15 kV transformer is suitable for high-voltage switch cabinets, high-rise buildings, commercial centers, airports, tunnels, chemical plants, ships, and other important or special environments.

 

Daelim is a professional transformer supplier and we have been working in 15kVA transformer design and production for more than 15 years. We can design according to the requirements of users and provide professional, accurate high-quality transformers.

Get it now: Daelim's International Project Cases

 

Table of contents

1. What is a 15 kV transformer? 2.What are the 5 types of 15 kV transformer?     2-1 15kV 3 phase pad mounted transformer    2-2 15kV oil-immersed transformer    2-3 15kV overhead single phase transformer    2-4 15kV dry type transformer    2-5 15 kV single phase pad mounted transformer 3.How much does a 15kV transformer cost?    3-1 Transformer type    3-2 Transformer capacity    3-3 Winding material    3-4 Transformer accessories    3-5 Transformer efficiency value 4. What is the application of a 15kV transformer? 5. 15kv transformer specifications 6. Daelim's Transformer Project Case

 

What is a 15kV transformer?

15kV transformer generally refers to a distribution transformer with a high voltage of 15kv and a capacity of less than 5000kVA.

 

Try for free: How Much You Know For The Different Types Of Transformers?

What are the 5 types of 15 kV transformer?

It has different types based on different applications：15kV pad mounted transformer，15kV oil-immersed transformer，15kV overhead single-phase transformer，15kV dry type transformer, and 15 kV single phase pad mounted transformer.

 

2-1 15kV 3 phase pad mounted transformer

15kV 3 phase pad mounted transformers are also called pad-mounted residential transformers. The characteristics of pad mount transformers are relatively compact structure, small size, simple installation, and easy maintenance.Three-phase padmounted transformer according to the uses, can be divided into the dead front type and live front type. Whether it is dead front type or live front type, it is divided into loop feed and radial feed according to the wiring method.

 

The pad mounted transformer can be configured with dual voltage according to customer requirements.In addition to 15kv, the high voltage of the pad mounted transformer also has 2.4kV, 4.16kV, 4.8kV, 7.2kV, 7.62kV, 12.47kV, 13.2kV, 22.86kV, 13.8kV, 14.4kV, 24.94kV, 19.92kV, 34.5kV. The pad-mounted residential transformer capacity is up to 5000kVA.

Read more :3 Phase Pad Mounted Transformer

 

There are many uses of pad mount transformers, such as residential areas, shopping malls, factories, etc. In recent years, the more popular ones are used in Bitcoin mining factories. Many of Daelim's Canadian and American customers purchased pad mounted transformers for bitcoin mines. According to market research and understanding, we found that most of the pad mounted resident transformers used in bitcoin mines have a capacity of 1500kva, 2500kva, 2550kva, and 3750kva.

 

2-2 15kV oil-immersed transformer

15kV oil immersed transformer performs the last voltage transformation in a distribution grid. It converts the voltage used in the transmission lines to one suitable for household and commercial use, typically down to 240 volts.

 

At present, oil-immersed transformers are particularly common equipment in the power grid, and more than 70% of them are oil-immersed transformers. Oil-immersed transformers have strong adaptability to the environment, good insulation and thermal conductivity, high mechanical strength, and strong short-circuit resistance. They are generally used in hu, and the most important thing is their low cost. At the same time, oil-immersed transformers also have disadvantages such as transformer oil is flammable, and may burn or even exploding when exposed to flames; oil leakage failures occur; insulation materials will age and reduce insulation performance over time.

Read on: Overview of Oil-Immersed Distribution Transformers

 

2-3 15kV overhead single phase transformer

15kv single phase transformer has a simple structure, small size, and low loss, mainly due to slight iron loss, and is suitable for application and promotion in low-voltage distribution networks with small load density. A single-phase transformer is a transformer in which both primary and secondary windings are single-phase windings.

 

The overhead single phase transformers are also called single phase pole mount transformers and one-phase transformers. In addition to 15kV single transformer, there are also 12.47kV/7.2kV, 13.2kV/7.62kV, 13.87.2kV/7.95kV, 34.5kV/19.92kV. According to different countries and regions, the use of low voltage: 120-240v, 240-480v , 347v, 600v, etc.The commonly used capacity of single transformers is 15kVA, 25kVA, 37.5kVA, 50kVA, 75kVA, 100kVA, and 167kVA.

 

Single-phase transformers and single-phase power supply technology are constantly evolving. Over the years, the development of science and technology has promoted the development of single-phase transformers. The application of wound iron core and amorphous iron core technology in single-phase transformers can greatly reduce the core loss of transformers.

 

2-4 15kV dry type transformer

15kV dry type transformer also called cast resin transformer or epoxy resin transformer. Unlike oil-immersed transformers, dry-transformed iron cores and windings are not immersed in transformer oil. The dry transformer structure is mainly composed of an iron core composed of silicon steel sheets and an epoxy resin cast coil.

 

The dry transformer has the characteristics of fireproof, moisture-proof, explosion-proof, maintenance-free, environmentally friendly, and strong overload capacity, and can only be used indoors. Although dry change has so many advantages, the cost of cast resin transformer is also relatively high, generally, 2-3 times that of the same capacity oil transformer so that you can choose according to your own needs and budget.

Read more: Ultimate guide of cast resin dry-type transformer

 

2-5 15 kV single phase pad mounted transformer

15 kV single phase pad mounted transformer is oil-filled transformer. The 1 phase pad mounted transformer shape looks like a square box. It has a flip-top cover, which can be opened to see the high and low-voltage sides. Like the 3-phase box transformer, it has high and low-voltage terminals, bay-o-net fuses, backup fuses, tap changers, etc. If 3 units of single-phase pad transformers are used in parallel, it is equivalent to a three-phase transformer.

 

Likewise, the high voltage of the single-phase pad-mounted transformer can have dual voltage switches. In areas with a small population density, we can see that single-phase box transformers are placed at the door of every household for their power supply.

 

How much does a 15kV transformer cost?

We introduced above that there are 5 types of 15kV transformers:

The cost of different types of transformers is also different. The main factors affecting the price of 15kV transformers are:

1. Transformer type.

The cost of a dry transformer is much higher than that of oil transformer, and the higher the insulation level, the higher the cost;

2. Transformer capacity.

The larger the capacity of the same type of transformer, the higher the price.

3. Transformer accessories.

Transformer accessories affect the price. Are the accessories made in China or from internationally renowned brands? If it is made in China, the price will be relatively low, if the international brand such as ABB, Siemens, Qualitrol, Schneider, German MR, etc., the price will be much higher.

4. Winding material.

Copper transformers are more than 30% more expensive than aluminum transformers because the cost of copper is relatively higher than that of aluminum.

5. Transformer efficiency value.

The higher the efficiency value, the higher the price of the transformer. The higher the efficiency value means, the use of silicon steel sheets with particularly low loss, and the price of the purchased silicon steel sheets will be higher.

Keep on reading: Ultimate 500 kVA Transformer For Guide

 

What is the application of a 15kV transformer?

We know that a transformer is a device used to change the AC voltage, there are step-up transformers and step-down transformers. Most of the 15kV step-down transformers are used in power transmission and distribution systems. The 15kV step-up transformer is mainly used for wind power generation, and both dry and three-phase pad mounted transformers can be used for wind power generation.

15kV transformer specifications

15kV pad mounted transformer specifications

Standard Ratings (kVA)	No-load loss(w)	On-load loss(w)	Width(mm)	Weight(kg)
75	180	1250	1280	645
150	280	2200	1280	989
225	400	3050	1280	1195
250	480	3650	1280	1415
500	680	5100	1280	1905
750	980	7500	1730	2755
1000	1150	10300	1730	3235
1250	1360	12000	1730	4050
1500	1640	14500	1730	4200
2000	1940	18300	1730	4600
2500	2500	25500	1730	4900
2750	2600	23600	1730	6300

Learn more: How Do I Choose A 1500kva Transformer In 2022?

 

15kV oil-immersed transformer specifications

Standard Ratings (kVA)	No-load loss(w)	On-load loss(w)	Weight(kg)
400	570	4300	1450
500	680	5150	1670
630	810	6200	1960
800	980	7500	2340
1000	1150	10300	2760
1250	1360	12000	3200
1600	1640	14500	3950
2000	1940	18300	4890
2500	2300	20260	6280

 

15kV dry transformer specifications

Standard Ratings (kVA)	No-load loss(w)	On-load loss(w)	Weight(kg)
250	840	3460	1280
315	970	4080	1530
400	1150	4850	1660
500	1350	5860	2010
630	1530	6860	2390
800	1750	8280	3060
1000	2070	9780	3410
1250	2380	11500	4010
1600	2790	13800	5030
2000	3240	16300	5980
2500	3860	19600	6180

 

Read more: How to choose the best distribution transformer?

 

 

Daelim's Transformer Project Cases

We have offered different types of three-phase pad-mounted transformers and single-phase pad-mounted transformers for the US markets such as US crypto mining farm, Canadian market, Chilean market, Panama market, and Nicaragua market.

 

In 2016, we provided equipment for substations in Latin America.

We provided single-phase transformers of 2.4kv, 7.,2kv, 13.8kv, and 14.4kv used for a remote village network in Saskatoon, Canada in 2019.

 

We designed the specific installations to lower the high voltage in 2018 according to the client's request 2018. Daelim Transformer will be a professional partner.

Daelim Transformer Custom 1500 kVA Pad Mounted Transformer for Canada

1000 kVA Pad Mounted Transformers For Jamaica Market

2 MVA Pad Mounted Transformer for Utility

2600 kVA Pad Mounted Transformer for Cryptocurrency Mining

Pad Mounted Transformer for BESS System 4.0 MVA in Riverside County, California

2550 kVA Pad Mounted Transformer For Data Center in Mexico, Missouri

2000 kVA Pad Mounted Transformers for Canadian Utility

2600 kVA Pad Mounted Transformer For Crypto Mine In Kansas

1750 kVA Pad Mounted Transformer for the Dominica

---

Related Products

---

Related Article