Product overview
Sealed oil-immersed distribution transformers for 10 kV and 20 kV networks, with corrugated tanks and project-specific winding and tapping arrangements.
JIADEST / 10 kV / 20 kV Oil-Immersed Distribution Transformers
10 kV / 20 kV Oil-Immersed Distribution Transformers
Manufacturer’s series: S11 / S13 / S20 / S22
Sealed oil-immersed distribution transformers for 10 kV and 20 kV networks, with corrugated tanks and project-specific winding and tapping arrangements.
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Oil-immersed distribution transformer with a corrugated tank and top-mounted bushings.
Configuration review
Specify the required rated power in kVA or MVA, primary and secondary voltages, frequency, installation conditions and applicable project requirements. Consult the original technical sheets for the published design information.
Technical specifications.
| Parameter | Published specification |
|---|---|
| Voltage class | 10 kV / 20 kV |
| Series designations | S13, S20, S22 |
Models & configurations.
Designations are retained as published. Separate rows or variants with the same designation remain distinct in the relevant tables.
- S11-M-315/10315 kVA · 10 kV
- S11-M-2000/102000 kVA · 10 kV
- S13-M-630/10630 kVA · 10 kV
- S13-M-2500/10-NX32500 kVA · 10 kV
- S20-M-2500/10-NX22500 kVA · 10 kV
- S22-M-2500/10-NX12500 kVA · 10 kV
Documented model designations and ratings
| Model | Rated capacity (kVA) | Voltage class (kV) | Scope / configuration note |
|---|---|---|---|
| S11-M-315/10 | 315 | 10 | Brochure / model-specific documentation; confirm selected configuration |
| S11-M-2000/10 | 2000 | 10 | Brochure / model-specific documentation; confirm selected configuration |
| S13-M-630/10 | 630 | 10 | Brochure / model-specific documentation; confirm selected configuration |
| S13-M-2500/10-NX3 | 2500 | 10 | Brochure / model-specific documentation; confirm selected configuration |
| S20-M-2500/10-NX2 | 2500 | 10 | Brochure / model-specific documentation; confirm selected configuration |
| S22-M-2500/10-NX1 | 2500 | 10 | Brochure / model-specific documentation; confirm selected configuration |
ENGINEERING SELECTION / INDUSTRY BENCHMARKS
Compare losses and impedance.
Use these published international-market examples to discuss your efficiency target and network requirements.
| Rated power (kVA) | Voltage class scope (kV) | No-load loss P0 (W) | Load loss Pk (W) | Short-circuit impedance uk (%) |
|---|---|---|---|---|
| 1000 | Up to 24 | 693 | 7600 | 6 |
| 1600 | Up to 24 | 1080 | 12000 | 6 |
| 2500 | Up to 24 | 1575 | 18500 | 6 |
| 1000 | Up to 36 | 796 | 8360 | 6 |
| 1600 | Up to 36 | 1242 | 13200 | 6 |
| 2500 | Up to 36 | 1811 | 20350 | 6 |
The voltage-class limits above are source-table headings, not voltage ratios. P0 and Pk are different loss quantities. Compare ratings only with matching voltage class, frequency, loss evaluation conditions and test basis; request the applicable load-loss reference temperature.
Reference source & basis
Values transcribed from Eaton’s published liquid-immersed transformer technical tables , checked 2 November 2026. The IEC design standard and the EU efficiency requirements are separate specifications.
JIADEST / TECHNICAL SELECTION GUIDE
Oil-immersed distribution transformer selection.
Start your specification with the reference ratings and configuration items below. Send the combination your project needs for engineering review.
Model families
S11 / S13 / S20 / S22 are industry series references. The applicable JIADEST model and design must be confirmed with the quotation.
| Parameter | Reference for your inquiry |
|---|---|
| Rated power references | 30–2,500 kVA; nominate the capacity required for your project. |
| Primary voltage references | 6, 6.3, 10, 11, 13.8, 22 or 33 kV; specify the actual rated voltage and insulation level. |
| Secondary voltage references | 0.4, 0.415 or 0.433 kV; other requirements can be submitted for review. |
| Number of phases | Three-phase reference configurations. |
| Rated frequency | Specify 50 Hz or 60 Hz; each rating requires a corresponding design. |
| Vector group | Dyn11 or Yyn0 reference arrangements; confirm against the system requirements. |
| Cooling method | ONAN reference configuration; other cooling duties require a separate review. |
| Tap changer / tapping range | Off-circuit reference: ±2 × 2.5%. Specify any different range or on-load requirement. |
| Winding material | Specify copper or aluminum; electrical and mechanical ratings must match the selected design. |
| Tank / insulating liquid | Specify hermetically sealed or conservator construction, and the required insulating liquid. |
| Site conditions | State ambient temperature, altitude, indoor/outdoor location and corrosion conditions. |
| Standards for review | Identify the applicable IEC 60076 requirements or the project-specified standard and edition. This guide does not establish conformity. |
19 REFERENCE CAPACITY RATINGS / 30–2,500 kVA
Choose a reference capacity
Each row is an illustrative starting point for an inquiry, not a confirmed stock model or a complete product datasheet. The voltage and frequency shown do not limit your project request; specify any required changes in the form.
| Rated power | Primary / secondary | Frequency | Next step |
|---|---|---|---|
| 30 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 50 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 63 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 80 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 100 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 125 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 160 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 200 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 250 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 315 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 400 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 500 kVA | 11 / 0.415 kV | 50 Hz | Request review |
| 630 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 800 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 1,000 kVA | 11 / 0.415 kV | 50 Hz | Request review |
| 1,250 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 1,600 kVA | 11 / 0.415 kV | 50 Hz | Request review |
| 2,000 kVA | 10 / 0.4 kV | 50 Hz | Request review |
| 2,500 kVA | 10 / 0.4 kV | 50 Hz | Request review |
Performance and drawing data
Request these design-specific values with your quotation. They cannot be determined from the series name or rated capacity alone.
- No-load / load losses
- To be stated in the approved technical schedule, with reference temperature and tolerances.
- Short-circuit impedance
- To be agreed for the voltage ratio, rated power and system fault requirements.
- Insulation and sound levels
- To be confirmed against the selected design and applicable test requirements.
- Dimensions / total mass
- To be provided on the approved outline drawing; enclosure and accessories affect the result.
- Oil mass / volume
- Applicable to oil-immersed units only; mass in kg and volume in litres must be specified separately.
- Test reports / conformity documents
- Request documents identifying the actual manufacturer, model, scope and applicable standard.
About these reference configurations
Prepared from public industry product information, with conflicting or design-specific performance values excluded. Industry examples do not verify JIADEST ratings or certifications.
DIMENSIONS / CONNECTIONS / SOURCE DATA
Technical information and original product sheets.
The original sheet retains all dimensioned drawings, connection diagrams, table footnotes and published values. It is supplied in its original language for direct verification against the English specification.
Open original sheet at native resolutionView complete original technical sheet (English)
Original brochure technical sheet 2 TALK TO JIADEST
Discuss your 10 kV / 20 kV Oil-Immersed Distribution Transformers requirements.
Use the exact model, voltage, current or power rating, duty cycle and drawing reference when requesting a quotation. Confirm source discrepancies and project-specific requirements in the approved technical agreement.