3000 kVA Three-Phase Pad Mounted Transformer
Apexto 3000 kVA (3 MVA) three-phase oil-immersed transformers power ~2.5MW AI compute & mining sites. Factory-direct pricing with custom builds in 14 weeks.
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Apexto is now offering U.S.-based inventory and DDP (Delivered Duty Paid) shipping for customers in the U.S. For more details, pls. contact our sales team.
Order 2 or more machines to save on shipping costs! Contact our sales team now to secure the best rates.
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3000 kVA Transformer For Bitcoin Mining | USA & Global Ready Stock
Key specifications at a glance for quick reference and confident planning.
Rated Capacity
3000 kVA
Feed Type
Loop / Radial
Cooling Medium
ONAN
Frequency
60 Hz
Installation
Outdoor Pad-Mounted
WAREHOUSE LOCATIONS
USA • Canada • UAE • China • Global Dispatch
FAST DISPATCH
Ready Stock • Ships in 1-3 Days • DDP Door-to-Door
Product Profile
At 3 MVA, the Apexto 3000 kVA Pad-Mounted Transformer is intended for large facilities that benefit from consolidating substantial load into fewer transformer blocks. It is suitable for large mining sites, data centers, industrial campuses, and other continuous-load applications.
The higher capacity reduces the need to divide the same load among several smaller transformers, which can simplify site-level distribution in the right project architecture. High-current secondary connections, cooling performance, protection, and equipment coordination become key design considerations at this level.
Primary and secondary voltage configurations can be customized to the project, making the 3000 kVA model a practical step into large-scale power infrastructure.
Core Advantages
01. Dead-Front Dual Compartment
Features a dual-compartment design separating high and low voltage with a rigid steel barrier. Enclosed dead-front bushings ensure maximum touch safety and tamper protection.
02. Dual-Source 4-Position Switch
Equipped with a Source A/B four-position load-break switch and a tap changer, allowing operators to safely transfer, select, or isolate power without site downtime.
03. 6-Bushing Loop Feed System
Features six dead-front high-voltage bushings (H1A–H3B) with insulated caps to support loop-feed daisy-chaining, guaranteeing continuous and flexible cable routing.
04. Low-Loss Core & Windings
Built with high-grade grain-oriented silicon steel cores and precision-wound coils, delivering ultra-low electrical losses and superior short-circuit withstand capacity.
05. Complete Monitoring Gauges
Features precision dial temperature, pressure/vacuum, and oil level gauges alongside a sampling valve, ensuring continuous visibility of internal operating status.
06. LV Spade Bushings & Radiators
Features four low-voltage spade bushings (X0–X3) in a heavy-duty side throat for direct cable coupling, flanked by robust radiator banks for maximum heat dissipation.
Full Specifications
External dimensions
L:2527mm、W:1588mm、H:2134mm
Internal dimensions
L:2477mm、W:1538mm、H:2084mm
Weight
6350KG
| Rated Capacity | 3000 kVA / 3 MVA | Phase | Three Phase |
| Frequency | 60 Hz | Primary Voltage | Customized (Typical 12.47kV / 13.8kV / 24.94kV / 34.5kV) |
| Secondary Voltage | Customized (Typical 480Y/277V) | Winding Configuration | Delta / Wye / Grounded Wye, Project-Specific |
| Cooling Type | ONAN / KNAN, Project-Specific | Insulation Fluid | Mineral Oil / FR3 or Ester Fluid |
| Temperature Rise | 65°C Typical | Impedance | Typical 5.5–5.75% |
| BIL Rating | 30–150 kV, based on voltage class | Feed Configuration | Loop Feed / Radial Feed |
| Tap Changer | 5-Position Off-Circuit Tap Changer | Tapping Range | ±2 × 2.5% Typical |
| Efficiency | 99.37% | Standard | IEEE / ANSI / DOE / CSA, as applicable |
Engineering Documents
Padmount Spec Sheet
Padmount Dimensional Drawings
Padmount Installation Manual
Padmount Test & Warranty Guide
Certifications & Grid Compliance
Fully compliant with UL, CSA, IEEE/ANSI, DOE, and IEC standards. Tested and certified by international authorities to ensure maximum safety, efficiency, and instant approval by local power utilities.
UL/cUL
CSA
CESI
IEEE
IEC
EN00676
AS-NZS
GOST
Infrastructure Capabilities
We supply a full lineup of pad-mount transformers built for heavy-duty power. From 24/7 crypto mining farms to mission-critical data centers, we deliver reliable equipment designed to run non-stop.
We also offer custom engineering tailored to your exact site. From specific high and low voltages to specialized enclosure specs, we customize and deliver units in as fast as 4–6 weeks to get your project powered up on schedule.
Design
Raw Material Procurement
Assembly
Testing
Packaging
Delivery
Request a Project Quote
Tell us about your project or custom requirements. Our power systems engineers will review your specs and provide a tailored proposal.
Submit Inquiry ➔Global Project References
View All >>
Midland, West Texas, USA
4 x 3000 kVA Pad-Mounted Transformers for Utility Mining Park
Four 3000 kVA (3 MVA) padmount units deployed along the central distribution alleyway, supplying ~10MW of continuous 415V power under intense desert heat.
34.5kV
415GrdY/240V
99.48% Efficiency
Luleå, Sweden
2 x 3000 kVA Pad-Mounted Transformers for 2-Tier Modular Farm
Two 3000 kVA liquid-filled transformers installed to power a two-story stacked cooling container array, ensuring ultra-stable power delivery in sub-arctic climates.
2 x 3000 kVA
20 kV Class
400V / 415V
Frankfurt, Germany
2 x 3000 kVA (3 MVA) Padmount Units for Hyperscale AI Data Center
Dual 3000 kVA step-down transformers installed adjacent to a major data center cooling facility, delivering redundant 480V/400V power for enterprise AI server halls.
13.8 kV / 20 kV
480Y / 400V
ONAN 3000 kVA
Alberta, Canada
3000 kVA Padmount Transformer for 2.5MW Hydro Container Skid
Heavy-duty 3000 kVA transformer directly coupled with a 2.5MW containerized mining skid, providing precise voltage stepping from the Canadian utility grid.
3000 kVA
24.94 kV GrdY
415Y / 600V
Capabilities & Support
24-Month Quality Warranty
Enjoy peace of mind with our 24-month full warranty. If any operational issue arises with your transformer, our dedicated engineering team will resolve it rapidly and reliably.
Local Field Service Team
Whether in North America or global regions, our certified local engineering teams provide professional on-site transformer installation, energization testing, and maintenance.
24/7 Remote Video Support
Connect directly with our senior power engineers via live video for real-time installation guidance, system diagnostics, and instant troubleshooting support, anytime and anywhere.
Spare Parts & Support
We maintain an extensive inventory of genuine spare parts for fast dispatch, paired with lifetime technical guidance to maximize your equipment uptime.
Need a Customized Power & Transformer Solution?
Talk to our engineers to get an optimized configuration and fast quote.
Contact SalesFAQs
Can a 3000 kVA transformer feed a 4000A switchboard?
Yes. A 3000 kVA transformer delivers approximately 3,608A at 480V, making a 4000A switchboard a common match. Final breaker settings, conductor capacity, and interrupting ratings should be confirmed for the project.
Should a 3 MW mining site use 415V or 480V secondary power?
If the mining panels or PDUs are designed for 415Y/240V, supplying 415V directly can eliminate additional 480-to-415V transformers. 480Y/277V may be more practical when the site already uses standard U.S. 480V switchgear and distribution equipment.
Is 480V distribution still practical at 3000 kVA?
Yes, for a localized power block. But 3000 kVA at 480V means more than 3,600A, requiring heavy busway or multiple parallel conductors. For longer distribution distances or larger multi-megawatt campuses, medium-voltage distribution may be more scalable.
Cable or busway—which is better between a 3000 kVA
Both can work, but at this current level, close-coupled switchgear or busway can reduce the number of large parallel cable runs. The best option depends on transformer-to-switchgear distance, site layout, installation method, and equipment design.
Why is transformer impedance especially important at 3000 kVA?
Because the available fault current can become very high. A 3000 kVA, 480V transformer with 5.75% impedance has a transformer-limited fault current of roughly 62.7 kA before upstream and conductor impedance are considered.
This directly affects switchgear AIC/SCCR and arc-flash studies.
Can two 3000 kVA transformers operate in parallel for a 6 MVA site?
Yes, but they must be electrically compatible. Voltage ratio, phase relationship, tap position, polarity, and impedance must be coordinated. Poor impedance matching can cause unequal load sharing and overload one transformer before the combined 6 MVA capacity is reached.
Should utility requirements be confirmed before ordering a 3000 kVA transformer?
Yes. At the 3 MVA level, utility requirements can affect primary voltage, metering, protection, grounding, BIL, and service configuration. Confirming the utility specification early helps avoid redesign after the transformer has already entered production.
Can a 3000 kVA transformer support a 2.5 MW AI or mining load?
Yes, in many projects. A 2.5 MW load at 0.95 power factor requires approximately 2,632 kVA. Cooling, pumps, UPS losses, networking, and other auxiliary loads must still be included before confirming the final capacity.
Recommended Capacities
Discover our full lineup of three-phase pad-mounted transformers built for projects of any scale.
View All >>
1500KVA
1500 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
2000KVA
2000 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
2550KVA
2550 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
3750KVA
3750 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
3000 kVA Transformer For Bitcoin Mining | USA & Global Ready Stock
Key specifications at a glance for quick reference and confident planning.
3000 kVA
Loop / Radial
ONAN
60 Hz
Outdoor Pad-Mounted
WAREHOUSE LOCATIONS
USA • Canada • UAE • China • Global Dispatch
FAST DISPATCH
Ready Stock • Ships in 1-3 Days • DDP Door-to-Door
Product Profile
At 3 MVA, the Apexto 3000 kVA Pad-Mounted Transformer is intended for large facilities that benefit from consolidating substantial load into fewer transformer blocks. It is suitable for large mining sites, data centers, industrial campuses, and other continuous-load applications.
The higher capacity reduces the need to divide the same load among several smaller transformers, which can simplify site-level distribution in the right project architecture. High-current secondary connections, cooling performance, protection, and equipment coordination become key design considerations at this level.
Primary and secondary voltage configurations can be customized to the project, making the 3000 kVA model a practical step into large-scale power infrastructure.
Core Advantages
01. Dead-Front Dual Compartment
Features a dual-compartment design separating high and low voltage with a rigid steel barrier. Enclosed dead-front bushings ensure maximum touch safety and tamper protection.
02. Dual-Source 4-Position Switch
Equipped with a Source A/B four-position load-break switch and a tap changer, allowing operators to safely transfer, select, or isolate power without site downtime.
03. 6-Bushing Loop Feed System
Features six dead-front high-voltage bushings (H1A–H3B) with insulated caps to support loop-feed daisy-chaining, guaranteeing continuous and flexible cable routing.
04. Low-Loss Core & Windings
Built with high-grade grain-oriented silicon steel cores and precision-wound coils, delivering ultra-low electrical losses and superior short-circuit withstand capacity.
05. Complete Monitoring Gauges
Features precision dial temperature, pressure/vacuum, and oil level gauges alongside a sampling valve, ensuring continuous visibility of internal operating status.
06. LV Spade Bushings & Radiators
Features four low-voltage spade bushings (X0–X3) in a heavy-duty side throat for direct cable coupling, flanked by robust radiator banks for maximum heat dissipation.
Full Specifications
External dimensions
L:2527mm、W:1588mm、H:2134mm
Internal dimensions
L:2477mm、W:1538mm、H:2084mm
Weight
6350KG
| Rated Capacity | 3000 kVA / 3 MVA | Phase | Three Phase |
| Frequency | 60 Hz | Primary Voltage | Customized (Typical 12.47kV / 13.8kV / 24.94kV / 34.5kV) |
| Secondary Voltage | Customized (Typical 480Y/277V) | Winding Configuration | Delta / Wye / Grounded Wye, Project-Specific |
| Cooling Type | ONAN / KNAN, Project-Specific | Insulation Fluid | Mineral Oil / FR3 or Ester Fluid |
| Temperature Rise | 65°C Typical | Impedance | Typical 5.5–5.75% |
| BIL Rating | 30–150 kV, based on voltage class | Feed Configuration | Loop Feed / Radial Feed |
| Tap Changer | 5-Position Off-Circuit Tap Changer | Tapping Range | ±2 × 2.5% Typical |
| Efficiency | 99.37% | Standard | IEEE / ANSI / DOE / CSA, as applicable |
Engineering Documents
Padmount Spec Sheet
Padmount Dimensional Drawings
Padmount Installation Manual
Padmount Test & Warranty Guide
Certifications & Grid Compliance
Fully compliant with UL, CSA, IEEE/ANSI, DOE, and IEC standards. Tested and certified by international authorities to ensure maximum safety, efficiency, and instant approval by local power utilities.
UL/cUL
CSA
CESI
IEEE
IEC
EN00676
AS-NZS
GOST
Infrastructure Capabilities
We supply a full lineup of pad-mount transformers built for heavy-duty power. From 24/7 crypto mining farms to mission-critical data centers, we deliver reliable equipment designed to run non-stop.
We also offer custom engineering tailored to your exact site. From specific high and low voltages to specialized enclosure specs, we customize and deliver units in as fast as 4–6 weeks to get your project powered up on schedule.
Request a Project Quote
Tell us about your project or custom requirements. Our power systems engineers will review your specs and provide a tailored proposal.
Submit Inquiry ➔Global Project References
View All >>
4 x 3000 kVA Pad-Mounted Transformers for Utility Mining Park
Four 3000 kVA (3 MVA) padmount units deployed along the central distribution alleyway, supplying ~10MW of continuous 415V power under intense desert heat.
34.5kV
415GrdY/240V
99.48% Efficiency
2 x 3000 kVA Pad-Mounted Transformers for 2-Tier Modular Farm
Two 3000 kVA liquid-filled transformers installed to power a two-story stacked cooling container array, ensuring ultra-stable power delivery in sub-arctic climates.
2 x 3000 kVA
20 kV Class
400V / 415V
2 x 3000 kVA (3 MVA) Padmount Units for Hyperscale AI Data Center
Dual 3000 kVA step-down transformers installed adjacent to a major data center cooling facility, delivering redundant 480V/400V power for enterprise AI server halls.
13.8 kV / 20 kV
480Y / 400V
ONAN 3000 kVA
3000 kVA Padmount Transformer for 2.5MW Hydro Container Skid
Heavy-duty 3000 kVA transformer directly coupled with a 2.5MW containerized mining skid, providing precise voltage stepping from the Canadian utility grid.
3000 kVA
24.94 kV GrdY
415Y / 600V
Capabilities & Support
24-Month Quality Warranty
Enjoy peace of mind with our 24-month full warranty. If any operational issue arises with your transformer, our dedicated engineering team will resolve it rapidly and reliably.
Local Field Service Team
Whether in North America or global regions, our certified local engineering teams provide professional on-site transformer installation, energization testing, and maintenance.
24/7 Remote Video Support
Connect directly with our senior power engineers via live video for real-time installation guidance, system diagnostics, and instant troubleshooting support, anytime and anywhere.
Spare Parts & Support
We maintain an extensive inventory of genuine spare parts for fast dispatch, paired with lifetime technical guidance to maximize your equipment uptime.
Need a Customized Power & Transformer Solution?
Talk to our engineers to get an optimized configuration and fast quote.
Contact SalesFAQs
Yes. A 3000 kVA transformer delivers approximately 3,608A at 480V, making a 4000A switchboard a common match. Final breaker settings, conductor capacity, and interrupting ratings should be confirmed for the project.
If the mining panels or PDUs are designed for 415Y/240V, supplying 415V directly can eliminate additional 480-to-415V transformers. 480Y/277V may be more practical when the site already uses standard U.S. 480V switchgear and distribution equipment.
Because the available fault current can become very high. A 3000 kVA, 480V transformer with 5.75% impedance has a transformer-limited fault current of roughly 62.7 kA before upstream and conductor impedance are considered.
This directly affects switchgear AIC/SCCR and arc-flash studies.
Yes, but they must be electrically compatible. Voltage ratio, phase relationship, tap position, polarity, and impedance must be coordinated. Poor impedance matching can cause unequal load sharing and overload one transformer before the combined 6 MVA capacity is reached.
Yes. At the 3 MVA level, utility requirements can affect primary voltage, metering, protection, grounding, BIL, and service configuration. Confirming the utility specification early helps avoid redesign after the transformer has already entered production.
Yes, in many projects. A 2.5 MW load at 0.95 power factor requires approximately 2,632 kVA. Cooling, pumps, UPS losses, networking, and other auxiliary loads must still be included before confirming the final capacity.
Recommended Capacities
Discover our full lineup of three-phase pad-mounted transformers built for projects of any scale.
View All >>
1500KVA
1500 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
2000KVA
2000 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
2550KVA
2550 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
3750KVA
3750 kVA Pad Mount Three-Phase Transformer
| Primary Voltage | 2.4 kV – 34.5 kV Class |
| Secondary Voltage | 120 V – 600 V Range |
| Availability | USA & China |
Customize Your Power Solution
Share your requirements below. Our consultants will contact you via WhatsApp or email within 24 hours with a custom-matched proposal.
In-stock miners will ship within 3 business days. For bulk orders, please allow an additional 1-2 days via DHL Express, UPS, FedEx, or TNT.
Pre-order miner delivery times depend on the factory schedule. Estimated delivery dates are provided on the order page, but delays may occur due to production issues.
Shipments are processed on a first-paid, first-shipped basis. Once full payment is received, we aim to ship as quickly as possible. Payments via wire transfer (T/T) may take 3-7 business days to verify, while cryptocurrency payments typically take a few hours to 1 business day.
International shipping usually takes 5-8 business days, with remote locations potentially requiring 8-10 days.
*All sales are final and non-refundable. Please understand, this is an industry standard.
All products listed on our website are priced in US Dollars.
We accept payments via bank wire transfer or online cryptocurrency payment (BTC, ETH, KAS, USDT, USDC).
If you prefer other payment methods, please contact our sales team.
Important: All cryptocurrency payments received on the website are automatically converted to USDT. If a product is out of stock, we will contact you for a refund. The refund will be based on the USD price at the time of your original order.
We offer DDP (Delivery Duty Paid) shipping to some countries, including the United States, Canada, Russia, Dubai, and certain EU countries.
If you require DDP shipping, please contact our customer service. For countries without DDP shipping or for standard shipping, we can help reduce taxes by providing a lower invoice value.
Customs duties are not included in the total price. You will need to pay them once the goods arrive in your country. Simply contact your local logistics company to settle the fees. If needed, we can provide a commercial invoice with a declared value of your choice.
Please notify us immediately if customs requests documents, as improper filing may lead to higher fees or delays. We can provide the necessary documentation.
For new, factory-sealed miners, the warranty is typically 12 months or 6 months, depending on the factory's policy, starting from the production date.
The company is not responsible for issues resulting from failure to follow the provided instructions, specifications, or alterations to the product.
For used mining machines, there is no warranty or after-sales service; however, before shipment, we will provide mining machine testing videos to ensure you understand its performance. Once you confirm acceptance, we will proceed with full communication and arrange shipment.
Transportation and any other costs related to product returns are the responsibility of the purchaser.
The repair period will depend on the nature of the issue.
- CMCaleb Montgomery CA
Faye was very kind and helpful
Faye was very kind and helpful, even with the time difference. She quickly cleared up my doubts about the L9 miner.
Date of experience : January 31, 2025 - JPJerry Pan US
Fast Shipping
Order arrived sooner than expected - great experience with Apexto Mining!
Date of experience : March 03, 2025 - RHRephael Hanks CA
Buying miners from Apexto for 5 years
Buying miners from Apexto for 5 years - trustworthy, professional, and delivers quality!
Date of experience : March 03, 2025 - BVBruno Vargas ES
Easier than I expected. Thanks Faye
I'm very satisfied with my purchase (Elphapex Home). Additionally, I must thank Faye for the excellent service she provided; she answered all my questions whenever I needed.
Date of experience : January 20, 2025 - LCLuis Clingerman US
Fast Shipping
The customer service on WhatsApp is excellent, and shipping is fast - from Hong Kong to North America without delay. I'm very happy with the experience!
Date of experience : January 31, 2025
