Ref: XH-SUB-2026-0031
XINHUAN
Submittal Package
Anhui XinHuan Electrical Power Equipment Co., Ltd. | Hefei Manufacturing Base
CNAS Test Certified | ISO 9001:2015 | ISO 14001:2015 Registered OEM
SUBMITTAL REF: XH-SUB-2026-0031
Date: 2026-09-04
Standard: IEC 60076 / GB/T 1094 / ANSI C57
Oil-Immersed Transformers
12500 kVA 33kV Three-Phase Oil-Immersed Power Transformer
Submittal Specification Datasheet & Engineering Technical Parameters
1. Electrical Technical Parameters & Ratings
| Parameter Specification | Design Rating & Certified Value |
|---|---|
| Rated Capacity | 2500 kVA |
| Primary Voltage (U1) | 33,000 V (33 kV) |
| Secondary Voltage (U2) | 415 V / 240 V (3-Phase 4-Wire) |
| Vector Group | Dyn11 |
| Rated Frequency | 50 Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Primary Current (I1) | 43.74 A |
| Secondary Current (I2) | 3478.0 A |
| Guaranteed No-Load Loss (P0) | 2300 W |
| Guaranteed Load Loss (Pk at 75°C) | 17500 W |
| Short-Circuit Impedance (Uk) | 5.0% |
| HV Insulation Level | LI 170 / AC 70 (33kV Class) |
| Temperature Rise Limits | Top Oil ≤ 50K, Winding ≤ 55K (45°C Ambient) |
| Creepage Distance | ≥ 31 mm/kV (Outdoor Tropicalized Porcelain) |
| Core & Coil Weight | 3600 kg |
| Insulating Oil Weight | 2100 kg |
| Total Assembled Weight | 7200 kg |
| Overall Footprint (L×W×H) | 2100 mm × 1350 mm × 2200 mm |
| Governing Standards | IEC 60076, BS 171, SON NIS, NERC Code |
2. 2D AutoCAD General Arrangement (GA) Drawing & Dimensional Profile
Figure 2.1 — 2D AutoCAD Dimensional Submittal Schematic
Dimensional & Installation Requirements
- Foundational Base: Steel channel Skid / Sub-station Pad Mounting.
- Bushings Orientation: HV top-mounted / side-cabinet entry option.
- Grounding Terminals: Dual M12 copper grounding pads on diagonal corners.
- Enclosure Protection: IP54 Outdoor Corrosive C4/C5 Marine Paint Coating.
- CAD Drawing File: Request `.DXF` or `.DWG` blocks from sales engineering.
3. Factory Acceptance Testing (FAT) & Routine Test Protocol
Every transformer manufactured by XinHuan undergoes 100% routine inspection in accordance with IEC 60076-1 before dispatch. Routine test certificates are included in the shipment package.
1. Winding Resistance Measurement (HV & LV)
2. Voltage Ratio & Vector Group Phase Displacement
3. Short-Circuit Impedance & Load Loss Test
4. No-Load Loss ($P_o$) & Excitation Current Test
5. Separate-Source AC Dielectric Withstand Test
6. Induced Overvoltage Withstand Test (DVWV)
7. Insulation Resistance & Polarization Index (Megger)
8. Hermetic Tank Pressure Leakage & Oil BDV Test
4. Seaport Logistics, Packaging & Warranty Terms
Export Packaging
IPPC fumigated solid wooden crate skid with vacuum moisture foil barrier.
Primary Delivery Ports
CIF Chancay, Callao, Apapa, Mombasa, Manila, Jakarta, Santos, & Valparaiso.
Factory Warranty
36 Months Full Replacement / Factory Engineering Warranty against defects.
Anhui XinHuan Electrical Power Equipment Co., Ltd.
Factory Address: Industrial Park, Hefei City, Anhui Province, China | Export Dept: [email protected]
Submittal Document Code: XH-SUB-2026-0031 — Confidential Technical Datasheet