In depth analysis of epoxy resin dry-type transformers: manufacturing process, performance indicators, and international market applications

Why are epoxy resin dry-type transformers more popular in overseas markets?

In international markets such as Europe, the Middle East, and Southeast Asia, epoxy resin cast dry-type transformers have become the preferred equipment for medium and low voltage distribution projects. This is not only due to safety, but also to their stability, life cycle cost, and standardization level.

1.Manufacturing process of epoxy resin dry-type transformers

1.1 Vacuum Casting Process

Core process:

1.Winding pre-processing
2.vacuum degassing
3.Epoxy resin casting
4.High temperature curing molding

Advantages:

• bubble-free
• Uniform insulation
• Strong ability to resist partial discharge

2.Analysis of Key Technical Indicators

Parameter	Typical Value
Partial Discharge	≤10 pC
Noise Level	≤55 dB
Insulation Class	F / H
Short-Circuit Strength	High

3.Advantages of epoxy resin dry-type transformers

3.1 Excellent insulation performance

• Moisture proof, salt spray proof, and dust proof
• Suitable for coastal areas, deserts, and industrial pollution zones

3.2 Long service life

• Design lifespan ≥ 25 years
• Low thermal aging rate

4.International certification and standard requirements

Common certifications for export projects:

• IEC 60076-11
• CE
• ISO 9001 / 14001
• KEMA/DEKRA (partial projects)

5.Overseas engineering application case direction (can be used on the official website)

• Data center UPS power distribution system
• Photovoltaic booster station
• Subway traction substation
• Commercial real estate distribution room

6.The role of dry-type transformers in new energy systems

6.1 Photovoltaic System

• Grid connected voltage boost
• Low noise operation

6.2 Energy Storage System

• high security level
• High fire prevention requirements

7.How to evaluate a dry-type transformers supplier?

Key focus:

• Raw material sources (silicon steel, resin)
• Short circuit test report
• International project experience
• customization capability

8.Common technical questions from the purchaser (FAQ)

Q1: Are dry-type transformers suitable for high-temperature areas?

A: Choose H-grade insulation and configure an air cooling system.

Q2: Can it be installed outdoors?

A: Can be equipped with a protective casing (IP54) for semi outdoor installation.

Epoxy resin dry-type transformers are not only equipment, but also the core guarantee for the safety, environmental protection, and reliability of modern distribution systems. With the continuous improvement of global project standards, its market space will continue to expand.

Luoyang Datang Energy Technology Co., Ltd. is a high-tech enterprise integrating R&D, manufacturing and supply of power equipment such as transformers, new energy components, distribution cabinets and inverters. With technological innovation as the core, we focus on creating high-reliability and high-performance power solutions to serve global customers. With a strict quality control system and international standard certification, we continue to output excellent products and enable customers to build safe and stable power systems.