• Coil Material: Copper/Aluminum
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer
Why CHBEB Dry Type Transformers
CHBEB is one of China's professional manufacturers and suppliers specializing in CE/ISO-certified dry-type transformers. We offer a wide range of standard sizes and configurations for diverse industrial and commercial applications. Using advanced insulation technology and strict quality control, we ensure exceptional reliability and safety even in challenging environments. The following are the core features of our dry-type transformers:
- High Safety Performance features a flame-retardant and self-extinguishing design with no risk of oil leakage, guaranteeing maximum safety.
- Excellent Environmental Protection provides a fully sealed structure offering outstanding moisture and dust resistance for reliable operation in humid, dusty, or corrosive conditions.
- Maintenance-Free Design provides a fully enclosed, oil-free structure offering long-term reliability without the need for regular inspections or cleaning, effectively reducing operational costs.
- Low Noise & Eco-Friendly Operation ensures quiet performance with minimal electromagnetic emissions, meeting green building standards.
- Flexible Customization Options support capacity ranges from 30kVA to 6000kVA and tailored designs for factories, power plants, and commercial facilities.
Download Catalogue
CHBEB Transformers catalogue 2025.pdfCast Resin Transformer Series
We supply indoor dry-type transformers to global distributors, wholesalers, and sourcing agents, with exports to the Americas, Africa, Central Asia, Southeast Asia, and more. Below are our standard model specifications.
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![6000 Kva Dry Type Transformer]()
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![5000 Kva Dry Type Transformer]()
5000 Kva Dry Type Transformer• Coil Material: Copper/Aluminumview more
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer -
![4000 Kva Dry Type Transformer]()
4000 Kva Dry Type Transformer• Coil Material: Copper/Aluminumview more
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer -
![3750 Kva Dry Type Transformer]()
3750 Kva Dry Type Transformer• Coil Material: Copper/Aluminumview more
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer -
![3000 Kva Dry Type Transformer]()
3000 Kva Dry Type Transformer• Coil Material: Copper/Aluminumview more
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer -
![2500 Kvadry Type Transformer]()
2500 Kvadry Type Transformer• Coil Material: Copper/Aluminumview more
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer -
![2000 Kva Dry Type Transformer]()
2000 Kva Dry Type Transformer• Coil Material: Copper/Aluminumview more
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer -
![1500 Kva Dry Type Transformer]()
1500 Kva Dry Type Transformer• Coil Material: Copper/Aluminumview more
• Primary Voltage: 10-35kv
• Working Efficiency: 50HZ/60HZ
• Cast resin dry type transformer
• Indoor dry type transformer
• Low loss transformer
Technical Specifications
Our low loss transformers meet CE, ISO, and IEC standards, ensuring high safety and reliability. We offer both standard specifications and customizable options to suit diverse industrial applications. Key technical parameters include:
| Item | Specification |
| Type | Cast Resin Dry Type Transformer |
| Rated Capacity | 30 kVA – 6000 kVA |
| Rated Voltage | 10 kV-35 kV |
| Connection Group | Dyn11 or Yyn0 (optional) |
| Frequency | 50 Hz or 60 Hz |
| Insulation Class | Class F or Class H (optional) |
| Cooling Type | AN (Air Natural) or AF (Air Forced) |
| Impedance Voltage | Approx. 6.5% (customizable) |
| Winding Material | Copper or Aluminum (optional) |
| Protection Degree | IP00 standard, optional IP23 or higher |
| Standards Compliance | IEC 60076-11 / GB 6450 |
| Noise Level | ≤ 65 dB |
| Temperature Rise | ≤ 115°C |
Need a Custom Transformer Solution? Contact Us
for Tailored Specifications
Whether you need customization from our existing product line, manufacturing based on your technical documents, or a complete custom design from concept to product, we've got you covered.
Dry Type Transformer Manufacturing Process
Core Lamination & Assembly
- High-quality silicon steel sheets are laminated to form the core, ensuring low iron loss and high efficiency.
- The assembled core is clamped and supported to enhance mechanical strength.
Coil Winding
- We precisely wind high-voltage and low-voltage coils using copper or aluminum wire.
- CNC winding equipment ensures that all coils are tight and uniform.
Vacuum Casting with Epoxy Resin
- The wound coil is placed in a mold, where it undergoes vacuum casting with epoxy resin.
- The resulting dense, bubble-free structure enhances insulation performance and provides reliable protection against moisture and dust.
Curing & Solidification
- The poured resin undergoes high-temperature baking followed by natural cooling, resulting in a solid, durable structure.
Assembly & Integration
- We assemble the cured coils and core into a complete transformer.
- Necessary terminals, brackets, and protective covers are then installed to complete the assembly.
Testing & Quality Inspection
- We conduct performance tests on the transformers, such as dielectric withstand, partial discharge, and temperature rise tests.
- These tests ensure our products meet IEC, CE, and ISO standards.
Our Core Technologies
Cast Resin Technology
We utilize advanced epoxy casting technology to deliver dry-type transformer insulation, resulting in a fully enclosed, maintenance-free design. This provides superior mechanical strength and excellent short-circuit resistance, ensuring reliable performance and long service life in demanding environments such as subways, tunnels, wind farms, and data centers.
Cooling Technology
Our low-loss transformers employ advanced dry-type transformer cooling through efficient Air Natural (AN) or Air Forced (AF) methods to ensure effective heat dissipation under varying load conditions. This design improves thermal stability and guarantees consistent performance even during high-demand operations.
Technical Support
CHBEB provides comprehensive technical support for dry-type transformers, ensuring reliable performance throughout the product lifecycle—from pre-sales consultation to after-sales service. Our support services include:
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Pre-Sales Technical Consultation
Expert guidance to select the optimal transformer solution.
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Customization Support
Flexible customization to meet your technical requirements and diverse operating conditions.
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Installation & Commissioning Support
Detailed manuals and remote assistance for accurate installation and minimal downtime.
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After-Sales Support
Remote troubleshooting and maintenance to ensure reliable long-term operation.
FAQs
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Q: What types of transformers do you offer?A: As a professional transformer manufacturer, we produce and supply a full range of transformers, including oil-filled transformers, dry-type transformers, pad-mounted transformers, prefabricated substations, and power transformers.
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Q: Which industries are your dry-type transformers suitable for?
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Q: Can you provide custom transformer designs?
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Q: Can you provide references or case studies of past transformer projects?
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Q: What is your Minimum Order Quantity (MOQ)?
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Q: How do you ensure product quality?
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Q: What is your typical lead time for delivery?
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Q: What is your warranty policy?
We are one of the most experienced dry type transformer manufacturers and suppliers in China since 1956, specialized in providing high quality products and service for global clients. We warmly welcome you to wholesale custom made dry type transformer from our factory.
Powering the World with Premium Transformer Solutions
As a leading Chinese transformer manufacturer with decades of expertise, CHBEB proudly serves clients across 17 countries and counting. Our global footprint expands continuously as we:
- Deliver customized power solutions for more than 10 international projects
- Support over 20 trusted distributors worldwide
- Manufacture reliable low-voltage transformers with 60+ years of technical excellence
Let's energize your next power project with Chinese precision and global reliability.
Get in Touch with CHBEB
Leave a message for more information about our products series, and request a quote or expert advice.