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HENTG POWER Step-up Solar PV Dry-Type Transformers 20KV 11KV 3.15MVA 2.5MVA 5MVA for Distributed and Commercial & Industrial Solar Power

Product Summary

HENTG POWER solar PV dry-type transformers: oil-free cast resin design for fire safety, harmonic tolerance, low losses and noise. Customizable voltage, IP rating, and impedance. KEMA/CTQC tested, 20,000-unit annual capacity, 30+ export countries.

Key Attributes
Product Custom Attributes
Highlight

Step-up Solar PV Dry-Type Transformers

,

20KV 11KV Solar PV Transformers

,

3.15MVA 2.5MVA 5MVA Solar Transformers

Voltage Rating:
20 KV, 11 KV
Power Capacity:
3.15 MVA, 2.5 MVA, 5 MVA
Insulation Type:
Cast Resin (dry-type)
Low Voltage:
0.69 KV, 1.14 KV
Medium Voltage:
10 KV, 35 KV
Enclosure Protection:
IP-rated (customizable)
Product Description
HENTG POWER Solar PV Dry-Type Transformers — Reliable Solutions for Distributed and Commercial & Industrial Solar Power
Product Overview

Developed for solar photovoltaic (PV) power systems, HENTG POWER dry-type cast resin transformers are suitable for rooftop solar installations, commercial and industrial (C&I) PV projects, PV grid-connected step-up applications, and integrated solar-plus-energy-storage systems.

Designed to address fluctuating power output throughout the day, inverter-generated harmonics, three-phase load imbalance, and demanding outdoor or semi-outdoor installation environments, our transformers offer reliable performance for modern solar power applications.

Customized solutions are available to meet project-specific requirements for voltage ratings, power capacity, impedance, temperature rise, enclosure protection ratings (IP), and grid interconnection standards. Our dry-type transformers provide a safe, energy-efficient, and low-maintenance power conversion solution for solar PV systems.

Key Features & Advantages
1. Oil-Free Design for Enhanced Fire Safety

Cast resin insulation eliminates the need for insulating oil, reducing the risks of oil leakage and oil-related fires. Ideal for rooftop solar installations, industrial facilities, commercial buildings, and areas with regular personnel activity.

2. Harmonic-Tolerant Design and Three-Phase Load Imbalance Considerations

Winding configurations and connection designs can be optimized to accommodate inverter-generated harmonics and three-phase load imbalance, helping improve power quality and operational stability in grid-connected PV systems.

3. Low Energy Losses and Low Operating Noise

Optimized core and winding structures help reduce no-load losses, load losses, and operating noise, improving energy efficiency and helping lower long-term operating costs for solar power installations.

4. Oil-Free Maintenance for Lower Operating Costs

No insulating oil sampling or oil treatment is required, helping simplify routine inspections and reduce maintenance requirements, particularly for distributed rooftop and multi-site commercial solar projects.

5. Adaptable to Challenging Environmental Conditions

Customized solutions are available with enhanced moisture resistance, dust protection, corrosion protection, and higher IP-rated enclosures to suit rooftop installations exposed to high temperatures, dusty industrial environments, and humid or coastal conditions.

6. Flexible Grid Integration and Customized Electrical Parameters

Designed to meet applicable IEC 60076 and IEEE requirements, our transformers can be customized for project-specific grid connection parameters, including typical PV inverter-side voltage levels such as 0.69 kV and 1.14 kV, as well as medium-voltage levels such as 10 kV and 35 kV, subject to project requirements.

7. Manufacturing Capability and Quality Assurance

HENTG POWER provides manufacturing and quality assurance support for solar PV transformer projects, backed by:

  • 100,000 m² manufacturing facility

  • Annual production capacity of 20,000 units

  • 100% factory quality inspection

  • Comprehensive testing capabilities

  • Type-test reports from KEMA, CESI, and CTQC

  • Export experience in more than 30 countries

Typical Applications
  • Rooftop distributed solar PV systems

  • Commercial and industrial (C&I) solar power projects

  • Grid-connected PV step-up transformer applications

  • Integrated solar PV and battery energy storage systems (BESS)

  • Coastal solar power installations

  • High-humidity and high-dust solar PV projects

HENTG POWER — Reliable Transformer Solutions for Solar PV and Renewable Energy Systems.

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