JZP ONAN Efficient 315-2500kVA 11kv/500kV Three Phase Oil Filled Auxiliary Step Down Transformer Cu/Al
The JZP S11 three-phase oil-immersed transformer is designed for power distribution system applications where dependable step-down voltage transformation is required. With listed capacity options up to 2500kVA, multiple voltage configurations, and Cu/Al winding options, it suits technical buyers specifying transformers for medium-voltage distribution projects.
Key Features & Benefits
- Oil-immersed three-phase design supports power distribution transformer applications.
- Wide listed rated capacity range from 30kVA to 2500kVA gives flexibility across different load requirements.
- Multiple input and output voltage options help match a range of distribution system designs.
- 50Hz and 60Hz frequency compatibility supports use across different electrical network requirements.
- Copper or aluminium winding options allow buyers to specify the material required for their project.
- ONAN, ONAF and KNAF cooling methods are listed for different transformer configuration needs.
- Dyn11 and Yyn0 vector groups provide recognised configuration options for distribution applications.
- Listed standards include DOE, IEC60076, IEEE, ANSI, CSA, AS/AZS and GOST for specification alignment.
Specifications
| Product Name | Three Phase Oil Immersed Transformer |
|---|---|
| Brand | JZP |
| Model Number | S11 |
| Type | Oil-Immersed Transformer / Oil-type |
| Application | Distribution System / Power Distribution System Power Transformer |
| Rated Capacity | 30kVA~2500kVA |
| Input Voltage | 3kV, 6kV, 6.3kV, 6.6kV, 10kV, 11kV, 10.5kV, 12.47kV, 35kV, 69kV |
| Output Voltage | 110V, 220V, 380V, 400V, 415V, 440V, 480V, 10kV, 11kV |
| Frequency | 50Hz, 60Hz |
| Phase | Three |
| Coil Number | Multi Winding, Three Windings |
| Coil Structure | Disc Coil, Fully Sealed Construction, Layer Coil |
| Cooling Method | ONAN, ONAF, KNAF |
| Vector Group | Dyn11 / Yyn0 |
| Winding Material | Copper / Aluminum |
| Standards Listed | DOE, IEC60076, IEEE, ANSI, CSA, AS/AZS, GOST |
| Certifications Listed | ISO, CE, CCC, IEC, CQC |
For best fit, confirm the required capacity, voltage ratio, winding material, cooling method and vector group against your project specification before ordering.
Shipping & logistics
BestDealz handles the full freight chain so you only deal with one party in Rand.
What's included
- Factory pickup: Our Shenzhen agent collects from supplier's warehouse
- Sea freight: FCL or LCL via verified carriers
- SARS clearance: Customs duties + 15% VAT pre-paid
- SA last-mile: Door-to-door via Aramex, Courier Guy or your carrier
- Insurance: 110% CIF cargo cover included
Sea freight (standard)
| Production lead time | 15–20 days |
|---|---|
| Sea freight (Shenzhen → Durban) | 20–24 days |
| SARS clearance | 3–5 business days |
| SA last-mile delivery | 1–3 business days |
| Total door-to-door | 60–70 business days |
| Estimated arrival | 03 Sep, 2026 |
Warranty & returns
30-day returns under the Consumer Protection Act. BestDealz is the merchant of record for Class A products.
Trade Assurance dispute resolution
If goods don't match the agreed spec or arrive damaged, raise a dispute via your BestDealz dashboard within 30 days. Funds remain held under Trade Assurance until both parties agree on resolution.
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