Oil-Immersed Transformers · Custom & Industrial Oil
2500 kVA 15kV/400V Three-Phase Oil Distribution Transformer
This 2500 kva /400v three-phase oil distribution transformer is configured for a...
Capacity Class — 2500 kVA
2500 kVA Distribution & Power Transformers
2500 kVA is the most widely searched capacity for heavy industrial facilities, commercial complexes, substation step-down feeders, and renewable energy plants. XinHuan manufactures IEC 60076 and ANSI C57.12 2500 kVA oil-immersed, cast resin dry-type, anti-corrosion, and high-altitude transformers at 11 kV, 22 kV, 33 kV, and 35 kV.
2500 kVA
rating
11–35 kV
HV class
IEC 60076
standard
24h
quote response
Product Range
2500 kVA Distribution & Power Transformers — 53 Models Available
Standard and custom capacities available for global utility, industrial, and commercial projects. View complete catalog →
Dry-Type Transformers · Harmonic K-Factor (IEEE C57.110)
2500 kVA K-20 Multi-Megawatt VFD Cast Resin Power Transformer (33kV/415V)
2500 kVA primary voltage K-20 cast resin power transformer for direct...
Compact Substations · Pad-Mounted Transformers
2500 kVA Three-Phase Pad-Mounted Transformer (ANSI C57.12.20)
Factory-direct 2500 kVA pad-mounted transformer engineered to ANSI C57.12.20...
Switchgear & Control · Low Voltage (GCK/GCS/MNS)
Three-Phase Main Low Voltage Distribution Panel (MLVDP) - 2500A
This three-phase main low voltage distribution panel (mlvdp) - 2500a is intended...
Isolation Transformers · VPI & Isolation
2500 kVA Three-Phase Dry-Type Isolation Transformer
This 2500 kva three-phase dry-type isolation transformer is designed for indoor...
Oil-Immersed Transformers · Custom & Industrial Oil
2500 kVA 11kV Three-Phase On-Load Tap Changer (OLTC) Transformer
This 2500 kva three-phase on-load tap changer (oltc) transformer is configured...
Dry-Type Transformers · Special Voltage Dry-Type
2500 kVA Indoor Three-Phase Dry-Type Transformer for Buildings
This 2500 kva indoor three-phase dry-type transformer for buildings is designed...
Compact Substations · Smart & Custom Housing
2500 kVA Compact Substation for Coastal Tropical Climate
This 2500 kva compact substation for coastal tropical climate is an integrated...
Switchgear & Control · Low Voltage (GCK/GCS/MNS)
400V/2500A Fixed Type Low Voltage Distribution Panel
This 400v/2500a fixed type low voltage distribution panel is intended for...
Isolation Transformers · VPI & Isolation
2500 kVA Three-Phase VPI Vacuum Pressure Impregnated Dry Transformer
This 2500 kva three-phase vpi vacuum pressure impregnated dry transformer is...
Oil-Immersed Transformers · Custom & Industrial Oil
2500 kVA 33kV Three-Phase Smart Monitoring Power Transformer
This 2500 kva three-phase smart monitoring power transformer is configured for a...
Dry-Type Transformers · Special Voltage Dry-Type
2500 kVA Amorphous Alloy Core Three-Phase Dry Transformer
This 2500 kva amorphous alloy core three-phase dry transformer is designed for...
Technical Overview
2500 kVA — High Capacity Power & Distribution Core
2500 kVA (2.5 MVA) transformers bridge medium-voltage distribution grids with heavy industrial loads, mining facilities, data centers, and renewable energy substations. Available in both oil-immersed (S11/S13/S22 series) and cast resin dry-type (SCB13/SCB14 series) configurations.
XinHuan manufactures 2500 kVA units to IEC 60076 as the primary standard, with GB/T 1094 and ANSI C57.12 compliance. All 2500 kVA transformers undergo full routine testing (winding resistance, voltage ratio, phase displacement, short-circuit impedance, load and no-load losses, separate-source AC withstand voltage, and induced overvoltage withstand voltage).
Key options include: ONAN/ONAF dual cooling, off-circuit tap changer (±2 x 2.5%) or on-load tap changer (OLTC), Buchholz relay, magnetic oil level gauge, winding thermometer with alarm contacts, and IP23/IP54 protective enclosures for dry-type units.
2500 kVA Distribution & Power Transformers — Key Specifications
-
Rated Capacity
2500 kVA (2.5 MVA)
-
Primary Voltage
11 kV, 22 kV, 33 kV, 35 kV
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Secondary Voltage
0.4 kV, 0.415 kV, 0.69 kV, 6.3 kV, 10.5 kV
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Standard
IEC 60076-1 / GB/T 1094 / ANSI C57.12
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Cooling Class
ONAN / ONAF (Oil Immersed) | AN / AF (Dry Type)
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Vector Group
Dyn11, Yyn0, YNd11
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No-Load Loss
Engineered to low-loss S13/S22 and SCB14 standard
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Short Circuit Impedance
6.0% – 8.0% (standard per IEC)
IEC / IEEE Reference Data
2500 kVA Distribution & Power Transformers — Standard Capacity & Loss Parameters
| Rated Capacity | Voltage Ratio (HV / LV) | No-Load Loss (P0) | Load Loss (Pk) | Impedance (Uk%) | No-Load Current (I0%) | Approx. Total Weight |
|---|---|---|---|---|---|---|
| 2500 kVA (S13 Oil) | 11 / 0.415 kV | 2,290 W | 21,500 W | 5.0% | 0.4% | 6,950 kg |
| 2500 kVA (S20 Eco) | 11 / 0.415 kV | 1,850 W | 18,200 W | 5.0% | 0.3% | 7,400 kg |
| 2500 kVA (S13 Oil) | 33 / 0.415 kV | 2,550 W | 21,000 W | 6.5% | 0.4% | 7,600 kg |
| 2500 kVA (S13 Oil) | 33 / 11 kV | 2,480 W | 20,500 W | 6.5% | 0.4% | 7,850 kg |
| 2500 kVA (ANSI 60Hz) | 13.8 / 0.48 kV | 2,580 W | 17,900 W | 6.0% | 0.4% | 7,100 kg |
| 2500 kVA (ANSI Pad) | 34.5 / 0.48 kV | 2,750 W | 19,200 W | 6.0% | 0.4% | 7,800 kg |
| 2500 kVA (SCB14 Dry) | 11 / 0.415 kV | 3,850 W | 18,200 W | 6.0% | 0.5% | 6,800 kg |
| 2500 kVA (SCB14 Dry) | 33 / 0.415 kV | 4,350 W | 20,500 W | 7.0% | 0.5% | 7,500 kg |
Guaranteed parameters based on standard factory testing. Custom loss levels (Tier-2 Ecodesign, DOE 2016, and high-efficiency low-noise designs) are engineered on request.
2500 kVA Distribution & Power Transformers — 3D Engineering Anatomy Cutaway
High-precision 3D component breakdown of 2500 kVA Distribution & Power Transformers illustrating CRGO silicon steel core assembly, electrolytic copper windings, insulation, and protection accessories.
High-Grade Silicon Core
Electrolytic Copper Coil
Off-Circuit / OLTC Tap Switch
Buchholz & Temp Relays
2500 kVA Distribution & Power Transformers — Factory Acceptance Testing (FAT)
Watch routine factory testing and quality control inspections inside XinHuan's manufacturing facility.
100% full routine tests (IEC 60076) conducted before export packing.
Engineering Submittal & Layout Workbench
Substation Room Fit & Multi-Equipment CAD Footprints
Select your equipment type and capacity to inspect verified GA engineering CAD line drawings, Single Line Diagrams (SLD), dimensions (L × W × H), roller gauge, and submittal clearances before procurement.
Available Ratings:
11kV / 33kV Dual Voltage
IEC 60076 / IEEE Compliant
100% Routine Factory Tested
Export Nitrogen / Seaworthy Pack
1000 kVA Technical Dimensions
IEC 60076-1International utility & industrial submittal specifications
| Overall Length (L) | 1,750 mm |
|---|---|
| Overall Width (W) | 1,120 mm |
| Overall Height (H) | 1,780 mm |
| Roller Wheel Track Gauge (D) | 820 mm |
| Total Equipment Net Weight | 3,820 kg |
| Min Substation Clearance | 1,000 mm surrounding |
| Rated Voltage / System | 11 kV / 33 kV Dual Primary |
| Applicable Standard | IEC 60076-1 / IEEE C57 |
Download Technical Data Sheet (PDF)
Request Factory Engineering Submittal Package
Full CAD DXF/DWG vector footprints, 3D STEP models, and custom project submittals provided within 2 hours upon request.
Factory Facility & Verification
Real Completed Transformers & Factory Workshop
Direct visual proof of XinHuan's manufacturing capability in Hefei, China. Unedited photographs showing our finished distribution transformer workshop, marked finished products area, cast resin dry-type stock, and export container loading.
Finished Transformer Workshop
Real completed units staged in orderly rows, ready for final project inspection, FAT witnessing, and international dispatch.
Dry-Type Transformer Bay
F/H-class cast resin coils and harmonic mitigation dry-type distribution transformers in stock.
Finished Products Area
Clear production-stage segregation and routine quality verification for procurement teams prior to container packaging.
Active Assembly Floor
Precision silicon steel core stacking, copper coil winding assembly, and tank fabrication.
Vacuum Autoclave Drying
Heavy-duty vacuum autoclave drying process ensuring zero residual moisture in coil insulation.
Export Preparation & Shipping
Direct container packing and heavy-duty ocean freight loading outside our Hefei facility.
Quality & Compliance
Certified B2B Manufacturing & Laboratory Performance
Every transformer, compact substation, and switchgear unit is engineered under audited ISO quality management systems and type-tested according to IEC 60076 and ANSI C57 international standards.
IAF / CNAS Accredited
ISO 9001:2015 Quality System
Certified Quality Management System covering design, coil winding, vacuum drying, oil filling, and routine testing of 10kV–35kV distribution transformers.
Environmental System
ISO 14001:2015 Environmental
Environmental Management System certifying low-loss eco-designed core assemblies, zero PCB insulation oil, and environmentally safe production controls.
Occupational Health
ISO 45001:2018 Safety System
Occupational Health and Safety Management System ensuring safety containment in high-voltage testing bays and factory assembly protocols.
CNAS Lab Type Tests
IEC 60076 & GB Type Tests
Complete routine and type test records (temperature rise, impulse voltage withstand, short-circuit withstand) conducted at CNAS-accredited national research institutes.
SGS Audited Supplier
SGS Verified Manufacturer Audit
On-site factory audit certificate by SGS / Made-in-China, verifying manufacturing premises, export capacity, assembly lines, and legal qualification.
≥180 Units/Yr Export
International Delivery Certificate
Verified annual supply performance and delivery certificate for overseas power grid EPC and industrial infrastructure projects (Mozambique, Nigeria, Kenya, SEA).
Technical Q&A
Frequently Asked Questions — 2500 kVA Distribution & Power Transformers
2500 kVA is the maximum rating typically permitted in compact prefabricated substations and indoor distribution rooms while remaining transportable in standard dry-van containers. It supplies approximately 3,478 Amperes at 415V, making it the workhorse capacity for heavy factories, processing mills, multi-megawatt data halls, and solar farm inverter stations.
All XinHuan 2500 kVA transformers are designed and verified to withstand the dynamic and thermal effects of a external short circuit per IEC 60076-5. Windings are wound with high-tensile copper or work-hardened aluminum, clamped with heavy-duty structural steel frames and hydraulic pre-compression to prevent coil deformation.
An OCTC (standard ±2×2.5%) requires de-energizing the transformer to manually change tap positions, suitable for networks with stable grid voltage. An OLTC (e.g. ±8×1.25% or ±4×2.5%) adjusts tap positions under load automatically via an AVR relay, vital for grids with severe voltage fluctuations or renewable power feed-in.
Equipping an oil-immersed unit with ONAF dual-speed cooling fans increases continuous throughput from 2500 kVA to 3150 kVA (+26%). For cast-resin dry-type units, adding cross-flow cooling fans (AF) boosts continuous capacity from 2500 kVA to 3300 kVA (+33%).
Standard accessories include: dual-float Buchholz relay (alarm + trip), multi-contact magnetic oil level gauge, dial thermometer with max indicator and micro-switches, rapid pressure relief valve with directional discharge nozzle, and dehydrating silica gel breather.
Yes. For successful parallel operation, both units must have identical voltage ratio, same vector group (e.g. Dyn11), short-circuit impedance matching within ±10% tolerance, and identical polarity. XinHuan custom-engineers impedance matching specifically for parallel substation pairs.
A typical 2500 kVA 11/0.415kV oil transformer measures approximately 2,450 × 1,650 × 2,250 mm with a total weight of ~6,950 kg. It fits securely inside a standard 20-foot GP ocean shipping container, with wheels detached and strapped to heavy wooden skids.
Please provide: primary voltage (11kV, 22kV, 33kV, or 34.5kV), secondary voltage (400V, 415V, 480V, or 690V), oil or dry type, conductor material (copper or aluminum), cooling (ONAN or ONAF), tap changer type (OCTC or OLTC), and destination port for an authoritative CIF proposal.
Export Markets
Where 2500 kVA Distribution & Power Transformers Are Supplied
Engineering Reference Silo
Transformer Category Pillars & International Standards
Engineering Link Magnets & CAD Resources:
2500 kVA Distribution & Power Transformers — Direct Factory Quotation
Request Engineering Submittals & Price
Include capacity (kVA), primary voltage (e.g. 11kV/33kV), oil or dry type, vector group, destination port, and required quantity. Our engineers respond with certified data sheets within 24 hours.