XWA Power & Cable Co., Ltd. is a professional power transformer manufacturer based in Xiangcheng, Henan Province, China. We design and manufacture oil-immersed power transformers and dry-type distribution transformers from 10kVA to 63MVA, covering voltage classes from 6kV to 110kV, to IEC 60076, GB/T 1094, and ANSI/IEEE standards.
All transformers are manufactured in our 33,000m² factory, tested in-house to full IEC compliance, and supplied factory-direct to power utilities, EPC contractors, industrial plant operators, and renewable energy developers in 60+ countries. ISO 9001 certified since 2007. State Grid qualified supplier.
35kV Transformer
Alloy Core Transformer
Alloy Core Transformer
3D Wound Transformer
Oil-immersed Transformer
3D Coil Transformer
IEC 60076: Power Transformer Technical Specification
XWA Power transformers are designed and manufactured in strict compliance with IEC 60076 (Power Transformers), IEC 60076-11 (Dry-Type Transformers), and GB/T 1094 national standards. The following table outlines the most commonly supplied models and their core technical parameters, suitable for power grid distribution, industrial, commercial, and renewable energy applications.
| Model | Type | Voltage Class | Capacity Range | Typical Applications |
|---|---|---|---|---|
| S-11M | Oil-immersed | 10kV/0.4kV | 30–2,500kVA | Power grid distribution · Rural electrification |
| S13-M | Oil-immersed | 10kV/0.4kV | 30–2,500kVA | Low-loss urban grid · Smart grid |
| SZ11 | Oil-immersed OLTC | 10kV–110kV | 1,000–63,000kVA | Substation · Industrial plant |
| SCB13 | Dry-type epoxy | 10kV/0.4kV | 30–20,000kVA | Commercial building · Hospital · Metro |
| SCBH15 | Amorphous dry-type | 10kV/0.4kV | 30–2,500kVA | Energy saving · Rural grid |
Application Scenarios — Where XWA Power Transformers Are Used
Power Grid & Utility Distribution
XWA oil-immersed and dry-type transformers are widely deployed in primary and secondary power distribution networks operated by national grid companies and regional utilities. Our transformers handle the step-down and step-up functions critical to stable grid operation.
Typical products: S11-M (10kV), S13-M (10kV), SZ11 (35kV/110kV OLTC)
Typical capacity: 100kVA – 63,000kVA
Standards: IEC 60076 · GB/T 1094
Industrial Plant & Factory Power Supply
Manufacturing facilities, petrochemical plants, steel mills, cement factories, and data centres require reliable, low-maintenance transformer solutions. XWA dry-type transformers (SCB series) are particularly suited for indoor installation where fire safety and low noise are priorities.
Typical products: SCB13, SCB15 (dry-type), SZ11 (oil, with OLTC)
Typical capacity: 500kVA – 20,000kVA
Standards: IEC 60076-11 · GB/T 10228
Solar, Wind & Renewable Energy Projects
XWA step-up transformers for solar PV and wind farms are engineered to handle high-frequency harmonics generated by inverters, DC offset conditions, and the demanding load cycles of utility-scale renewable energy plants.
Typical products: Dedicated PV step-up transformer, BESS transformer
Typical capacity: 500kVA – 10,000kVA per unit
Voltage: 0.27kV/0.315kV → 10kV/35kV
Standards: IEC 60076 · IEC 61936
Frequently Asked Questions of MV Power Cable
What types of power transformers does XWA Power manufacture?
XWA Power manufactures a comprehensive range of power transformers, including oil-immersed power transformers (S11, S13, SZ11 series), dry-type distribution transformers (SCB13, SCB15 series), amorphous alloy core transformers (SCBH15, S15 series), mining and explosion-proof transformers, solar PV step-up transformers, rectifier and furnace transformers, and pre-fabricated box-type substations (ZGS, YBW series).
Capacity ranges from 10kVA to 63,000kVA (63MVA), with primary voltage classes of 6kV, 10kV, 35kV, and 110kV. All transformers are manufactured to IEC 60076, IEC 60076-11, GB/T 1094, and ANSI/IEEE C57 standards.
What certifications and standards do XWA Power transformers comply with?
XWA Power transformers comply with the following international and national standards: IEC 60076 (Power Transformers — all parts), IEC 60076-11 (Dry-Type Transformers), GB/T 1094 (Chinese national standard equivalent to IEC 60076), GB/T 10228 (Dry-Type Transformers), ANSI/IEEE C57 (North American standard), and IEC 61936 (Power Installations).
The company holds ISO 9001 Quality Management certification (since 2007), ISO 14001 Environmental Management, CCC China Compulsory Certification, and is an approved qualified supplier of State Grid Corporation of China. All transformers undergo full factory acceptance testing (FAT) before shipment.
What is the difference between oil-immersed and dry-type transformers, and which should I choose?
Oil-immersed transformers use transformer oil as both coolant and insulation. They offer higher capacity, better overload capability, and lower cost per kVA, making them the preferred choice for outdoor substations, power grid applications, and large industrial installations.
Dry-type (cast resin) transformers use epoxy resin insulation and require no oil containment systems. They are safer for indoor installation in buildings, hospitals, data centres, and metro systems where fire risk must be minimised. For capacities above 10MVA or voltages above 35kV, oil-immersed is generally more economical. For indoor urban environments requiring low noise and fire safety, dry-type is recommended. XWA Power’s technical team can assist with transformer selection based on your specific project requirements.
Can XWA Power manufacture transformers to custom specifications?
Yes. XWA Power has strong custom transformer manufacturing capability. We can produce transformers to customer-specified capacity (kVA/MVA), voltage ratio, frequency (50Hz or 60Hz), cooling method (ONAN/ONAF/OFAF), tap changer type (NLTC or OLTC), winding material (copper or aluminium), enclosure protection class (IP20 to IP54), and paint colour.
We support custom designs to regional standards including IEC, ANSI/IEEE, BS, AS/NZS, and other local grid codes. Special applications including mining, solar PV, rectifier, furnace, and traction transformers are available. Lead time for custom transformers is typically 35–90 days after order confirmation and technical drawing approval.
How do I get a transformer quotation from XWA Power, and what is the lead time?
To obtain a quotation, please provide the following information: transformer type (oil-immersed or dry-type), capacity (kVA/MVA), voltage ratio (primary/secondary kV), frequency (50Hz or 60Hz), quantity, and destination country. Submit your requirements via our online inquiry form or email info@xwacable.com.
Our sales team will respond with a detailed technical and commercial quotation within 24 hours. Standard lead times: Oil-immersed transformers: 30–60 days. Dry-type transformers: 25–45 days. Custom/special specifications: 45–90 days. We accept payment by T/T (bank transfer) and L/C (letter of credit). Third-party inspection (SGS, BV, TÜV) is welcomed before shipment.