Do you want to know more about 34.5 kv transformers?

DB Transformer

35 kV class transformers find application in power distribution systems. This category encompasses transformers rated at voltages ranging from 33 kV to 35 kV, which includes 33 kV, 34.5 kV, and 35 kV transformers. Today, I will guide you toward a more profound comprehension of these transformers, encompassing their diverse types, essential accessories, meticulous testing procedures, and more.

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What is a 34.5kV transformer?

The 34.5KV value here is a transformer with a high-voltage input voltage of 34.5KV, including some common single-phase transformers, three-phase oil-immersed transformers, and dry-type transformers.The 34.5kv transformer has many specifications of capacity such as: 50kVA, 100kVA, 315kVA, 500kVA, 750kVA, 1000kVA, 1500kVA, 2000kVA, 2500kVA, 3000kVA, 4000kVA and 5000kVA.

You may be interested:  The Basic Guide of 500kVA Transformer

Is 34.5 kV medium voltage?

Yes, it belongs to the medium and low voltage classes. Here we are talking about the standard line voltage representation.

Learn more: The Ultimate Guide to Electric Transformer

 

What are the types of 34.5kv transformers?

34.5 kv transformer typesIn the power market, there are many types of 34.5kv transformers, such as 3-phase pad mounted transformer, single phase pad mounted transformer, cast resin dry type transformer, single pole mounted transformer, skid substation transformer, and distribution transformers.

 

Select voltage class and distribution point The networks a user can connect to depend on the type, size, and operational requirements of users' installation and requirements and features part of the distribution network involved. These choices are made by dealers based on the data listed below.

 

1. The size of the installation must be compatible with network operating standards. Generally speaking, Voltage curves, selectivity, and use of protection The finished line and transformer must be evaluated.

 

2. The location of surrounding loads in both layout's Current and planned networks.

 

3. Adjacent network characteristics.

 

4. Any generator contribution to short circuit Taking into account all the contributed power of the device

(generators, motors, etc.).

 

5. Introduced disturbance levels (rapid changes, harmonics, flicker, voltage asymmetry) by the load, Whether active or passive, it must be so Not exceed the level specified.

 

6. User requirements for service continuity.

 

7. The user's requirements for slow changes and voltage dips, Short circuit power, and voltage quality.

 

8. Develop the network to meet the above requirements. Connectable power indicator.

 

Read my article on 5+FAQ About 15kV Transformer

 

34.5kV Three Phase Pad Mounted Transformer

So here we mainly introduce the three-phase pad mounted-type transformers commonly used in the American market. To help you better understand what parameters and performance requirements are included in the transformer under 34.5KV voltage:

34.5 kv 2500 kva transformer
The transformer shall be three-phase, self-cooled, Liquid Filled Pad-Mounted, 65°C temperature rise rated OA, suitable for outdoor service.

 

The insulating fluid shall be vegetable-based with a 300 °C fire point. It shall be biodegradable.

 

The 34.5KV transformer shall be capable of rating continuous kVA at temperature rise and ambient conditions listed in the attached 34.5KV Data Sheet.

 

34.5KV Transformer primary winding shall be delta connected with four (4) 2.5% taps, two above and two below rated primary voltage. Tap changer shall be for de-energized operation.

 

The 34.5KV transformer shall be provided with a primary and secondary BIL as indicated in the  Data Sheets.

When specified in the  Data Sheets, the 34.5KV transformer secondary winding shall be wye connected with the secondary neutral brought out for connection to a grounding resistor. In all other cases, the transformer neutral shall be solidly grounded.

 

Each 34.5KV transformer shall have an impedance.

Each 34.5KV transformer is to have provisions for the future addition of fans to achieve an OA/FA rating.

A flange shall be provided on the end wall of the tank for attachment to the incoming line compartment. The flange shall be located on the left when facing the front of the transformer.

A flange shall be provided on the end wall, opposite the high-voltage flange, for attachment to the low-voltage air-filled terminal compartment.

 

Read more: 3 Phase Pad Mounted Transformer-Daelim Belefic

 

34.5kV Three Phase Pad Mounted Transformer Accessories

pad mounted- ransformer accessoriesAccessories shall include: 

Provision for lifting, jacking, and rolling.

Stainless Steel diagrammatic nameplate.

Suitable bolted hand-hole cover

Upper filter press connection, threaded cap, or valve.

Magnetic liquid level gauge with alarm contacts (71).

Combination drains the Bottom Filter /Press Connection valve with the sampler.

Pressure relief device.

Dial type thermometer (26T) with two over-temperature alarm contacts.

Vacuum/pressure gauge.

NEMA ground pads (two minimum on opposite ends), copper faced, with drilled and

tapped holes for purchaser's connection of ground lead. The vendor shall provide terminals for the connection of the customer’s ground cables.

 

Keep reading: What are the standard accessories for a Pad-mounted Transformer?

 

34.5KV Transformers to be Core Form Construction provided with Copper /aluminum windings.

Insulation Class for resistive temperature rises to be defined transformers are to be provided with an Automatic Gas Seal system complete with regulators, gauges, manifolds, etc.

34.5KV Transformers shall be capable of operating above-rated voltage or below-rated frequency Transformers shall be designed and constructed to be completely self-protected by their ability to withstand the external short circuits as defined.

34.5kV Transformers shall be furnished with non-corrosive diagrammatic nameplates permanently attached with non-corrosive hardware. The nameplate shall include the name of the manufacturer, the location of the manufacturer, and the testing performed.

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34.5kV Three Phase Pad Mounted Transformer Factory Tests

So what transformer factory tests will be included?pad mounted transformer testing

Resistance measurements.

Ratio tests.

Polarity and phase-relation tests.

No-load loss and excitation current.

Impedance and load loss.

Applied potential tests.

Induced potential tests.

Tank leak tests.

Dielectric tests.

Impedance Voltage Test

Impulse Test

 

Get it now: How to test a power transformer?

 

At the same time, The LV section shall consist of a full-height air-filled terminal compartment, closely coupled to the 34.5KV transformer.

 

Compression lugs shall be provided.

Clamp-type terminals shall be provided for ground cables.

Bushings shall be wall-mounted porcelain with a copper conductor.

 

And for more on 34.5kV transformer Drawings :

The manufacturer of each transformer design shall submit drawings for review and approval by the engineering department before items are purchased by the Corporation. The drawings shall detail dimensions, weights, and nameplate data.

 

Guarantees: The manufacturer shall guarantee that the transformer(s) supplied shall be in accordance with all requirements of

this specification and shall supply factory test data to support this.

 

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34.5kV Three Phase Pad Mounted Transformer Losses And Efficiency

34.5 kv transformerTransformer Losses & Efficiency

The manufacturer shall provide the following power loss information for each size and design:

1. Core loss at no load in watts at 105 % load and rated voltage, corrected to 85°C.

2. Load loss (Copper) in watts, corrected to 85°C under full load conditions.

 

And for last on 34.5KV transformer Shipping & Storage Requirements :

All 34.5kv transformer units shall be shipped on palettes, strapped down by their lifting hooks, and have all cabinet doors securely closed for marine shipment.

The palette shall also be suitable for lifting with a forklift equipment and have no part of the unit hanging over the palette area.


 

And with more,34.5KV Transformers shall comply with the latest revision of ANSI C57.12.26, except where it conflicts with the specific requirements of these specifications.

All ANSI standards contained in the specifications refer to the latest revision.

 

34.5kv Transformer shall be three-phase, pad-mounted distribution type, 60 hertz, liquid immersed, self-cooled, suitable for outdoor service.

The transformer shall be rated 34500 volts, 60 hertz, and 150 kV BIL.

 

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Two 2½% taps above and below rated high voltage and preferred, but transformers with other or no taps will be considered. The transformer shall have an average winding rise not exceeding 65 degrees Centigrade. KVA ratings shall be as specified in the proposal section at the end of this

schedule.

 

The preferred transformer shall have six primary bushings wells suitable for use with 600-ampere load break bushing inserts. Primary connections shall be arranged for loop feed. Transformers with three primary bushings (radial) will also be considered. The transformer shall have three insulated secondary bushings and one grounded secondary neutral bushing. Secondary bushings shall have spade-type terminals with NEMA standard twelve (12) hole spacing. Secondary terminals shall be braced for added support. Alternate secondary bushings will be considered.

 

The transformer shall be Delta/WYE connected, with the internal grounding of the primary neutral, and shall have a three/five-legged core or other means of avoiding tank heating due to third harmonics.

 

The transformer shall be furnished with a parking stand for each primary bushing.

The transformer shall be equipped with three primary liquid-immersed fault-sensing expulsion type load break fuses in series with internal current-limiting fuses, with provisions for hot stick removal. The transformer shall also be equipped with a pressure-vacuum gauge and a pressure relief device. The tank will be constructed to withstand a minimum of 12 psig with rupture.

 

 

S - 1Transformer shall be the dead-front primary type with separate high- and low-voltage compartments. The high-voltage compartment shall be fastened from inside the low-voltage compartment, and the low-voltage compartment shall have provision for padlocking. The unit shall be suitable for installation without a fence or other protective enclosure.

 

The transformer shall have a complete nameplate inside and outside the low-voltage compartment, an external tap changer handle (if applicable), provision for tank grounding, and provision for bolting to a foundation pad. The transformer shall conform to the requirements of ANSI Standard

C57.12.22 except where the standards conflict with the requirements of these specifications.

 

The unit shall be regular in the outline with no projection other than lifting lugs and door handles.

 

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What are the standard sizes of 34.5kV transformer?

Here we still introduce the size of the pad mount transformer for a better understanding. Here our engineers will design according to the American standard and the actual installation environment of the user. Here you can refer to a 34.5KV 2500kVA pad-mounted transformer outline drawing for a more intuitive image. To the height depth and width of the transformer and the dimensions of some interior fittings.

 

The size of the 34.5kv transformer is also different for different capacities. The larger the capacity of the transformer, the larger the size, the heavier the weight, and the higher the price.

standard sizes of 34.5kV transformer

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34.5kV Transformer For Sale

Daelim is a professional pad-mounted transformer manufacturer in China, with rich experience in overseas transformer design, production, and export. Therefore, 34.5kv transformers can be customized according to your needs and technical requirements. It is also one of the few transformer manufacturers in China with UL listing and certificates. 34.5kV transformers are sold to America, Canada, and many other North American countries

small substation transformersingle phase transformerpad mounted transformer

Try for free: How To Purchase 3000kVA Transformer In USA & Canada?

 

The maximum capacity of 34.5kV pad-mounted transformers produced by Daelim can reach 10MVA, and your special technical requirements can also be met. Because Daelim has designed, produced, and sold many special transformers.

 

The production time of the Daelim transformer is about 6-8 weeks, with the ability of fast delivery, and the price is also competitive. With SGS, UL, cUL, CSA, CNAS, and other certificates. There are many transformer project cases in North American markets such as the United States and Canada. Cooperate with internationally famous brands Eaton, Amazon, and other customers. If you have a transformer project, contact Daelim to provide you with the best production plan, perfect solution, and detailed price list.

WELCOME INQUIRY MORE AND CLICK HERE TO ASK FOR MORE DETAILS AND PRICES ON THE 34.5KV TRANSFORMER.

 

What Is 33kV Transformer?

33 kv transformerA 33kV transformer is a medium-voltage transformer designed to handle electrical power at a voltage level of 33 kilovolts. It is commonly used in power transmission and distribution systems to step down high voltage to lower levels for commercial and industrial use. The 33kV transformer plays a crucial role in ensuring efficient and reliable electricity distribution.

Power can be greatly reduced in voltage from 33kV to a more manageable level for use in homes, companies, and other buildings. 

One disc insulator can safely carry 11 kilovolts down a transmission line. When using three disc separators per phase, the maximum allowable energy for the transmission network is 33kV.

To minimize energy loss, the core of a 33kV transformer is normally built of laminated steel. Windings and insulation are other standard components. 

In general, 33kV transformers are indispensable to the electrical power system because they ensure the safe and effective transmission of electricity from the power plant to the homes and businesses that need it.

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What Are The Applications of 33kV Transformers?

33 kv transformers
33kV transformers are essential components in electrical power distribution systems. 

As mentioned earlier, they serve to step up or step down voltage levels for efficient and safe transmission of electricity. 

A transformer 33kv 415v is widely used in various industries where a stable and reliable power supply is necessary for equipment and machinery to function efficiently. 

  • Manufacturing
  • Mining
  • Petrochemicals

Moreover, they play a crucial role in integrating renewable energy sources. 

They can cater to solar and wind power by converting the voltage generated by these sources to suitable levels for transmission and distribution. 

33 kV transformers, specifically with transformer 33kv 400v specification are also commonly found in substations. 

Other applications include electric railways, where 33kV transformers provide stable and reliable power for train operations. 

In addition to that, 33 kV transformers cater to data centers, hospitals, and commercial buildings that require a steady power supply to support critical systems and equipment.

What Are The Factors Affecting 33kV Transformer Price?

A variety of factors can impact the price of a 33kV transformer, making it important for buyers to carefully consider each aspect before making a purchase. 

These factors include:

A. Power Rating and Capacity

Higher-capacity transformers are usually more expensive due to the additional materials and complexity involved in manufacturing them.

Therefore, as the power rating and capacity of a 33kV transformer increase, so does the price. 

B. Type of Transformer

The 33 kV transformer price varies depending on the type, such as pad-mounted transformers, small substation transformers, or auxiliary transformers.

A typical 33 kV distribution transformer may cost around $20,000 to $30,000. 

At the same time, a customized power transformer with a capacity of 33 kV may cost around $100,000 to $200,000. 

Each type has a different purpose, and their manufacturing process and materials can differ, impacting the cost.

C. Quality and Efficiency

High-quality transformers with better efficiency will generally have a higher price. 

Firstly, high-quality transformers are primarily made with superior materials and components. 

For instance, a transformer 33kv 415v may have copper windings rather than aluminum windings, which are more efficient but also more expensive in terms of the 33 kV transformer price. 

At the end of the day, although these design features may increase the 33 kV transformer price, the energy savings over time can justify the higher initial cost.

D. Voltage Regulation

Transformers with advanced voltage regulation such as transformer 33kv will typically be more expensive.

However, the addition of advanced voltage regulation capabilities requires more sophisticated and complex components, such as the OLTC mechanism itself.

These components are more expensive than the basic components of a standard transformer which could add to the 33 kV transformer price.

E. Cooling System

A 33 kV transformer can be generally cooled using different methods, such as oil-immersed, air-cooled, or forced-air cooling systems. 

The choice of cooling system impacts the transformer's overall efficiency and performance, and the overall 33 kV transformer price.

F. Additional Features and Accessories

33 kV transformer with added features such as on-load tap changers, remote monitoring systems, or built-in protective devices will generally be more expensive than their basic counterparts. 

These features enhance the 33 kv transformer's functionality and reliability.

G. Manufacturer and Brand

The reputation of the manufacturer and the brand plays a significant role in determining the 33 kV transformer price. 

Well-established brands that are highly known for their quality and reliability tend to command higher prices.

H. Market Demand and Supply

The market dynamics of demand and supply can also influence the price of a 33kV transformer. 

High demand for transformers or a scarcity of raw materials can lead to increased prices, while low demand or an oversupply of transformers can result in lower prices.

Seasonal fluctuations and economic conditions can also impact demand and supply, further affecting a 33 kV transformer price.

Try for free: The Ultimate Guide to Oil-Cooled Transformers

What Are The Price Range and Variations in 33kV Transformers?

Generally, the price range for a 33kV transformer can vary from a few thousand dollars to hundreds of thousands of dollars.

The specific 33kV transformer price may also depend on the technical specification, the country or region where it is generally purchased, and the local market conditions.

Standard Pricing

Standard pricing refers to the price that a customer would typically expect to pay for a product or service based on the current market conditions.

Here are some examples of the standard pricing of 33kV transformers globally.

  • Oil-immersed 33kV transformer can cost between $20,000 to $30,000.
  • Dry-type 33kV transformer can cost between $35,000 to $50,000.
  • Gas-insulated 33kV transformers can cost between $70,000 to $100,000.
  • Customization and Special Requirements

Customizing a 33kV transformer is crucial in ensuring that it meets the specific requirements of the application it is mainly designed for. 

To customize your 33kv transformer specifications or a transformer 33kv to 400v, adding additional taps can cost between $3,000 to $8,000. 

This will depend on the number of taps required and the complexity of the modification.

On the other hand, changing the voltage rating of the transformer to meet specific requirements can cost between $5,000 to $15,000 depending on the extent of the modifications required.

Used and Refurbished Transformers

Used and refurbished 33kV transformers are available for purchase from a variety of sources, including online marketplaces, auction websites, and specialized dealers. 

To provide an example, a used 33kV transformer in the US and in good condition may cost around $50,000.

Whereas, a refurbished 33kV transformer in Asia with the same 33kv transformer specifications could cost upwards of $20,000. 

When considering the purchase of a reconditioned transformer, it is crucial to have a comprehensive understanding of its appearance, electrical and mechanical performance, as well as its expected service life. This knowledge is vital to prevent early failures after deployment, which can result in substantial economic losses. By ensuring a thorough assessment of these factors, potential risks can be mitigated, and the transformer can be selected with confidence, leading to a more cost-effective and reliable solution.

Reading more: Find the Best 250 kVA Transformer Price

Market Trends and Fluctuations

One factor that can influence market trends and fluctuations is the overall demand for electricity and power infrastructure. 

When electricity demand is high, as during periods of economic growth or increased industrial activity, there may be an increase in demand for transformers.

As a result, it can all drive up the 33kV transformer price.

Comparison of Different Brands and Manufacturers

When it comes to transformers, there are numerous brands and manufacturers in the market that offers a variety of selling price.

ABB offers a wide range of 33 kV transformers and 66 kV transformers at price for a quality cost of $13,152- $120,000

At the same time, Siemens offers a 33 kV transformer price of $12,800-$100,000

At Daelim, we are pleased to provide you with competitive pricing options for 33 kV transformers, ranging from $8,500 to $58,000. However, to ensure accurate pricing tailored to your specific transformer specifications, we encourage you to share your requirements with us. By sending us your specific needs, Daelim will promptly provide you with precise quotations, ensuring transparency and enabling you to make informed decisions about your transformer investment.

In addition, Daelim can deliver your 33kV transformer in a span of eight to ten weeks.

Tips for Purchasing 33kV Transformers

There are several things to think about while searching for a 33kV transformer to make sure you get the right one for your needs.

Tip No. 1. Define Power Requirements and Load Capacity

This involves determining the amount of power that you need to run your equipment. 

As a general rule, the load capacity of a transformer is usually determined by its kVA rating, which is a measure of its apparent power output. 

In the case of a 33 kVA transformer, its load capacity is 33,000 VA or 33,000/√3 ≈ 19,080 W for a three-phase system.

It is important to ensure that the load capacity of a transformer is greater than the total power requirement of the load it is generally connected to, to avoid overloading the transformer. 

Tip No. 2. Determine Desired Features and Accessories

You should consider the application of the 33kV transformer, whether it will be highly used indoors or outdoors, and in hazardous or non-hazardous locations. 

In addition, you should take note of the efficiency of the transformer, which can affect energy savings and its overall performance.

Accessories are additional components that can be potentially added to a 33kV transformer to enhance its functionality, safety, and reliability. 

Tip No. 3. Research and Compare Brands and Manufacturers

Start by researching different transformer brands to get an idea of the products and features available. 

Look for manufacturers with a proven track record of quality and reliability, and consider factors such as customer reviews, certifications, and industry reputation.

Compare the 33kv transformer specifications and 66 kV transformer, including voltage ratings, power capacity, efficiency, voltage regulation, and other features.

With this method, it can help ensure that you have access to the resources you need to keep your transformer operating reliably over its lifetime.

Tip No. 4. Consider Quality and Reliability

A high-quality 33 kV transformer will typically have certifications from recognized organizations such as ISO, UL, CSA, or CE. 

These certifications indicate that the transformer has been independently tested and verified to meet specific quality and safety standards.

Research the manufacturer's reputation in the industry and look for reviews from customers or other industry professionals. 

Search for manufacturers with a proven track record of producing high-quality, reliable products.

Then evaluate the materials and components. The quality of the materials and components used in a 33 kV transformer can affect its performance and reliability. 

Tip No. 5. Request Multiple Price Quotes

Requesting multiple price quotes is a good way to compare different 33 kV transformer prices and 66 kV transformer prices.

Start by identifying potential suppliers of 33kV transformers, transformer 33kv to 400v, and transformer 33kv 415v, including manufacturers, distributors, and resellers. 

Request quotes from several suppliers to ensure that you get a fair price for the transformer. 

Be sure to ask for a breakdown of the costs, including any additional fees or charges.

Then compare the quotes from the different suppliers, taking into account the price, quality, and other factors such as after-sales support, warranty, and delivery times. 

Lastly, negotiate the 33 kV transformer price and 66 kV transformer price.

Once you have received quotes from multiple suppliers, you may be able to negotiate the price to get a better deal. 

Be sure to discuss any concerns or questions you have with the supplier before finalizing the purchase.

Tip No. 6. Evaluate After-Sales Support and Warranty

Look for a comprehensive warranty that covers the 33 kV transformer

 for defects in materials and workmanship for a specified period. 

The warranty should cover the repair or replacement of any defective parts and should be always backed by the manufacturer.

Next is to read the terms and conditions of the warranty carefully to ensure that you understand what is generally covered and what is not. 

Then look for any exclusions or limitations that may affect your warranty coverage.

In addition, some manufacturers provide training and resources to help you maintain and troubleshoot your transformer.

Look for manufacturers that offer training programs or resources, such as user manuals or online support forums, to help you maximize the performance and reliability of your 33 kV transformer. 

Learn more: How to purchase a 2 MVA power transformer?

Where Can You Buy 33 kV And 66 kV Transformers?

You can purchase a 33kV transformer and 66 kV transformer here at Daelim. 

As a manufacturer, we also invest in our innovative research and development facilities so that we may provide our customers with a greater range of high-quality transformers.

As a reliable manufacturer, both our 33kv and 66 kV transformers are readily available for use in electrical distribution.

35 kV Transformer

35 kv transformer
The picture above is a 35 kV transformer designed and produced by Daelim Transformer, with a capacity of 16 MVA. The "35 kV, 16 MVA transformer" refers to a high-voltage transformer with a primary voltage rating of 35,000 volts (or 35 kV) and a power capacity of 16 megavolt-amperes (MVA). This type of transformer plays a vital role in power distribution systems, converting electricity between different voltage levels for efficient transmission and distribution to homes, businesses, and industries. It is a key component in maintaining a stable and reliable electrical supply across the grid.

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