Description

A 1250kVA dry type transformer is a medium-capacity power transformer designed for indoor and safety-critical applications.
It uses air cooling and solid insulation instead of oil, making it suitable for commercial buildings, industrial facilities, substations, and renewable energy projects where fire safety and low maintenance are required.

As a manufacturer, we supply 1250kVA dry type transformers with stable thermal performance, reliable insulation systems, and compliance with IEC and international standards.

1250kVA Dry Type Transformer Overview

Our 1250KVA dry-type transformer features a fully enclosed design with IP54 protection rating, effectively preventing dust and moisture intrusion to ensure stable operation in harsh environments. Utilizing Class H insulation materials with a temperature resistance of 180°C, it significantly extends equipment service life.

The compact structure saves installation space, making it particularly suitable for confined electrical rooms. The surface is treated with environmentally friendly coating offering excellent corrosion resistance and aesthetic appeal. Operating at below 60 dB noise level, it far exceeds national standards, creating a quiet working environment. Our transformer is especially ideal for hospitals, schools, commercial centers and other applications demanding highest safety and reliability requirements.

Detailed Photos

This detailed cutaway diagram reveals the transformer’s internal precision structure:

• Phase A Winding: Uses 99.99% high-purity electrolytic copper conductors with vacuum pressure impregnation treatment, effectively reducing eddy current losses

• Phase Connection System: Features double-layer insulation design with inter-phase isolation exceeding 3000V, ensuring safe operation

• Epoxy Resin Encapsulation: Employing imported epoxy resin material with excellent thermal conductivity and mechanical strength, seismic resistance up to level 9

• Copper Coil System: Nomex paper insulation, Class F insulation rating, temperature rise controlled within 80K

• Cross-Flow Cooling System: Unique axial-radial composite ventilation design improves heat dissipation efficiency by 35%
  These detailed design features ensure stability and efficiency during full-load operation.

1250kVA Dry Type Transformer Technical Specifications

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Our 1250KVA dry-type transformer delivers exceptional performance parameters:

• Rated Capacity: 1250kVA with short-term overload capability up to 150%

• Voltage Combination: High voltage side 10kV(±2×2.5%), low voltage side 0.4kV, customizable per customer requirements

• Connection Group: Dyn11, effectively suppressing harmonic interference

• No-load Loss: ≤1420W, 20% lower than national standards, saving approximately $700 annually in electricity costs

• Load Loss: ≤9500W (at 120°C conditions)

• No-load Current: ≤0.85%, excellent magnetization characteristics
  All parameters are certified by National Transformer Quality Supervision and Inspection Center, ensuring data reliability.

Key Features and Advantages of 1250kVA Dry Type Transformers

We have established a comprehensive quality assurance system:

• QC Testing System: 13 quality inspection procedures including partial discharge test (≤5pC), lightning impulse test, sudden short-circuit test

• Two-Year Warranty: 24-month extended warranty with lifetime maintenance, 48-hour response time for quality issues

• Local Service: Service networks in 20 countries worldwide providing local technical support and parts supply
  Our transformers average over 200,000 hours of trouble-free operation with failure rate below 0.5%, ensuring your complete peace of mind.

Production Process and Quality Control

Our manufacturing process employs advanced technology and equipment:

• Winding Process: CNC numerical control winding machines with 0.1mm precision ensure winding consistency

• Vacuum Casting: Epoxy resin casting in ≤5Pa vacuum environment eliminates bubble formation

• Heat Treatment: Program-controlled temperature curing ovens with ±2°C temperature accuracy ensure stable insulation performance

• Assembly Testing: Fully automated assembly production line with 72-hour aging test for every transformer
  We strictly implement ISO9001 quality management system with quality tracking records for each production step ensuring full traceability.

Packaging, Transportation, and Installation

We provide professional packaging and shipping solutions:

• Shock-proof Packaging: Steel-wood structure base with internal damping materials ensures transportation safety

• Moisture Protection: Built-in humidity indicator cards and desiccants for real-time monitoring

• Handling Protection: Protective covers at critical points prevent damage during lifting

• Global Delivery: Partnership with world-renowned logistics companies providing door-to-door service (15 days to UK, 20 days to USA, 10 days to Philippines)
  We have successfully delivered products to 500+ global projects with 99.9% intact delivery rate.

1250KVA Dry Type Transformer Certifications

Our 1250kVA dry type transformers comply with international standards such as IEC 60076 and IEEE Std C57 series, ensuring safe, reliable, and high-performance operation in commercial and industrial applications.

Global Cooperation

This photo gallery showcases our dedicated team and global partnerships behind every 1250KVA dry-type transformer. See our engineering experts with 15+ years of experience collaborating with international clients on factory acceptance tests and technical solutions.

These genuine moments demonstrate our multilingual support capabilities and commitment to building lasting relationships – not just delivering products. When you choose our transformer, you gain both superior technology and a reliable partner invested in your long-term success.

FAQ

Q: What is the typical voltage rating for a 1250kVA dry type transformer?
A: Manufacturers commonly supply 1250kVA dry type transformers with primary voltages ranging from 6kV to 35kV, depending on project requirements.

Q: Is a 1250kVA dry type transformer suitable for indoor installation?
A: Yes. Engineers design dry type transformers specifically for indoor environments where fire safety and environmental protection are critical.

Q: How does a 1250kVA dry type transformer differ from an oil immersed transformer?
A: Dry type transformers use air cooling and solid insulation, eliminating oil leakage risks and reducing maintenance needs.

Q: Can a 1250kVA dry type transformer be customized?
A: Manufacturers customize voltage levels, insulation class, and enclosure designs to match specific project and utility requirements.

Need a 1250kVA dry type transformer for your project?

Share your voltage level, installation environment, and standards requirement. Our engineering team will provide a suitable configuration and technical proposal.