TRANSFORMERS & ELECTRICAL COMPONENTS
APPLICATION / 01
Distribution networks
For urban and rural supply installations requiring a sealed oil-immersed transformer and an agreed electrical schedule.
MINGKONGmkelecsolution.com
Product illustration. Actual configuration varies by specification.
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S13-M · Oil-immersed distribution transformer
Sealed oil-immersed distribution transformer with catalogue ratings from 30 to 2,500 kVA and 0.4 kV LV. Review the required primary voltage, winding connection and site conditions before quotation.
- Brand
- Mingkong
- Model
- S13-M
- Supply
- Factory supply
- Voltage class
- 10 kV
- Catalogue capacity
- 30–2,500 kVA
- LV rating
- 0.4 kV
Price on enquiry · Configuration, quantity & destination
Supply scope, manufacturer information, applicable documents and warranty arrangements are confirmed in the quotation and order.
APPLICATION & DUTY
Where S13-M fits
S13-M is a sealed oil-immersed distribution transformer based on the S13 performance series. The core and winding design is coordinated with capacity-specific loss values. The on-page table provides a practical starting point for comparing the selected capacity, winding connection and impedance.
APPLICATION / 02
Industrial upgrades
For capacity replacement or new plant distribution. Provide the existing supply details and any changes to connected load or installation layout.
PRODUCT ENGINEERING
Construction & operating functions
DETAIL / 01
Sealed construction
The M suffix identifies a sealed design. The tank outline and accessory arrangement should be reviewed using the drawing for the selected capacity.
DETAIL / 02
Core and winding performance
The S13 series uses its own core/winding performance schedule. No-load loss, load loss and no-load current are separate quantities in the table and should be compared consistently.
DETAIL / 03
Connection-dependent load-loss entries
Up to 500 kVA, the table distinguishes Dyn11 and Yyn0 load losses. Identify the required connection group rather than treating both columns as one interchangeable figure.
DETAIL / 04
Capacity and impedance range
The displayed 30–2,500 kVA entries span 4%, 4.5% and 5% impedance groups. The row-based enquiry retains the capacity and impedance together.
DEFINE THE SELECTED ASSEMBLY
Configuration & installation interfaces
Match the selected transformer to the room layout, terminal arrangement, cooling clearances and approved drawings.
Factory preparation photograph · reference assembly- Voltage combination
- Listed HV alternatives are 6, 6.3, 10, 10.5 and 11 kV; LV is 0.4 kV.
- Tap and connection
- State the required ±5% or ±2 × 2.5% tapping option, vector group and rated frequency.
- Site requirements
- Normal conditions include −25 to +40 °C and altitude up to 1,000 m. Describe any different site duty for review.
Installation & connection checklist
- Provide terminal direction, cable/busbar details and phase arrangement.
- Include the available footprint and installation-access dimensions.
- Specify monitoring, protection fittings and required inspection records.
- For repeat supply, retain the same capacity, impedance, connection group and approved drawing revision.
RATING DATA
Technical parameters
30–2,500 kVACapacity entries in this table
19Listed rating configurations
4.0 / 4.5 / 5.0%Impedance options · see matching row
Compare the capacity and impedance together. You can start an enquiry from a specific row. On a small screen, scroll the table sideways.
| Capacity (kVA) | No-load current (%) | Load loss Dyn11 (W) | Load loss Yyn0 (W) | No-load loss (W) | Short-circuit impedance (%) | Enquiry |
|---|---|---|---|---|---|---|
| 30 | 1.50 | 630 | 600 | 100 | 4.0 | Request this rating ↗ |
| 50 | 1.30 | 910 | 870 | 130 | 4.0 | Request this rating ↗ |
| 63 | 1.20 | 1090 | 1040 | 150 | 4.0 | Request this rating ↗ |
| 80 | 1.20 | 1310 | 1250 | 180 | 4.0 | Request this rating ↗ |
| 100 | 1.10 | 1580 | 1500 | 200 | 4.0 | Request this rating ↗ |
| 125 | 1.10 | 1890 | 1800 | 240 | 4.0 | Request this rating ↗ |
| 160 | 1.00 | 2310 | 2200 | 280 | 4.0 | Request this rating ↗ |
| 200 | 1.00 | 2730 | 2600 | 340 | 4.0 | Request this rating ↗ |
| 250 | 0.90 | 3200 | 3050 | 400 | 4.0 | Request this rating ↗ |
| 315 | 0.90 | 3830 | 3650 | 480 | 4.0 | Request this rating ↗ |
| 400 | 0.80 | 4520 | 4300 | 570 | 4.0 | Request this rating ↗ |
| 500 | 0.80 | 5410 | 5150 | 680 | 4.0 | Request this rating ↗ |
| 630 | 0.60 | 6200 | 6200 | 810 | 4.5 | Request this rating ↗ |
| 800 | 0.60 | 7500 | 7500 | 980 | 4.5 | Request this rating ↗ |
| 1000 | 0.60 | 10300 | 10300 | 1150 | 4.5 | Request this rating ↗ |
| 1250 | 0.50 | 12000 | 12000 | 1360 | 4.5 | Request this rating ↗ |
| 1600 | 0.50 | 14500 | 14500 | 1640 | 4.5 | Request this rating ↗ |
| 2000 | 0.40 | 18300 | 18300 | 1940 | 5.0 | Request this rating ↗ |
| 2500 | 0.40 | 21200 | 21200 | 2290 | 5.0 | Request this rating ↗ |
Checked against the original transformer catalogue, PDF page 24, printed page 38. Through 500 kVA, the source slash-separated loss values correspond to Dyn11 / Yyn0 respectively. Above 500 kVA the source provides one load-loss value, repeated in both columns. HV options: 6 / 6.3 / 10 / 10.5 / 11 kV; taps: ±5% or ±2 × 2.5%; LV: 0.4 kV.
Technical sheets & drawings
Catalogue reference data for the labelled configuration. The agreed technical schedule defines the supplied equipment.
S13-M rating table and vector-group note · original PDF p.24 View reference
DOCUMENTS · DELIVERY · SUPPORT
Technical coordination & after-sales enquiries
Explore transformer manufacturing ↗ · View equipment & application references ↗
Confirm the order documents
Agree the selected specifications, applicable drawings, inspection records and identification requirements in the quotation and order.
Coordinate delivery
Include quantity, destination, packing requirements and preferred trade terms. Confirm transport scope and the requested delivery schedule with the quotation.
Request technical support
For an existing unit, provide its model, nameplate or order reference and a description of the issue. Include relevant photos or records already available. Warranty and service scope follow the agreed order terms.
Contact about this model ↗START WITH WHAT YOU HAVE
Prepare a quotation for this equipment.
Choose your enquiry type. Start with the information you have.
Price on enquiry
Quotations are prepared for the selected configuration, quantity and destination. Currency, validity, delivery terms, freight and any applicable duties or taxes are specified in the quotation.
Project procurement
New installations & project tenders
Discuss a project ↗What to prepare
Send the load schedule, HV/LV voltages, kVA and site conditions. Identify loss limits, vector group and required tests.
Distributor procurement
Model lists & repeat orders
Discuss supply requirements ↗What to prepare
List preferred kVA and voltage combinations, destination requirements, quantities and spare-parts or documentation needs.
Panel & equipment builders
Equipment integration & matching
Discuss an assembly ↗What to prepare
Provide the substation or equipment layout, terminal positions, cooling arrangement and monitoring interfaces.
Repair & replacement
Identify an existing unit or part
Identify a replacement ↗What to prepare
Send the nameplate, existing dimensions, cable or busbar interfaces and the reason for replacement.
Illustrative enquiry scenarios.
Selection checklist for S13-M
- Required kVA, HV/LV voltages, frequency and vector group
- Tapping arrangement, impedance and required loss limits
- Indoor/outdoor site, ambient temperature, altitude and ventilation
- Cable or busbar connections, installation dimensions, monitoring and test documents
- Provide terminal direction, cable/busbar details and phase arrangement.
- Include the available footprint and installation-access dimensions.
- Specify monitoring, protection fittings and required inspection records.
- For repeat supply, retain the same capacity, impedance, connection group and approved drawing revision.
From enquiry to an agreed supply
- Share the requirementModel, duty, quantity and destination.
- Review the configurationResolve ratings, interfaces and site conditions.
- Agree the technical scheduleScope, drawings, tests, price and delivery terms.
- Confirm delivery documentsAgree packing, identification and the applicable inspection records.
Testing, warranty terms and after-sales scope are to be agreed in the quotation and order documents for the selected configuration.
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Mingkong Transformer Selection Guide · Updated 24 October 2026 · Chinese / English
For a quotation, include your required model, rating, quantity and operating conditions.
Plan your enquiry
Use these guides to prepare the information for equipment selection and quotation.