12.5MVA Power Transformer | SZ11-12500/110 | 115kV / 10.5kV | Built in 2019

This is an on-load tap-changing power transformer, model SZ11-12500/110, manufactured by Jiangsu Huapeng Transformer Co., Ltd. in April 2019. The rated capacity is 12500/12500/3750 kVA, with rated voltage levels of 115kV / 10.5kV / 6.3kV. It is suitable for substations, power system applications, and industrial power distribution projects.
The unit is equipped with an on-load tap changer (OLTC), allowing voltage adjustment within a specified range and making it suitable for projects requiring stable power supply and flexible system matching.

Additional information

Manufacturer

Jiangsu Huapeng Transformer Co., Ltd.

Model

SZ11-12500/110

Rated Capacity

12500 / 12500 / 3750 kVA

Voltage Ratio

(115 ± 8 × 1.25%) kV / 10.5kV / 6.3kV

Frequency / Phase

50Hz / 3-Phase

Manufacturing Date

April 2019

Scope of Supply

The final supply scope can be confirmed according to the actual unit condition and project requirements. It generally includes:

  • Transformer main body
  • HV, LV, and tertiary winding related outlet sections
  • On-load tap changer (OLTC) system
  • Oil tank, cooling structure, and main external components
  • Bushings, nameplate, and existing external accessories
  • Existing standard instruments and protection accessories, subject to actual configuration
  • Existing technical documents and nameplate data, subject to actual availability

Note: The final supply scope and configuration shall be subject to the mutually confirmed technical documents and contract.

Inspection, Testing & Technical Review

To help buyers better evaluate the actual condition of the unit, we can provide inspection, testing, and technical review support according to the equipment condition, project requirements, and buyer’s technical standards, including:

  • General inspection of the transformer body, bushings, oil tank, cooling system, nameplate, and main accessories
  • Verification of rated capacity, voltage level, frequency, vector group, and main technical data
  • Routine tests such as insulation resistance, turns ratio, DC resistance, and oil analysis can be arranged upon request
  • Condition inspection and functional checking of the OLTC and related components
  • Technical clarification of service history, storage condition, and dismantling background based on available information
  • Pre-shipment inspection, video witnessing, or technical review by the buyer or third party can be supported
  • If the buyer requires a higher delivery standard, a targeted refurbishment and testing plan can also be arranged based on the actual condition

Project Support Services

We understand that buyers of used power transformers care not only about price, but also about whether the unit can be safely, reliably, and smoothly put into service. Therefore, we can provide the following support services according to project needs:

  • Assistance with preliminary model selection and technical matching based on voltage level, capacity requirement, and application scenario
  • Supply of key technical data, dimensional references, and available documents for project evaluation
  • Export packing, lifting preparation, loading, and transportation protection support to reduce logistics risks
  • Technical communication support for installation preparation, accessory reassembly, and pre-commissioning attention points after arrival
  • Different levels of refurbishment service can be arranged upon request, including cleaning, component servicing, oil treatment, sealing replacement, anti-corrosion painting, and necessary tests
  • For projects with higher delivery requirements, a deeper refurbishment and delivery plan can be developed based on budget and technical conditions
  • Long-term cooperation support can be provided for operation, maintenance, spare parts supply, and further technical communication

Note: The final scope of inspection, testing, and refurbishment can be confirmed according to the actual unit condition, project requirements, and buyer’s budget.

Frequently Asked Questions

What kind of projects is this transformer suitable for?
This unit is suitable for substations, power transmission and distribution projects, and industrial power supply applications requiring a 115kV / 10.5kV / 6.3kV configuration. Final suitability can be confirmed based on the buyer’s system parameters.
Yes. According to the nameplate, this unit is an on-load tap-changing power transformer, designed to adjust voltage under operating conditions within the specified tap range.
Yes. We can arrange inspection, testing, technical review, and different levels of refurbishment according to the buyer’s technical requirements, project standards, and budget.

Request a Quote & Technical Matching

Please provide your contact details and project requirements below. Our team will review your request and recommend suitable equipment solutions based on your application, technical needs, and delivery destination.
Site inspection, pre-shipment checking, and project discussion can be arranged for serious buyers.

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