Technical Specifications
| Parameter | Value |
|---|---|
| Model | SCB14-2500/10 |
| Product Code | 1ZX.710.1522A |
| Rated Capacity | 2500 kVA |
| Phases | 3-Phase |
| Rated Frequency | 50 Hz |
| Connection Symbol | Dyn11 |
| Insulation Level | LI75 AC35 / LI AC3 |
| Insulation Class | Class H |
| Permissible Temperature Rise | 125 K |
| Cooling Mode | AN / AF |
| Service Conditions | Indoor |
| Short-Circuit Impedance | 6.05% |
| Protection Level | IP20 |
| Total Weight | 4,910 kg |
| Serial Number | B2612500 |
| Manufacturing Date | June 2026 |
| Manufacturer | Sichuan Zhongxin General Electric Energy Co., Ltd. |
Voltage & Current Ratings
| Capacity (kVA) | HV Voltage (V) | HV Current (A) | Connecting Terminal | LV Voltage (V) | LV Current (A) |
|---|---|---|---|---|---|
| 2500 | 10,500 | — | 2–3 | 400 | 3,608.4 |
| 2500 | 10,250 | — | 3–4 | 400 | 3,608.4 |
| 2500 | 10,000 | 144.3 | 4–5 | 400 | 3,608.4 |
| 2500 | 9,750 | — | 5–6 | 400 | 3,608.4 |
| 2500 | 9,000 | — | 6–7 | 400 | 3,608.4 |
Manufacturing Process — From Winding to Dispatch
The quality of a cast resin dry-type transformer is determined during manufacturing. Every 2500 kVA unit shown here was produced at Zhongxin General’s Sichuan facility, and all images on this page are authentic production-line photographs of the actual 2500 kVA product — not substitute images of other capacity units used as stand-ins.
HV/LV Foil Winding
Coil winding in progress for the 2500 kVA unit. Precision at this stage directly determines the electrical performance and short-circuit withstand capability of the finished transformer.
The low-voltage winding adopts a foil winding structure. High-quality copper foil is wound using an automatic foil winding machine. LV output copper busbars are connected to the foil winding using argon-arc welding with full shielding gas protection, ensuring minimal contact resistance — critical for reliable delivery of the 3,608.4 A rated LV current. DMD epoxy resin pre-impregnated cloth is used between winding layers for interlayer insulation.
Vacuum Epoxy Casting
HV and LV windings of the 2500 kVA unit being prepared for loading into the vacuum casting machine for epoxy resin encapsulation. Vacuum casting eliminates partial discharge and ensures uniform dielectric strength across the entire winding.
The high-voltage winding is vacuum-cast with filled epoxy resin — a process that greatly reduces partial discharge and improves electrical strength. Glass fiber mesh plates reinforce the inner and outer walls of the HV winding, providing exceptional mechanical strength and short-circuit withstand capability. Under normal service conditions, the coils do not crack.
Curing and Demoulding
A technician prepares the 2500 kVA windings for the high-temperature curing cycle. Controlled oven curing ensures integral forming of the epoxy encapsulation.
HV and LV windings of the 2500 kVA transformer following completion of the curing cycle and demoulding — clean, void-free resin encapsulation confirms successful processing.
After the curing cycle is complete, the demoulded coil surface shows the void-free resin encapsulation that gives SCB-series transformers their flame-retardant, fire-proof, explosion-proof, and maintenance-free characteristics.
Core Steel Cutting and Core Assembly
A technician operates precision cutting equipment to produce silicon steel sheets to specification. Zhongxin General holds complete production tooling across the full dry-type transformer capacity range.
Silicon steel sheets cut to the precise dimensions required for the 2500 kVA transformer iron core. High-permeability cold-rolled grain-oriented silicon steel reduces no-load loss and noise.
The structural framework and iron core assembly of the 2500 kVA unit taking shape. At this capacity, precise clamping ensures the short-circuit withstand capability required for reliable operation on the 10 kV distribution network.
The iron core uses imported high-quality cold-rolled grain-oriented silicon steel with a five-stage full-oblique joint structure, bound with F-class non-woven tape and surface-coated with epoxy resin. This design significantly reduces no-load loss, no-load current, and core noise.
Key Features — 2500 kVA Cast Resin Dry-Type Transformer
Superior insulation performance. Vacuum-cast HV windings with glass fiber reinforcement deliver outstanding dielectric strength. The insulation level of LI75 AC35 / LI AC3 and Class H (125 K temperature rise) qualification ensure reliable continuous operation in demanding indoor environments.
Low no-load loss — exceeding EU energy efficiency requirements. Our standard 2500 kVA units meet GB 20052-2024 Grade 1 and Grade 2, which exceed the requirements of EU Commission Regulation No. 548/2014 and its 2019/1783 amendment (Tier 1 and Tier 2). A first-tier energy efficiency product can also be produced per customer specification.
Exceptional short-circuit withstand capability. The five-stage full-oblique core joint structure and fiberglass-reinforced epoxy winding encapsulation provide outstanding resistance to sudden short-circuit currents and grid transients — a critical requirement at 2500 kVA on medium-voltage distribution networks.
Intelligent temperature monitoring and AN/AF cooling. PT100 sensors embedded in the LV coil feed into an intelligent temperature controller, providing three-phase winding temperature scanning, over-temperature alarm and trip outputs, and automatic fan start/stop. Under forced-air (AF) cooling, the 2500 kVA unit can sustain rated load operation under high ambient conditions.
HV terminal — precise termination at 10 kV.
High-voltage terminal detail on the completed 2500 kVA transformer, showing the 10 kV HV insulation and connection quality. HV rated current is 144.3 A at the 10,000 V tap.
LV terminal — rated at 3,608.4 A.
Low-voltage terminal and busbar detail on the 2500 kVA unit. Full-load current at 400 V is 3,608.4 A — argon-arc welded copper connections ensure minimal resistance at this demanding current level.
Intelligent temperature controller — standard equipment.
Temperature control system on the 2500 kVA transformer: PT100 sensors embedded in the LV winding, intelligent controller with three-phase scanning, over-temperature alarm, automatic fan control. Optional RS485/Modbus communication interface available.
Why Zhongxin General for 2500 kVA Dry-Type Transformers
At 2500 kVA, buyers evaluating Chinese suppliers frequently encounter a significant and easily overlooked problem: many suppliers do not hold production tooling at this capacity and instead photograph larger units — 3150 kVA or above — then substitute them as representative images for 2500 kVA listings. The physical difference between a 2500 kVA and a 3150 kVA unit is substantial, and the electrical parameters, winding design, and core dimensions are not interchangeable.
Every image on this page is an authentic production photograph of the actual SCB14-2500/10 unit — showing the nameplate, the foil winding process, the vacuum casting, the core assembly, the factory acceptance test, and the HV/LV/temperature controller details specific to this capacity. This is verifiable and is a material distinction from suppliers who use stock images or capacity-substitute photography.
Zhongxin General’s specific advantages for 2500 kVA cast resin dry-type transformers:
Complete production tooling at every standard capacity. We hold dedicated molds and tooling for every standard capacity from 30 kVA to 8000 kVA. For 2500 kVA, this means the winding machine setup, vacuum casting molds, core clamping fixtures, and test bay configurations are all capacity-matched — not adapted from a different size. This enables fast manufacturing cycle times and consistent quality across repeat orders.
Authentic product photography at the correct capacity. All images in this product page — including winding, casting, curing, core assembly, testing, and terminal details — are genuine 2500 kVA production photographs. Other suppliers commonly use images from 3150 kVA or larger units as placeholder content for 2500 kVA listings. The difference in physical size, core geometry, and busbar dimensions is readily apparent to experienced procurement engineers.
EU export compliance. For European markets, Zhongxin General supplies CE Declaration of Conformity documenting compliance with the Low Voltage Directive 2014/35/EU, EU Commission Regulation No. 548/2014, and Commission Regulation (EU) 2019/1783. High-temperature phase sequence markings applied by laser-cut stencil and temperature-rated paint replace sharp metal identification plates as required under EU equipment safety requirements. Third-party CE certification (TÜV or equivalent) is available on request.
Aluminium winding option. For projects where copper pricing or import tariffs make aluminium winding the preferred specification, Zhongxin General manufactures 2500 kVA dry-type transformers with aluminium coil windings to the same structural and testing standards as the copper-wound version.
Full routine testing before dispatch — test report as standard. Winding resistance measurement, voltage ratio and vector group verification, no-load loss and current, load loss and short-circuit impedance, induced overvoltage withstand, and separate-source AC withstand tests are conducted on every unit. Partial discharge measurement is included as standard for dry-type transformers. Factory Acceptance Test (FAT) with client witness is supported.
Completed dry-type transformers loaded and secured for dispatch from Zhongxin General’s Sichuan factory. Zhongxin General holds complete production tooling at every standard capacity, enabling fast and reliable delivery.
Applicable Standards & Compliance
All 2500 kVA dry-type transformers manufactured by Zhongxin General are produced and tested in accordance with GB/T 10228-2023, GB 1094.1.2-2013, GB 1094.3-2017, GB 20052-2024, and IEC 60076-11.
Energy efficiency grades available: GB 20052-2024 Grade 1, Grade 2, and Grade 3. The Grade 1 product meets and exceeds the requirements of EU Commission Regulation No. 548/2014 Tier 1 and Commission Regulation (EU) 2019/1783 Tier 2.
Routine tests (every unit): winding resistance · voltage ratio and vector group · no-load loss and current · load loss and short-circuit impedance · induced overvoltage withstand · separate-source AC withstand · partial discharge measurement.
Type tests (representative units; reports available on request): temperature rise · lightning impulse.
Special tests (available on request): sound level · short-circuit withstand.
Available Options & Configurations
Winding material: copper (standard) or aluminium · Voltage class: 6 kV, 10 kV, 35 kV, HV customizable · Low voltage: 380 V, 400 V, 415 V, 433 V, or other values · Frequency: 50 Hz (standard) or 60 Hz · Energy efficiency: GB 20052-2024 Grade 1, 2, or 3 · Tap changer: ±2×2.5% off-circuit (standard) or OLTC · Protection degree: IP00 / IP20 / IP30 with metalwork enclosure · Temperature monitoring: standard intelligent controller; RS485/Modbus optional · Cooling: ANAN (natural) or ANAF (forced-air fan) · High-altitude versions for installations above 1000 m a.s.l.
Inquire About the 2500 kVA Dry-Type Transformer
Need a quotation, technical datasheet, or Factory Acceptance Test arrangement for the SCB14-2500/10? Whether you are sourcing for a single installation, a batch project, or an international export requiring IEC / EU compliance documentation, Zhongxin General’s engineering team can provide specifications, pricing, and delivery timelines to your requirements.
Tell us your grid voltage, required LV output, frequency, efficiency grade, winding material preference, and any special environmental or installation conditions.
[ Contact Us for Price & Datasheet ]
About Zhongxin General — Dry-Type Transformer Manufacturer & Factory
Zhongxin General (Sichuan Zhongxin General Electric Energy Co., Ltd.) is a China-based manufacturer and factory specialising in oil-immersed power transformers and dry-type power transformers, HV/MV/LV switchgear, prefabricated substations, energy storage systems, and EV charging infrastructure.
Headquartered in Xinjin District, Chengdu, Sichuan Province, the company holds National “Little Giant” Enterprise status — China’s highest SME innovation designation — alongside National High-Tech Enterprise certification.
Our dry-type transformer portfolio covers 30 kVA to 8000 kVA, configurable to 6 kV, 10 kV, and 35 kV voltage classes, in copper or aluminium winding, to GB, IEC 60076-11, and EU standards. The 2500 kVA cast resin dry-type transformer described on this page sits in the upper range of our most active production segment, with established production tooling, mature quality protocols, and available capacity for both single units and volume orders.
Every transformer we manufacture undergoes full routine testing before dispatch. Test reports are issued as standard documentation with every order.
Browse all case studies and company news to evaluate Zhongxin General as a supplier — from large-scale industrial substations and European export projects to hospital power infrastructure and oilfield applications.
