Skip to content
Fengguang Transformer
125 kVA 10 kV Oil-Immersed power Transformer — Fengguang Transformer 10kV Oil-Immersed Distribution Transformer

Standards

GB / IEC 60076

Testing

Routine report

Origin

China

10kV Distribution Transformers

125 kVA 10 kV Oil-Immersed power Transformer

125 kVA 10 kV 10kV Oil-Immersed Distribution Transformer

In the 10KV medium-capacity power distribution scenarios, the equipment's load capacity is often insufficient and it is prone to failure during long-term operation. It is very difficult to find oil-immersed equipment with a capacity of 125kVA that can balance stability and durability when purchasing. The 125kVA 10KV oil-immersed power transformer can be directly paired with Box Type Substation for deployment, working in coordination with High And Low Voltage Switchgear . It can stably carry large-capacity loads and is less likely to experience overheating or failure. It is suitable for various complex power distribution environments and effectively solves the core problems in procurement and usage.

Quick answer. 125 kVA 10 kV Oil-Immersed power Transformer is a 10kV Oil-Immersed Distribution Transformer rated 125 kVA at 10 kV. Typical applications include 10 kV utility distribution feeders, Industrial parks and factory substations, Commercial buildings and campuses. It is designed to GB 1094.1 and IEC 60076, with routine tests recorded against the approved datasheet.
Product type
10kV Oil-Immersed Distribution Transformer
Rated capacity
125 kVA
Voltage class
10 kV
Cooling
ONAN / ONAF
Tap range
Off-circuit or on-load, project-specific
Winding
Copper or aluminium (project-specific)

Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.

  • Routine test report with the unit
  • English GA drawing and O&M manual
  • Copper or aluminium winding options
  • 50 Hz / 60 Hz and harsh-site options
GB 1094.1· GB/T 6451· IEC 60076· ISO 9001 / 14001 / 45001· CE where applicable

Product overview

125kVA 10KV oil-immersed Power Transformer

In the 10KV medium-capacity power distribution scenarios, the equipment's load capacity is often insufficient and it is prone to failure during long-term operation. It is very difficult to find oil-immersed equipment with a capacity of 125kVA that can balance stability and durability when purchasing. The 125kVA 10KV oil-immersed power transformer can be directly paired with Box Type Substation for deployment, working in coordination with High And Low Voltage Switchgear . It can stably carry large-capacity loads and is less likely to experience overheating or failure. It is suitable for various complex power distribution environments and effectively solves the core problems in procurement and usage.

This transformer is mainly used in 10KV medium-large capacity power distribution scenarios, covering medium-sized factories, large parks, photovoltaic support systems, etc. It can be used in conjunction with transformers of the same specification that are oil-immersed, and can also be connected to dry-type transformers to provide additional compatibility. It is combined with an Electric Power Converter to optimize the efficiency of power transmission, and is coordinated with Combined Photovoltaic Substations to achieve efficient utilization of clean energy. Its core value lies in basing on stable large-capacity output, taking into account durability and compatibility, reducing the frequency of equipment downtime, and lowering the post-purchase operation and maintenance costs as well as replacement costs for the buyer.

Product Features 1.It has a large capacity and strong adaptability. With a capacity of 125kVA, it can stably handle the power distribution load of medium-sized scenarios. Compared to ordinary Oil Immersed Transformers, it has a more outstanding load capacity and is less likely to fail due to overload.

2. Excellent durability. The oil-immersed sealing structure can effectively prevent dust and moisture, making it suitable for outdoor and complex industrial environments. When used in conjunction with Box Type Substation and High And Low Voltage Switchgear, the operational stability is further enhanced.

Tips for Use 1.During installation, it is necessary to ensure that the equipment is placed flatly and is properly connected to the High And Low Voltage Switchgear lines. Avoiding poor contact is crucial to prevent any impact on the load output. 2. Daily maintenance is not complicated. Regular checks on the insulation oil level and the sealing condition of the equipment are required to prevent oil leakage. Basic maintenance can be completed without the need for professional operation.

Design features

What the design is built around

Low-loss magnetic core

Cold-rolled grain-oriented silicon steel and a stepped core reduce no-load loss and audible noise.

Sealed tank construction

Welded tank, quality-gasketed cover and pressure-tested seals reduce oil leakage risk in outdoor duty.

Thermal margin for hot climates

Cooling surfaces and oil volume are selected for high ambient temperature and cyclic loading.

System compatibility

MV terminals, cable boxes and LV bushings are matched to the switchgear and protection scheme.

Typical specification

Specifications to confirm on the datasheet

Product type 10kV Oil-Immersed Distribution Transformer
Rated capacity 125 kVA
Voltage class 10 kV
Cooling ONAN / ONAF
Tap range Off-circuit or on-load, project-specific
Winding Copper or aluminium (project-specific)
Standards GB 1094.1, GB/T 6451, IEC 60076
Testing Routine tests plus type and special tests on request

The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.

Typical applications

  • 10 kV utility distribution feeders
  • Industrial parks and factory substations
  • Commercial buildings and campuses
  • Distributed PV and wind projects
  • Rural electrification and grid upgrades

Confirm before ordering

  • Rated capacity, voltage ratio and tap range
  • Impedance, fault level and parallel operation
  • Ambient temperature, altitude and enclosure
  • Winding material, losses and efficiency class
  • Terminations, protection and monitoring
  • Tests, inspection, packing and shipping limits

Buyer questions

FAQ for 125 kVA 10 kV Oil-Immersed power Transformer

What is 125 kVA 10 kV Oil-Immersed power Transformer best used for?
This model is specified at 125 kVA and 10 kV. It is used where the site load, fault level and environmental conditions match the approved datasheet. Share the load profile, ambient temperature, altitude and grid code and the design can be checked against the application.
What is the typical lead time for 125 kVA 10 kV Oil-Immersed power Transformer?
Standard distribution units typically ship in 25-40 days after drawing approval. Large power transformers and integrated stations are scheduled by design review, core and winding production, tanking, testing and packing. The exact date is confirmed in the quotation.
Which standards and tests are supplied?
The transformer family is designed to GB 1094.1, GB/T 6451 and IEC 60076. Routine tests include winding resistance, ratio, impedance, no-load loss, load loss, insulation resistance and power-frequency withstand. Type and special tests are available on request.
Can the transformer be customised for 60 Hz or a hot climate?
Yes. Frequency, ambient temperature, altitude, enclosure, corrosion class and terminal arrangement are project inputs. The design is adjusted before production, and the approved datasheet becomes the inspection basis.
How do I choose between copper and aluminium windings?
Copper gives higher short-circuit strength and a more compact winding; aluminium can reduce first cost for lightly loaded units. The choice depends on fault level, load profile, loss evaluation and the buyer's specification. Both are available.

Related models

Other configurations in this family

All 10kV Distribution Transformer

Project inquiry

Tell us what the transformer has to do.

Load, voltage class, site conditions, standards and required documents are enough to start. We reply through the inquiry thread.

No phone, email or address is published on this site. Your details are used only to answer this inquiry.