75 KVA Transformer: The Perfect Solution for Your Power Needs
Choosing the right transformer for your business can be a daunting task. With so many different types and sizes of transformers available, it's important to know what your business needs before making a purchase. Today I will talk about the related content of the 75 kVA transformer.
Let's dive deeper into the details to discover what it is, its properties, and the calculations involved, and discover why a 75 kVA transformer could be the perfect solution for your power needs.
What do you need to consider when choosing to buy a 75 kVA transformer?
The Type of Business You Have
Different businesses have different power needs. For example, a restaurant will have different power needs than a manufacturing plant. Make sure to consider the type of business you have when selecting a transformer.
A 75kVA transformer is a small-size transformer that is perfect for any start-up or small business power needs. Daelim Belefic also offers a wide variety of transformers to fulfill small to large customer requirements.
Get it now: Pad Mounted Transformer
The Size of the Business
The size of your business will also dictate the size of the transformer you need. A small business will not need as large of a transformer as a large business.
The 75 kVA transformer is perfect for businesses with small to medium requirements. With a very effective power factor, a 75 kVA transformer is way more efficient than purchasing a smaller size that can later spell more power losses.
The Power Needs of the Business
This is perhaps the most important factor to consider when choosing a transformer. You need to make sure that the transformer you select can handle the power needs of your business. Otherwise, you could end up overloading the transformer, which can cause serious damage.
Consult our experts to ensure compatibility of the 75 kVA transformer with existing business set-up or for future requirements.
The Budget
Like any other purchase, you'll need to consider your budget when selecting a transformer. Be sure to factor in the cost of installation and any other associated costs.
Daelim Belefic Transformer has a world-class manufacturing facility, and with that customers are ensured to find the lowest price high quality 75 kVA transformer right here.
The Warranty
A good way to know a good manufacturer is the type of warranty they can offer. This will guarantee the protection of your investment in case the unit fails.
Depending on the unit, Daelim Belefic Transformer generally can offer up to 24 months of guarantee after the date of delivery.
What Is the 75 kVA Transformer?
The 75 kVA transformer is a static device that converts electrical energy to various levels. Normally converting high-voltage with low-current energy form to a usable low-voltage with high-current energy form.
Comprised not less than two coils winding around a shared common core. As soon as electrical energy is introduced to the primary coil, a magnetic field is created that pushes electrical current to the secondary coil.
The resulting current is then ready and safe to use for various applications which include:
Supply of power for household use.
Powering small to medium voltage devices.
Fit industrial equipment with special voltage requirements.
Protect power lines and devices from being damaged in case of abnormal electrical upsurge.
Read more: Losses in Transformer: The Ultimate FAQs Guide - Daelim
Types of 75 kVA Transformers
There are several types of 75 kVA transformers. Below we’ll go over the three basic types and their functions to find out which one is best for your needs.
75 kVA Single Phase Pole Mounted Transformer
75 kVA single-phase transformer is probably the most common type which everyone is familiar with. Typically used for electric utility distribution that steps down the voltage so everyone can enjoy electricity and make each life more comfortable. By basically stepping the voltage down to a usable single phase of 120/240 volts.
It can also be utilized to step down voltages to 277, 240/480, 2400, and 4800 which are commonly adopted for industrial and commercial use.
In addition, this small but terrible transformer can also serve small substations and other applications.
75 kVA 1 Phase Pad Mounted Transformer
75 kVA single phase pad mounted transformer is reliable and safe. It is designed and enclosed with the highest safety standard. Built with a compartment that makes it perfect for both indoor and outdoor mounting.
No need for an extra enclosure, position it at any suitable location without worrying about safety and appearance. As long as the surrounding temperature is between 40℃ to -20℃.
Learn more: Single Phase Pad Mounted Transformer
75kva 3 Phase Pad Mounted Transformer
The 75 kVA three-phase pad mount transformer comes in two distinct configurations: loop-fed and radial-fed. Both designs are meticulously crafted to fulfill specific purposes.
75 kVA Loop Feed Transformer
Illustrated in the diagram is the layout of the 75 kVA loop-feed transformer, featuring a primary voltage of 14.4 kV and a secondary voltage of 208/120V. This model is equipped with six load breakhigh bushings and four low-voltage terminals. Notably, the low-voltage X0 terminal is effectively grounded. The transformer also incorporates a 5-position tap changer, a 4-position load break switch, and three bay-O-net fuses.
75 kVA Radial Feed Transformer
In contrast, the 75 kVA radial feed transformer boasts three high-voltage bushings and four low-voltage terminals, all grounded at low voltage. The routing of high and low-voltage cables is optimally achieved through the bottom of the front cabin. The featured 75 kVA transformer, designed and manufactured by DB Transformer, as the picture shows, is configured with a high voltage of 25 kV in delta configuration and a low voltage of 480GrdY/277V. Impressively, it achieves an operating efficiency of 98.63% and is constructed in adherence to the CSA C227.4 standard.
Flexibility to tailor to specific requirements is a hallmark of the 75 kVA three-phase pad transformer. In addition to essential components like the high and low-pressure oil filling valves and oil drain valve, other optional accessories such as fuses, tap changers, and load break switches are available.
This transformer type is well crafted to fit underground load distribution. Superior features include the capability to handle high voltages, not drift on neutral points, minimal losses, and more.
Each unit is designed with a sleek appearance. With that, it can be used for shopping areas, different institutions, and industrial or economic zones. Aside from it, the unit is proven safe and environment-friendly.
Learn More About 3 Phase Pad Mounted Transformer
Daelim 75 kVA Transformer Projects Cases
75 kVA 1 PH Pad Mounted Transformer For Canada
Name: 14.4kV 75 kVA 1 PH Pad Mount Transformer
Project Location: Montreal, Canada
Quantity: 40 units
Certificate: cUL
Standard: CSA C227.3
Power Rating: 75kVA
Primary Voltage: 24940GrdY/14400V
Secondary Voltage: 240/120V
HV BIL: 125kV
LV BIL: 30kV
Polarity: Additive
Winding Material: Aluminum
Efficiency: 98.94%
Color: Seafoam Green Munsell
75 kVA Single Phase Pole Mounted Transformer For USA
Project Location: Alabama, USA
Quantity: 24 units
Certificate: UL
Standard: IEEE C57.12.20
Power Rating: 75kVA
Primary Voltage: 24.94kV
Secondary Voltage: 277/480V
HV BIL: 125kV
LV BIL: 30kV
Polarity: Subtractive
Winding Material: Aluminum
Efficiency: DOE 2016
Color: ANSI 70 Gray
75 kVA 3 Phase Pad Mounted Transformer For Canada
Project Location: Canada
Quantity: 30 units
Certificate: CSA
Standard: CSA C227.4
Power Rating: 75kVA
Primary Voltage: 25 kV Delta
Secondary Voltage: 480GrdY/277V
HV BIL: 125kV
LV BIL: 30kV
Vector Group: Dyn1
Efficiency: 98.63%
Impedance: 4%
Winding Material: Aluminum
Color: Munsell Green
Weight: 1400kg
Tap Changer: 5-Position
Daelim Transformer, a seasoned transformer manufacturer, holds UL/cUL and CSA certifications. Boasting extensive project expertise in the Americas, we cater to local transformer dealers, utilities, real estate, and electrical wholesalers. Our commitment lies in customizing transformers tailored to your project needs. As your trusted partner, Daelim Transformer offers transformative solutions that prioritize quality and innovation. Explore the possibilities and entrust your projects to a manufacturer dedicated to exceeding expectations. Choose Daelim for reliability, expertise, and customized solutions that power your success.
The following are the basic dimensions of a 75 kVA Daelim Belefic Transformer which is carefully designed to uphold strict compliance with the standards.
Moreover, the dimensions can always be tailored according to specific needs or any special requirement. Customer input is always welcome and accommodated.
Different types of 75kVA transformers have different dimensions.
Table 1.0
| Daelim Belefic Transformer | Loss(W) | Dimension | |||
| No-load Loss (W) | On-load Loss (W) | Width | Depth | Height | |
| 75 kVA Single-phase Overhead Conventional Transformer | 190 | 650 | 745 | 840 | 1035 |
| 75 kVA Single-phase Overhead Transformer | 250 | 650 | 780 | 800 | 1170 |
| 75 kVA Single-phase Pad-mounted Transformer | 190 | 650 | 610 | 860 | 840 |
| 75 kVA 3-phase Pad-mounted Transformer | 180 | 1250 | 1730 | 990 | 1270 |
Get it now: How to choose pad-mounted transformer for your project?
For the used 75kVA transformers, you need to learn more about the use of the transformer, and the quality of the transformer, check the internal structure of the transformer, and conduct on-site test experiments on the transformer when purchasing. It is best to have a warranty period as a guarantee.
How Many Amps Can a 75 kVA Transformer Handle?
The amperage that a 75 kVA transformer handles are primarily dependent on the predefined primary and secondary voltage the transformer is designed and calculated for.
This table is a summary of the amperage a 75 kVA transformer is theoretically capable of handling according to the voltage of the winding.
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Table 2.0
| Voltage (V) | 75 kVa Full Load Amps (Amps) | |
| Single Phase | Three Phase | |
| 208 | 360.58 | 208.18 |
| 240 | 312.5 | 180.42 |
| 480 | 156.25 | 90.2 |
How Much Does a 75 kVA Transformer Weight?
The total weight of a 75 kVA single-phase transformer can range from 400 to 700 kilograms while a three-phase 75 kVA transformer can weigh a little over 1 ton. Weight varies depending on the type of transformer, its cooling system, and other factors.
The weight of the 75 kVA transformer specified here is subject to changes according to client specifications and requests. The table below shows the standard weight of a 75 kVA Daelim Belefic Transformer according to its type.
Table 3.0
| Daelim Belefic Transformer | Weight(Kg) | |
| Oil Weight | Total Weight | |
| Single-phase Overhead Transformer | 88 | 480 |
| Single-phase Overhead Transformer | 138 | 505 |
| Single-phase Pad-mounted Transformer | 132 | 672 |
| Three-phase Pad-mounted Transformer | 435 | 1020 |
Read more: 10.5MVA-13.8/2.4kV Substation Transformer
What Is the Impedance of a 75 kVA Transformer?
Impedance is tested and defined in the factory before it is stamped on its specification plate. It is a factor of short circuit voltage over the corresponding rated voltage. This could also be set as per the requirement
A 75 KVA transformer impedance can range from 2.7% to 5.75%, higher or lower depending on the application. Daelim Belefic Transformer experts can recommend or design it according to client specifications.
Learn More About Transformer Impedance
What Size Wire For 75 kVA Transformer?
The 75kVA transformer wire size is mainly determined according to the current size of the primary and secondary voltage sides. The greater the current, the greater the size of the wire.
To determine the wire size, we need to look over the Maximum Rating or Setting of Overcurrent Protection for Transformer Table 450.3(B) first. According to the table, for currents, 9 Amps above should take 125% (Primary & secondary protection).
For example with a three-phase 75 kVA transformer having 480V as primary voltage. When lookup Table 2.0, it will have a 90.2 Amps full load Amps.
Multiply that by the primary and secondary protection recommended and the result would be 112.75 Amps or 113 Amps. According to the standards stated in Table 310.15(B)(16) and the rule stated in 240.4(B), it will require 115A ampacity.
With that, it will have the recommended wire size for a 75 kVA transformer which is a 2 AWG copper conductor considering normal or standard conditions.
Learn more: Electric Power Substation Transformers - 220KV-69KV-138KV
75 kVA Transformer Calculations
There are several calculations involved when we talk about a 75 kVA transformer. Let us start with the calculations required to derive the answers to the questions above.
- Converting 75 kVA to Watts.
- The formula for conversion:
Watts =kVA 1000
Watts =75 kVA 1000
75 kVA =75,000 Watts
- The calculation to get the Full Load Amps (FLA).
- The formula for Single Phase:
FLA = kVAkV Amps
The formula for Three Phases:
FLA = (kVA) 33 kV Amps
Sample Calculation:
3 Phase 75 kVA transformer
Primary Voltage = 480
Secondary Voltage = 208
FLA = (75kVA) 33 208V1000V Amps
FLA =90.2 Amps
- The calculation to get the wire size.
- The formula for Ampacity:
Ampacity = FLA Overcurrent Protection
Sample Calculation:
3 Phase 75 kVA transformer
Primary Voltage = 480
Primary Protection from Table 310.15(B)(16) = 125%
Ampacity = 90.2 Amps 125%
Ampacity = 112.75 or 113 Amps
Note: Round up to 115 Ampacity following 240.4(B) rules, falling under these 2 AWG copper conductors.
- Computation for Three phases short-circuits current (ISC).
- The formula for ISC:
ISC = FLASecondary%Z(0.9) 100
Sample Calculation:
3 Phase 75 kVA transformer
FLA(secondary) = 280 Amps
% Impedance(%Z) = 5%
ISC = 75 kVA (3 )32081000%5(0.9) 100
ISC = 4,626.66 Amps
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75 kVA Transformer for Sale
Daelim Baelific Transformers offers 75 kVA transformers for different applications. Basically, transformers with a capacity of less than 250 kVA are practically single-phase.
Single-phase transformer has the following advantages:
It is more cost-effective.
Easier to handle.
Efficient and reliable.
Less maintenance.
Simpler to fix.
Read more: Single Phase Pole Mounted Transformer
Daelim Baelific 75 kVA transformers are available in:
75 kVA Single-phase Overhead Conventional Distribution Transformer/Overhead Completely Self Protected (CSP) Distribution Transformer
Primary Voltage: 2400 - 19,920 V
Secondary: 120 - 600 V
Designed for stepping utility distribution voltages ranging from 2400 to 34500 volts down to lower utilization voltages. It can also be used for stepping down industrial and commercial voltage ranging like 277, 240/480, 2400, and 4800, or the commonly used 120/240.
This unit can be utilized for substations and other applications to step up voltages. It can also serve as a protective device.
75 kVA Single Phase Pad Mounted Transformer
Primary Voltage: 34.5KV - 19.92KV, 13.8KV-7.957KV, 13.2KV-7.62KV, 12.47KV-7.2KV or others.
Secondary Voltage: 120-240V, 240-480V, 347/600V or others.
Oil-insulated, self-cooling, and dead-front. It is available in radial feed and loop feed configurations. Uses copper or aluminum winding all optimized to achieve the highest efficiency.
75 kVA Three-phase Pad-mounted Transformer
Primary Voltage: 2400 - 44000V
Secondary Voltage: From 120Y/208V
Designed for an underground distribution system. High-voltage and low-voltage are sealed safely in a robust compartment to ensure a lower risk of accidents.
Pad-mounted transformers are enclosed in a safety cabinet with doors and locks, normally installed outdoors.
The 75 kVA transformer is good for hotels, tourist sites, residential applications, other buildings, and establishments.
Key Features:
- High-Efficiency design
- Special Ambient Design
- Low Sound Level Design
- 60 Hz Design
- K-Factor Rating
- Network type Transformers
- Can provide UL/cUL, CSA, IEEE, CESI, and other product certificates.
- Tested to comply with multiple international standards.
To know the 75 kVA Transformer price visit www.daelimtransformer.com/ and speak with our experts now!
Learn more: What is a Live Front 25kv Pad Mounted and Substation Transformer Specification?
Conclusion
That's everything about the 75 kVA transformer. Hope this article will help you make a more informed decision.
Daelim Belefic Transformer is committed to delivering the best transformer worldwide. With its proven capability to comply according to ANSI/IEEE, CSA, AS/AZS, DOE, NEMA, IEC, and GOST standards.
Aside from that, it has a devoted after-sales team strategically located in North America and Central and South America to take care of your needs after installation.
If you find 75 kVA as the perfect solution for your requirement or if you have further questions and clarifications please feel free to contact us thru the website or email us at service@daelim-electric.com and pingruidan@daelim-electric.com
Read my article How To Choose The Suitable 110KV Power Transformer?
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