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Compact Substations
Pad-Mounted Transformers
SKU: 2500KVA_34.5KV_THREE_PHASE_PAD_MOUNTED_TRANSFORMER
2500 kVA Three-Phase Pad-Mounted Transformer (ANSI C57.12.20)
Factory-direct 2500 kVA pad-mounted transformer engineered to ANSI C57.12.20 standards, ideal for underground distribution. Benefit from competitive pricing and reliable lead times directly from our ISO-certified Chinese manufacturing facility.
Compliance Standards
IEC • ANSI • IEEE • GB
Quality Inspection
100% FAT Routine Tested
Engineering CAD
2D CAD / SLD Schematics
Global Logistics
Direct Seaport CIF Export
Engineering Datasheet
Technical Parameters & Ratings
| Rated Capacity | 2500 |
|---|---|
| Primary Voltage | 34.5 kV primary / 480Y/277 V secondary (customizable) |
| Secondary Voltage | 480Y/277 V, 208Y/120 V |
| Standards Compliance | ANSI C57.12.20, IEEE, NEMA |
| Cooling Type | ONAN |
| Configuration | Dead-front, Loop feed / Radial feed |
| Vector Group | Dyn11 (or as specified) |
| Frequency | 60 Hz (ANSI) / 50 Hz (IEC) |
| Efficiency Level | 99.2% |
| Impedance (%Z) | 5.75% |
| Insulation Class | Class A (65°C average temperature rise) |
| Enclosure Rating | NEMA 3R / IP54 Tamper-Resistant Steel Enclosure |
| Voltage | 34.5 kV primary / 480Y/277 V secondary (customizable) |
| Kva | 2500 |
| Standard | ANSI C57.12.20, IEEE, NEMA |
| Cooling | ONAN |
| Efficiency | 99.2% |
| Impedance | 5.75% |
Application Scenarios
- Commercial centers, solar PV collector substations, EV fast-charging hubs, and industrial parks.
Features
- Dead-front cabinet design with compartmentalized HV and LV sections for maximum operator safety.
- Bay-O-Net expulsion fuses with current-limiting backup fuses for robust overcurrent protection.
- Corrosion-resistant NEMA 3R enclosure with tamper-proof penta-head locking hardware.
Standards
- 100% Factory Acceptance Testing (FAT) including voltage ratio, dielectric withstand, and winding resistance.
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.
XinHuan Hefei Manufacturing Plant — American-Type Pad-Mounted Substation Assembly Line
Factory Build Quality
Internal Construction & Premium Materials
Built with tier-1 certified raw materials engineered for long operational life (>30 years), superior dielectric withstand, and high short-circuit withstand capacity.
Silicon Steel Core
High-grade grain-oriented cold-rolled silicon steel with step-lap mitered joints for low $P_o$ losses.
100% Copper Windings
Electrolytic oxygen-free copper with high thermal grade insulation for surge resistance.
Loadbreak Switching
Two-position (radial) or four-position (loop feed) oil-immersed rotary loadbreak switch rated up to 630A.
ANSI Pad Protection
Bay-O-Net expulsion fuse in series with ELSP back-up fuse, automatic pressure relief valve, and liquid level gauge.
Quality Assurance
CNAS & ISO 9001 Certified
100% Factory Acceptance Testing (FAT) Protocol
Every transformer unit manufactured by XinHuan undergoes mandatory routine factory testing prior to container dispatch. Full certified routine and type test submittal reports are provided with commercial documentation:
1. Insulation Resistance
Megger test (HV to LV, HV to Earth, LV to Earth) >1000 MΩ.
2. Voltage Ratio & Vector
Turns ratio check across all taps with phase displacement check.
3. Winding DC Resistance
Precision Kelvin bridge measurement across all tap positions.
4. Short-Circuit Impedance
Load loss ($P_k$) measurement corrected to reference temp (75°C).
5. No-Load Loss & Current
Core excitation test ($P_o$ and $I_o$) at rated sinusoidal voltage.
6. AC Voltage Withstand
Power-frequency separate source test (e.g. 50kV/70kV 1 min).
7. Lightning Impulse (BIL)
Full wave & chopped wave impulse withstand (BIL up to 170kV).
8. Partial Discharge & Seals
Dead-front dielectric test, ANSI C57.12.28 tamper resistance & pressurized tank seal verification.
Logistics Intelligence
Global CIF / FOB Delivery
Export Packaging & Seaport Logistics
Export seaworthy packaging with vacuum moisture barrier, desiccants, and reinforced steel-framed containment. Typical production lead time: 4–6 weeks from drawing approval.
Production Lead Time
Standard manufacturing cycle is 4 to 6 weeks from approval of GA blueprints and single-line diagrams.
Heavy-Duty Export Packaging
Vacuum moisture barrier preservation, nitrogen blanketing, and reinforced steel-frame structural crate skids.
Direct Seaport Routes
Fast ocean freight to Port of Chancay & Callao (25-35 days), Manila, Lagos, and Middle East ports.
Equipment Video Inspection
100% TestedWatch XinHuan technicians perform routine dielectric testing, winding insulation checks, and quality inspections inside our Hefei manufacturing plant.
Every unit 100% routine tested before container loading.
Direct Factory Consultation
Need Custom Project Engineering?
Send your single-line diagram (SLD), voltage ratings, or tender specifications. Our chief electrical engineers will review and issue an actionable CIF quotation within 24 hours.
Custom Voltage Ratios
High-Altitude Derating
Short-Circuit Impedance
Third-Party FAT Witness
Engineering & Procurement FAQs
Frequently asked questions regarding specifications, certifications, and delivery for 2500 kVA Three-Phase Pad-Mounted Transformer (ANSI C57.12.20).
Please specify rated capacity (kVA), primary/secondary voltages, frequency (50/60Hz), standard (IEC/ANSI), cooling type, site altitude, and target destination port.
Manufactured and tested in strict accordance with ANSI C57.12.20, IEEE, NEMA. Certified factory routine test report (FAT) provided with every unit. Third-party inspection (SGS/BV) supported.
Standard manufacturing lead time is 4 to 6 weeks following approval of GA blueprints and single-line diagrams. Direct sea container shipping is available under FOB, CFR, or CIF terms with full customs documentation (Bill of Lading, Certificate of Origin, Test Reports).