A Comprehensive Guide to Transformer Specifications

Daelim Transformer is a leading manufacturer of professional electrical transformers that meet the highest industry standards, including IEEE, ANSI, CSA, and IEC. We offer a wide range of transformer specifications to cater to the unique requirements of Daelim customers.

 

Whether you need a power transformer, distribution transformer, or special transformer for a specific application, we have the technical expertise and state-of-the-art manufacturing capabilities to deliver the transformer you need. Daelim transformers are built using only the highest-quality materials and components, ensuring that they meet or exceed all applicable international standards.

Table of contents

1. Pole Mounted Transformer Specifications 2. Pad Mounted Transformers Specifications 3. Small Substation Transformers Specification 4. Solar Transformer Specification 5. 50 kVA transformer specifications 50 kVA single phase transformer specification 50 kVA single phase pad mounted transformer specification 6. 100 kVA transformer specification 100 kVA single phase transformer specification 100 kVA single phase pad mounted transformer specification 7. 150 kVA transformer specification 150 kVA pad mounted transformer specification 8. 200 kVA transformer specification 200 kVA single phase pad mounted transformer specification 9. 250 kVA transformer specification 250 single phase transformer specification 250 kVA single phase pad mounted transformer specification 10. 315 kVA transformer specification 11. 400 kVA transformer specification 12. 500 kVA transformer specifications 500 kVA pad mounted transformer specification 500 kVA power transformer specification 13. 630 kVA transformer specifications 14. 750 kVA transformer specifications 750 kVA pad mounted transformer specification 750 kVA skid-mounted transformer specification 15. 1000 kVA transformer specification 1000 kVA pad mounted transformer specification 1000 kVA power transformer specification 16. 1250 kVA transformer specification 17. 1500 kVA transformer specification 1500 kVA pad mounted transformer specification 1500 kVA small substation power transformer specification 18. 1600 kVA transformer specifications 19. 2000 kVA transformer specification 2000 kVA pad mounted transformer specification 2000 kVA small substation transformer specification 20. 2500 kVA transformer specifications 2500 kVA pad mounted transformer specification 2500 kVA three phase power transformer specification 21. 10 MVA transformer specification 10 MVA pad mounted transformer specification 10 MVA power transformer specification 22. 20 MVA transformer specification 23. 25 MVA transformer specifications 24. 40 MVA transformer specification 25. 50 MVA transformer specification 26. 100 MVA transformer specification 27. 11kv transformer specification 28. 33kv transformer specifications

Pole Mounted Transformer Specifications

Pole mounted transformers are a key product in Daelim factory, featuring a comprehensive standard specification that covers important details such as the supplier, model, country of origin, manufacturing and testing standards, key features, core materials, losses, high and low-voltage electrical characteristics, short circuit capability, impedance, tank design, dimensions, and weight, accessories, testing, and warranty.

 

As a reliable supplier, DAELIM offers the D model with customizable capacity and primary and secondary voltage options. Daelim pole mounted transformers are manufactured to meet industry standards such as IEEE Std, CSA Std, and IEC Std.

 

Customers can select from a range of features to suit their specific needs, including rated power (ranging from 15kVA to 333kVA), primary and secondary voltage, and winding temperature rise. Daelim transformers have a maximum voltage of 34.5kV, with winding temperatures kept below 65°C, hottest-spot winding temperatures under 80°C and oil top temperatures under 65°C. Losses in no load and on load conditions are dependent on the transformer's capacity, with a tolerance of ±10% for single loss and ±6% for total loss.

 

Daelim offers both mineral oil and vegetable oil cooling options and uses an A(105°C) insulation system. Customers can choose from aluminum or copper winding materials and silicon or stainless steel core materials. The tank color is customizable, and Daelim only uses PCB-free oils. Daelim transformers operate within a wide temperature range of -50°C to +40°C, making them suitable for a variety of project sites.

 

The accessories included with Daelim transformers are extensive and include cooper strips, core and coil assembly, fastening ring or cover clamp, grounding bar, HV and LV bushings, nameplate, pressure relief device, sealing ring, tank cover, and tap changer. Daelim also accommodates specific accessory requests from customers, all of which are detailed in the spec sheet.

 

Lastly, Daelim transformers come with a 2-year warranty, providing customers with peace of mind and assurance in the quality of DB transformers.

Learn more: How to buy an electric pole transformer-Daelim?

 

Pad Mounted Transformers Specifications

Daelim specializes in pad mounted transformers that adhere to ANSI/IEEE, and CSA standards with UL/cUL certificates, and are widely used by renowned companies such as EATON, SOLOMON, and AMAZON. Daelim pad mounted transformers are available in single phase and three phase options, and are UL and cUL listed for quality assurance.

 

The specification of Daelim pad-mounted transformers includes the following details: supplier (Beijing Daelim), model (ZGD/ZGS H or Z with added capacity, primary and secondary voltage), where H denotes loop feed and Z signifies radial feed, country of origin (CHINA), standard manufacturing and testing (IEEE/CSA), type (loop type and radial type), and installation (outdoor). Altitude above sea level and ambient temperature is specified as 1000m and 50°C respectively, with a maximum altitude of ≤1500m.

Try for free: 2500 kVA Pad Mounted Transformer

Rated power, high and low voltage are customized based on customer requirements, and frequency varies depending on the country of installation (50Hz or 60Hz). Cooling system options include oil type with choices of mineral oil or vegetable oil, and customers can also request a cooling fan. The number of windings is typically 2, with the option for single phase or three phase configurations. Daelim pad-mounted transformers are all core type, as opposed to shell type.

 

Winding material options include aluminum or copper, with copper being more conductive but also more expensive. The working temperature range is from -25°C to +40°C, depending on the project location. The top oil temperature rise is limited to 65°C, while the winding temperature rise is also 65°C and the hot spot temperature is 80°C.

 

Losses are specified as no load losses at rated voltage and rated frequency on the principal tap, as well as load loss at rated voltage. The vector group, such as Dyn and Ynyn connection symbols, is determined based on customer requirements, and the core legs are decided accordingly (3 for one side ground connection, and 5 for both side ground connection). Tap changer options include on-load tap changer and off circuit tap changer.

 

High voltage and low voltage electrical characteristics of transformers and assembled load break terminals are in compliance with customer-specified standards. Customers can choose the material and color of the tank, with options of silicon steel or stainless steel for material, and ANSI gray or Munsell green for color. Dimensions and weight of the transformers depend on the capacities, with larger capacities generally resulting in bigger size and heavier weight for the same type of transformer.

 

Standard accessories provided by Daelim include lifting lugs, hinged door, parking stand bracket, pressure relief valve, drain valve, nameplate, thermometer, oil level gauge, load break switch, flat padlock door, HV and LV bushings, and others as required by customers.

Learn more : 3 Phase Pad Mounted Transformer

 

Small Substation Transformers Specification

Here are small substation transformer specifications

General background: This includes the supplier (e.g. Beijing Daelim), the model name (including capacity, primary and secondary voltage), and the country of origin (e.g. China).

 

Environmental characteristics and networks: This includes information about the installation environment, such as whether it will be installed indoors or outdoors, the altitude above sea level, and the ambient temperature. It also includes information about the network, such as the frequency (e.g. 50Hz or 60Hz) and the type of connection (e.g. loop or radial feed).

 

General characteristics: This includes the rated power, high and low voltage, type (e.g. single phase or three phase), cooling system (e.g. oil type with mineral or vegetable oil), and the number of windings.

 

Service technical characteristics: This includes information about the working temperature range and the temperature rise of various components (e.g. top oil temperature rise, winding temperature rise, and hot spot temperature).

 

Technical characteristics: This includes information about the losses of the transformer, such as the no-load losses at rated voltage and frequency on the principal tap, and the load loss at rated voltage. It also includes information about the vector group and the number of core legs.

 

Oil properties: This includes information about the type of oil used, its properties, and any relevant standards.

 

Dimension and weight: This includes information about the physical size and weight of the transformer, which can vary depending on the capacity and type of transformer.

 

Test standard: This includes information about the testing standards used to ensure the quality and safety of the transformer, such as IEEE/CSA.

 

Warranty: This includes information about the length and terms of the warranty offered by the supplier.

 

Overall, small substation transformers are customized based on the specific needs of the customer, similar to pad-mounted transformers. By considering all of these factors, customers can select a transformer that is optimized for their specific application and environment.

Get it now: Why Substation Transformers Are So Important In Power Systems?

 

Solar Transformer Specification

Solar power, also known as distributed photovoltaic (DPV) power generation systems, is a renewable energy source that is becoming increasingly popular worldwide. The process of converting solar energy into electrical power is achieved through the use of photovoltaic semiconductors that can convert the sun's rays into direct current (DC) electricity.

 

In the case of solar farms, the energy produced can reach many megawatts (MW) of power. However, to make the power usable in various scenarios, it must be converted from DC to three-phase AC electricity.

Read more about Solar Transformer

Daelim offers customized solutions for solar farm projects through the use of pad-mounted transformers and substation transformers. These solutions can be tailored to meet specific project requirements, including rated capacities, nominal voltage, winding connection diagram, vector group, and electronic shields.

 

Pad-mounted transformers and substation transformers play an important role in the efficient and reliable transmission of solar energy from the generation site to the distribution network. These transformers are responsible for stepping up or stepping down the voltage of the electricity generated, depending on the specific requirements of the transmission and distribution networks.

 

In addition to the technical specifications, Daelim also offers comprehensive testing and certification of its transformers to ensure compliance with industry standards and regulations. Customers can also benefit from Daelim's warranty and technical support services, ensuring the smooth operation and maintenance of their solar power generation systems.

 

Daelim has been providing reliable and professional transformer solutions for more than 20 years. Daelim has gained a reputation and trust from Daelim customers in North America and South America and other countries and regions through day-to-day efforts and considerate service to Daelim customers. Daelim makes ideal solutions for solar power, wind power, energy storage, mining industries, cryptocurrency, semiconductors, and utilities, for personal use and for business use. No matter when you need transformer solutions for yDaelim projects, feel to contact us and we are always here to help.

Daelim's Solar Transformer For Solar Photovoltaic System In North America

50 kVA transformer specifications
50 kVA single phase transformer specification

H.V.	L.V.	Impedance	Energy Efficency	VOL.OF OIL	Total Weight
13800V	120-240V	2.40%	ANSI C57.12	100L	320kg

 

 

50 kVA single phase pad mounted transformer specification

H.V.	L.V.	Impedance	Cooling System	VOL.OF OIL	Total Weight
12470y/7200	240/120	2.00%	ONAN	180kg	560kg

Learn more about the 50 kVA Pad Mounted Transformer

 

100 kVA transformer specification

100 kVA single phase transformer specification

H.V.	L.V.	Impedance	Energy Efficiency	VOL.OF OIL	Total Weight
14400/24940Y*16000/27600Y	347/600Y	2.40%	ANSI C57.12	165L	660kg

 

 

 

100 kVA single phase pad mounted transformer specification

H.V.	L.V.	Impedance	Energy Efficiency	VOL.OF OIL	Total Weight
34500/19920	240/120	2.00%	DOE Efficiency Std	255kg	750kg

 

150 kVA transformer specification

150 kVA pad mounted transformer specification

H.V.	L.V.	MANUF.REF.NO.	Energy Efficency	BIL	Cooling Method
14400	600GrdY 347	CSA C227.4-06	99.20%	95/30kV	ONAN

 

200 kVA transformer specification

200 kVA single phase pad mounted transformer specification

H.V.	L.V.	Impedance	Tap Voltages HV	VOL.OF OIL	Total Weight
13800	380GrdY/220	4.00%	±2x2.5%	500kg	2000kg

 

250 kVA transformer specification

250 single phase transformer specification

H.V.	L.V.	Impedance	Test Standard	Insulation Class	Cooling Method
24.94kV	0.277kV	3.29%	ANSI C57.12.20	A	ONAN

250 kVA single phase pad mounted transformer specification

H.V.	L.V.	Cooling System	Working-Temperature	BIL	Impedance
27/16kV	120/240V	KNAN	-50°C to +40°C	125/30kV	2.50%

315 kVA transformer specification

H.V.	L.V.	Impedance	Cooling Method	VOL.OF OIL	Total Weight
11kV	0.4kV	4.00%	ONAN	395kg	1390kg

400 kVA transformer specification

H.V.	L.V.	Impedance	Cooling Method	VOL.OF OIL	Total Weight
11kV	0.416kV	4.00%	ONAN	255kg	1350kg

 

500 kVA transformer specifications
500 kVA pad mounted transformer specification

H.V.	L.V.	Cooling System	Impedance	Standard	Temperature Rise
12000 Delta	480Y/277	ONAN	5.75%	IEEE C57.12.00 12.90/12.34	65°C

500 kVA power transformer specification

H.V.	L.V.	VECTOR GROUP	Impedance	VOL.OF OIL	Total Weight
27.6kV	480GrdY/277V	Dyn1	4.75%	550L	2250kg

630 kVA transformer specifications

H.V.	L.V.	Cooling System	Impedance	Standard	Temperature Rise
20kV	0.4kV	ONAN	5.50%	IEC60076	65°C

 

750 kVA transformer specifications

750 kVA pad mounted transformer specification

H.V.	L.V.	Cooling System	BIL	VOL.OF OIL	Total Weight
4160V	480GrdY/277V	KNAN	30/60kV	540kg	2800kg

750 kVA skid-mounted transformer specification

H.V.	L.V.	Cooling System	Impedance	BIL	Total Weight
12.47kV	480Y/277	OA/FA	7.00%	95/30kV	6954kg

 

 

1000 kVA transformer specification

1000 kVA pad mounted transformer specification

H.V.	L.V.	Impedance	BIL	VOL.OF OIL	Total Weight
12.47kV	480Y	5.75%%	95/30kV	650kg	3235kg

 

 

 

1000 kVA power transformer specification

H.V.	L.V.	Cooling System	Impedance	BIL	Total Weight
12kV	480Y/277	OA/FA	5.55%	95/30kV	5790kg

1250 kVA transformer specification

H.V.	L.V.	Energy Efficency	NO LOAD LOSSES	ON LOAD LOSSES	Total Weight
25kV	0.416kV	99.21%	1950W	13100W	4000kg

 

1500 kVA transformer specification

You may enjoy: Pad Mounted Transformer

1500 kVA pad mounted transformer specification

H.V.	L.V.	Energy Efficency	NO LOAD LOSSES	ON LOAD LOSSES	Total Weight
25kV	0.416kV	99.21%	1950W	13100W	4000kg

1500 kVA small substation power transformer specification

H.V.	L.V.	Impedance	Standard	VOL.OF OIL	Total Weight
13.8kV	0.48kV	5.52%	CSA C88 and C802.3	1080L	4200kg

1600 kVA transformer specifications

H.V.	L.V.	Cooling System	Impedance	No load loss	On load loss
11kV	0.208kV	ONAN	4-5%	1640W	14500W

2000 kVA transformer specification

2000 kVA pad mounted transformer specification

H.V.	L.V.	NO LOAD LOSSES	ON LOAD LOSSES	VOL.OF OIL	Total Weight
13.8kV	0.6kV	2230W	18100W	1385L	5000kg

Learn more about 2000kVA Pad Mounted Transformer

2000 kVA small substation transformer specification

H.V.	L.V.	Impedance	Cooling Method	VOL.OF OIL	Total Weight
13.8kV	480v	7.00%	ONAN/ONAF	3150 lbs	13000 lbs

2500 kVA transformer specifications

2500 kVA pad mounted transformer specification

H.V.	L.V.	Impedance	Cooling Method	VOL.OF OIL	Total Weight
13.8kV	415v-240v	5.70%	ONAN	1450L	6300kg

Learn more about 2500 kVA Pad Mounted Transformer

 

 

2500 kVA three phase power transformer specification

H.V.	L.V.	EFFICIENCY	ON LOAD LOSSES	VOL.OF OIL	Total Weight
24.94kV	480GrdY/277V	99.37%	18100W	1220kg	5450kg

10 MVA transformer specification

10 MVA pad mounted transformer specification

H.V.	L.V.	VECTOR GROUP	BIL	VOL.OF OIL	Total Weight
24900GrdY	600V	Dyn1	125/30kV	3000L	16000kg

 

 

10 MVA power transformer specification

H.V.	L.V.	VECTOR GROUP	Applied Standard	VOL.OF OIL	Total Weight
25kV	4.16kV	Ynd1	CSA C88-16	2850L	14000kg

20 MVA transformer specification

H.V.	L.V.	BIL	Applied Standard	VOL.OF OIL	Total Weight
24.9kV	13.8kV	150/95kV	IEEE C57.12.00	15980kg	61460kg

Keep reading: 20 MVA Transformer: The Ultimate FAQs Guide

25 MVA transformer specifications

H.V.	L.V.	BIL	Applied Standard	VOL.OF OIL	Total Weight
132kV	25kV	150/95kV	EN 50329/AS 60076	17000kg	51000kg

40 MVA transformer specification

H.V.	L.V.	Cooling Method	Applied Standard	Mounting position	Total Weight
138kV	24.9kV	ONAN/ONAF/ONAF	IEEE C57.12.00	Side mount	58000kg

50 MVA transformer specification

H.V.	L.V.	ON LOAD LOSSES	ON LOAD LOSSES	VOL.OF OIL	Total Weight
34.5kV	13.8kV/7.97kV	30000W	187800W	15000kg	62500kg

100 MVA transformer specification

H.V.	L.V.	NO LOAD LOSSES	ON LOAD LOSSES	Impedance	Vector-group
115kV	34.5kV	90000W	250000W	12.80%	YNd11

Learn more about 100 MVA Transformer

11kv transformer specification

Transformer specification sheet

Rating	L.V.	NO LOAD LOSSES	ON LOAD LOSSES	VOL.OF OIL	Total Weight
75kVA	240 480 415 480y/277 600Y/347	180W	1250W	120kg	645kg
112.5kVA		200W	1500W	138kg	729kg
150kVA		280W	2200W	201kg	989kg
225kVA		400W	3050W	230kg	1195kg
300kVA		480W	3650W	260kg	1415kg
500kVA		680W	5100W	325kg	1905kg
750kVA		980W	7500W	535kg	2755kg
1000kVA		1150W	10300W	650kg	3235kg
1500kVA		1640W	14500W	748kg	5835kg
2000kVA		2160W	20645W	950kg	6430kg
2500kVA		2680W	27786W	1020kg	8865kg

Read more about 11kV Transfromer

33kv transformer specifications

Rating	L.V.	NO LOAD LOSSES	ON LOAD LOSSES	Impedance	Total Weight
800kVA	208/120 415/240 480/277 400 600 12000 12470 13200 13800 or others	980W	9350W	2.7% 3.1% 4.35% 5.75% 6%	2050kg
1000kVA		1160W	11500W		2450kg
1250kVA		1380W	13900W		2900kg
1600kVA		1660W	16600W		3400kg
2000kVA		2030W	18300W		4100kg
2500kVA		2450W	19600W		4750kg
3000kVA		3240W	26500W		6500kg
5000kVA		4500W	27000W		9500kg
7500kVA		7200W	32000W		13600kg
10000kVA		8500W	35500W		15800kg

Read more about the 33kV Transformer

 

If the above transformer specifications cannot meet your needs, please Contact Daelim team.

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