TRANSFORMERS & ELECTRICAL COMPONENTS
APPLICATION / 01
Industrial substations
For receiving power from a 35 kV network and supplying the required downstream voltage. Include the substation single-line diagram and load requirement.
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Product illustration. Actual configuration varies by specification.
Open product image ↗Transformers
S11 · 35 kV · 35 kV oil-immersed transformer
35 kV oil-immersed power transformer with off-circuit voltage adjustment.
- Brand
- Mingkong
- Model
- S11 · 35 kV
- Supply
- Factory supply
- Voltage class
- 35 kV
- Tap regulation
- Off-circuit
- Winding arrangement
- Three-phase, two windings
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 S11 · 35 kV fits
S11 35 kV is an oil-immersed power-transformer family with off-circuit voltage adjustment. It covers distribution and power-transformer duties with different capacity and secondary-voltage arrangements. A complete enquiry should therefore state both winding voltages and the capacity, rather than only the 35 kV class.
APPLICATION / 02
Distribution transformation
For network projects selecting a two-winding oil-immersed transformer with off-circuit tapping and an agreed performance schedule.
PRODUCT ENGINEERING
Construction & operating functions
DETAIL / 01
Core clamping frame
Steel ties or upper and side clamping members form a frame around the assembly. The construction supports the mechanical arrangement of the core and winding system.
DETAIL / 02
Off-circuit tapping
S11 is identified separately from the SZ11 on-load-regulating series. Specify the off-circuit tap range and the expected network-voltage variation.
DETAIL / 03
Multiple secondary arrangements
The family includes different low-voltage combinations across its capacity tables. A distribution-transformer rating and a larger power-transformer rating are not defined by the same data block.
DETAIL / 04
Cooling and physical configuration
Cooling arrangement, fittings and tank outline depend on the selected rating. The final drawing should be coordinated with foundation, transport access and electrical connections.
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- Winding voltages
- Provide the actual HV and LV values, rated frequency and vector group.
- Performance requirements
- Specify kVA, impedance, no-load/load-loss requirements and tap range.
- Project documentation
- Identify required outline, terminal, nameplate and test documentation for technical approval.
Installation & connection checklist
- Provide the substation arrangement and foundation constraints.
- State cable/busbar connection details and required clearances.
- Share transport route, unloading and lifting restrictions.
- For replacement, include the existing tap arrangement and terminal locations.
Drawings & configuration documents
Send your selected rating and installation requirements to request the matching dimensional drawing, connection details and technical schedule.
DOCUMENTS · DELIVERY · SUPPORT
Technical coordination & after-sales enquiries
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 S11 · 35 kV
- 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 the substation arrangement and foundation constraints.
- State cable/busbar connection details and required clearances.
- Share transport route, unloading and lifting restrictions.
- For replacement, include the existing tap arrangement and terminal locations.
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.
Related catalogue series
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Catalogue capacity: 30–1,600 kVA
View specifications ↗
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Catalogue capacity: 30–1,600 kVA
View specifications ↗
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20 kV oil-immersed transformer
S13 table HV options: 20 / 22 / 24 kV
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35 kV on-load tap-changing transformer
Voltage class: 35 kV
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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.