Ref: XH-SUB-2026-0424
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-2026-0424
Date: 2026-09-04
Standard: IEC 60076 / GB/T 1094 / ANSI C57
Oil-Immersed Transformers
20 MVA 66kV/11kV 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 | 20 MVA (20,000 kVA) |
| High Voltage | 66.0 kV |
| Low Voltage | 11.0 kV / customized |
| Frequency | 50 Hz / 60 Hz |
| Phase | Three Phase |
| Cooling Method | ONAN / ONAF optional |
| Vector Group | YNd11 / YNyn0 / customized |
| Tap Changer | On-load tap changer (OLTC) / Off-circuit optional |
| Tapping Range | +/-8 x 1.25% (OLTC) / +/-2 x 2.5% (OCTC) |
| Winding Material | Copper |
| Core Material | CRGO silicon steel, grain-oriented |
| Insulation Medium | Mineral insulating oil |
| Standard | IEC 60076 design reference |
| Installation | Outdoor substation / indoor GIS substation |
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-2026-0424 — Confidential Technical Datasheet