View full-resolution photograph ↗Top-mounted bushings & terminal layout
View the bushing arrangement, tank cover and corrugated cooling surfaces. Specify cable or busbar connections and installation clearances when requesting a configuration.
JIADEST / PRODUCT CATEGORY
Oil-Immersed Transformers
Oil-immersed power and distribution transformers for utility networks, substations and overhead distribution.
OIL-IMMERSED TRANSFORMERS / EQUIPMENT DETAILS
Explore the equipment.
Explore product views, workshop scenes and close-up construction details. Compare corrugated tanks, conservators, bushings and external accessories, then review the documented ratings for your project.
View full-resolution photograph ↗
View full-resolution photograph ↗Conservator & radiator arrangement
This configuration shows an oil conservator above the main tank and external radiator banks. Cooling arrangements, accessories and overall dimensions are defined for the selected transformer.
View full-resolution photograph ↗Workshop equipment view
A workshop view shows the relationship between the main tank, conservator and radiator banks. Use the approved general arrangement drawing to plan handling, access and installation.
View full-resolution photograph ↗Distribution equipment overview
An equipment-yard view shows multiple oil-immersed distribution units and their external layouts. For multi-unit projects, specify the quantity, individual ratings and connection arrangements in your inquiry.
View full-resolution photograph ↗Monitoring accessories & terminals
A close-up highlights the terminal connections, bushings and tank-mounted monitoring accessories. Confirm the required instruments, indication and alarm interfaces for the selected configuration.
View full-resolution photograph ↗Conservator-equipped workshop units
The workshop view shows conservator-equipped units with different tank and cooling arrangements. Review the approved dimensions, lifting provisions and access requirements when planning installation.
Photographs illustrate equipment construction. Confirm the selected model, ratings and accessories in the technical specification and approved drawings.
7 PRODUCT SERIES / MODELS & DATA
Choose by product duty.
Oil-immersed distribution transformers
Distribution and overhead-network transformer series.
10 kV / 20 kV Oil-Immersed Distribution Transformers
10 kV / 20 kV Oil-Immersed Distribution Transformers ↗
Series: S11 / S13 / S20 / S22
1 technical tableSealed oil-immersed distribution transformers for 10 kV and 20 kV networks, with corrugated tanks and project-specific winding and tapping arrangements.
- Voltage class
- 10 kV / 20 kV
- Series designations
- S13, S20, S22
6 published model designations
S11-M-315/10 · S11-M-2000/10 · S13-M-630/10 · S13-M-2500/10-NX3 · S20-M-2500/10-NX2 …
Preview published data
| 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 |
10 kV / 20 kV Amorphous Alloy Oil-Immersed Transformers
10 kV / 20 kV Amorphous Alloy Oil-Immersed Transformers ↗
Series: SH, SBH15-M-2500/10
1 technical tableAmorphous-alloy-core, oil-immersed distribution transformers for 10 kV and 20 kV networks, designed to reduce no-load losses.
- Voltage class
- 10 kV / 20 kV
- Series designations
- SH, SBH15-M-2500/10
1 published model designations
SBH15-M-2500/10
Preview published data
| Model | Rated capacity (kVA) | Voltage class (kV) | Scope / configuration note |
|---|---|---|---|
| SBH15-M-2500/10 | 2500 | 10 | Brochure / model-specific documentation; confirm selected configuration |
Single-Phase Pole-Mounted Transformers
Single-Phase Pole-Mounted Transformers ↗
Series: DH15-M.R
1 technical tableDH15-M.R single-phase pole-mounted transformers for overhead distribution. The catalogue also documents a separately designated D13-M-50/10 single-phase unit.
- Series designations
- DH15-M.R
1 published model designations
D13-M-50/10
Preview published data
| Model | Rated capacity (kVA) | Voltage class (kV) | Scope / configuration note |
|---|---|---|---|
| D13-M-50/10 | 50 | 10 | Separately designated single-phase unit; not a DH15-M.R model |
Oil-immersed power transformers
35 kV to 220 kV power transformer series.
35 kV oil-immersed power transformers for substation and industrial distribution duties. Specify voltage ratio, tapping arrangement and required load duty.
- Voltage class
- 35 kV
1 published model designations
SZ11-2500/35
Preview published data
| Model | Rated capacity (kVA) | Voltage class (kV) | Scope / configuration note |
|---|---|---|---|
| SZ11-2500/35 | 2500 | 35 | Brochure / model-specific documentation; confirm selected configuration |
66 kV oil-immersed power transformers with a published series capacity range of 630–63,000 kVA. Confirm the individual rating and winding configuration.
- Voltage class
- 66 kV
- Published capacity range
- 630–63000 kVA
110 kV oil-immersed power transformers for high-voltage substations and grid connections. Ratings, insulation levels and cooling arrangements are selected for the project.
- Voltage class
- 110 kV
220 kV oil-immersed power transformers for transmission and substation applications. The approved technical schedule defines the exact power rating and winding configuration.
- Voltage class
- 220 kV
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.
PROJECT SPECIFICATION
Prepare your inquiry.
Send the required ratings, application and available drawings. Refer to the published model tables for the documented design.
- 01Rated power and supply configuration
- 02Input and output voltage, frequency and phase
- 03Load duty, cooling and installation conditions
- 04Required dimensions, tests and documentation
- 05Quantity, destination and required delivery date
TALK TO JIADEST
Discuss your oil-immersed transformers requirements.
Share your rated capacity, voltages, application and destination. Our team can review the configuration and documentation required for your order.