and national standards, such as the International Electrotechnical Commission (IEC) standards, the American National Standards Institute (ANSI) standards , the Canadian Standards Association (CSA) standards or the Department of Energy(DOE efficiency ).

Compliance with these standards ensures that the transformer meets minimum safety and performance requirements.

As a result, standard compliance requires additional testing and documentation, which can increase the 1 MVA transformer price. 

Voltage Regulation And Losses

1 MVA transformer with better voltage regulation typically requires higher quality materials and components to achieve the desired performance. 

For example, transformers with automatic voltage regulation (AVR) or tap-changing capabilities require additional components, such as voltage regulators, which can increase the 1 MVA transformer price.

Higher efficiency transformers like 1 MVA transformers generally have lower losses, which can result in lower operating costs over the transformer's lifetime. 

Short-Circuit Strength And Overload Capacity

1 MVA transformer with higher short-circuit strength requires additional reinforcement and uses higher-grade materials, which can increase the 1 MVA transformer price.

On the other hand, the additional materials and design considerations required to increase the overload capacity of a 1 MVA transformer can increase the cost of the transformer.

For example, a 1 MVA transformer with larger conductors and more robust insulation materials is typically more expensive than 1 MVA transformer with smaller conductors and less robust insulation.

C. Market Factors And Supplier Variations

Market factors and supplier variations can also impact the 1 MVA transformer price, as well as the 4 MVA transformer price and 3 MVA transformer price.

Supply And Demand Dynamics

If the demand for 1 MVA transformer exceeds the supply, the price of transformers may increase. 

Conversely, if the supply of transformers exceeds the demand, the 1 MVA transformer price may decrease.

For instance, following the outbreak of the COVID-19 pandemic in late 2019, the transformer industry faced significant challenges due to labor shortages. This scarcity of workforce resulted in a constrained supply of transformers, leading to upward pressure on their prices.

Raw Material Costs And Availability

The cost and availability of raw materials, such as copper, steel, and insulation materials, can impact the 1 MVA transformer price.

If the cost of raw materials increases, the cost of manufacturing transformers may also increase, which can result in higher prices for transformers. 

Similarly, if the availability of raw materials is highly limited, the cost of obtaining those materials may increase. This may also affect the 1 MVA transformer price.

Competition And Pricing Strategies

If many manufacturers are producing similar 1 MVA transformer specifications, they may compete on price to attract customers. 

On the other hand, if there are only a few manufacturers producing transformers with specific features, they may be able to charge a premium of 1 MVA transformer price.

D. Additional Costs And Considerations

In most cases, there will be some additional costs and considerations that can affect the 1 MVA transformer price.

Transportation, Installation, And Maintenance

For example, the cost of transporting and installing a 1 MVA transformer can be significant. 

1 MVA transformer may require special equipment, such as cranes or trucks, for transportation and installation. 

Therefore, the cost of ongoing maintenance, such as oil changes and insulation testing, should also be highly considered when calculating the total cost of the transformer.

Warranty And After-Sales Support

1 MVA transformer with longer warranties and more comprehensive after-sales support may be more expensive than transformers with shorter warranties and limited after-sales support. 

In general, the after-sales support may include technical support, training, and troubleshooting services, which can add value to the total 1 MVA transformer price.

Customization Options And Special Features

Customization options, such as specific cooling mechanisms, insulation materials, or voltage regulation capabilities, may increase the 1 MVA transformer price. 

Special features, such as noise reduction measures or remote monitoring capabilities, may also add to the 1 MVA transformer price.

As you can see, several additional costs and considerations can affect the price of a 1 MVA transformer. 

Buyers should carefully consider their specific application requirements and consult with manufacturers.

It is best to determine the best options and features for their needs while balancing the cost and performance trade-offs.

How Much Is A 1 MVA Transformer Price?

The price of a 1 MVA transformer can vary significantly depending on various factors such as its type, brand, and features. 

However, to give you a general idea, a new 1 MVA transformer can cost anywhere between $12,000 to $35,000 or more.

It's important to note that the price of a transformer can also depend on the region, market conditions, and supplier. 

Therefore, it's recommended to obtain quotes from multiple suppliers to compare prices and make an informed decision.

With Daelim, you can purchase a high-quality 1 MVA Daelim transformer for between $12,000 and $38,000.

Daelim manufactures 1 MVA pad mounted transformer ,1 MVA transformer skid mounted transformer, and 1MVA dry transformer.

What is an Oil-Type Transformer?

An oil-type transformer is a type of transformer that uses oil for cooling. It's typically used in electrical substations or power distribution systems where high capacity is required. This type of transformer features the coils immersed in oil as its means of cooling and insulating. The oil circulates through a series of ducts and around the core assembly, which is moved through convection.

Oil-type transformers are typically more efficient than air-cooled transformers and have a longer life span. In addition, they are typically more fire-resistant than dry-type transformers.

What is a 4 MVA Transformer?

A 4 MVA transformer is a type of transformer with a capacity of 4,000kVA. They are typically used in high-capacity applications, such as electrical substations or power distribution systems.

1 MVA Transformer Specification

Here are the official specifications of a Daelim 1 MVA transformer:

kVA Rating: 1 MVA

Primary Voltage (HV): 13800v

Secondary Voltage (LV): 220y/127

Type: Loop feed

Installation: Outdoor

Standards: IEEE Std. C57.12.00; C57.12.90; C57.12.34

Model: ZGS-H-1000/ 13800/220y/127

Cooling System: ONAN

Vector Group: Dyn1

Phases: 3

Frequency: 50 Hz

Ambient Temperature: 50°C

Working Temperature：-20°C to +40°C

No Load Losses: 1.15kW

On Load Losses: 10.30kW

Total Losses: 11.45kW

Loss Tolerance Impedance:10% NLL, 6% Total Loss

Impedance: 4%

Tolerance: ±7.5%

Insulation Class (HV): 15kV

BIL (HV): 95kV

Insulation Class (LV): 1.2kV

BIL (LV):30kV

 Where to Purchase A Reasonable 4 MVA, 3 MVA, and 1 MW Transformer?

If you need a high-quality and reasonable 4 MVA, 3 MVA, and 1 MW transformer price, you can always purchase from Daelim. 

It's vital to locate a dependable power transformer manufacturer such as Daelim. When you purchase from us, you can rest assured that you'll receive top-notch service.

Daelim provides the highest overall value to customers since it considers both one-time and ongoing costs.

Daelim makes transformers with ratings of 1 MVA, 4 MVA, and 3 MVA using innovative tools, high-quality components, and novel approaches.

 Daelim takes great care at every stage of production to ensure that our power transformers will survive for many years with minimal upkeep.