ZTELEC Yuguang Power Transformer Factory

01-08 2026 | By:

As global power grids expand and renewable energy projects accelerate, high-reliability, high-voltage power transformers play a critical role in transmission and distribution systems.
ZTELEC · Yuguang Power Transformer Factory is a specialized manufacturer focused on the design and production of 35kV, 66kV, 110kV, and 220kV power transformers, offering a full capacity range from 200kVA up to 200MVA for international markets.

Manufacturer Profile & Production Capability

Yuguang Power Transformer Factory, operating under the ZTELEC brand, is a dedicated manufacturing base for medium- and high-voltage power transformers. The factory is equipped with:

• Independent transformer design and engineering teams

• Complete in-house production lines for power transformers

• Strong customization capability for overseas grid requirements

• Long-term export experience for utility and EPC projects

The factory follows an export-oriented manufacturing model, supplying power transformers to Africa, the Middle East, Southeast Asia, Central Asia, and South America, with proven adaptability to diverse grid standards and operating conditions.

Voltage Classes & Capacity Range

Voltage Levels

• 35kV distribution and industrial transformers

• 66kV regional grid and renewable energy substations

• 110kV transmission and primary substations

• 220kV high-voltage transmission and main transformers

Rated Power Range

• Small to medium capacity:
  200kVA / 500kVA / 1000kVA / 1600kVA / 2000kVA

• Medium to large capacity:
  3000kVA / 5000kVA / 8000kVA / 10MVA / 20MVA

• Large power transformers:
  30MVA / 40MVA / 60MVA

• Custom designs up to 200MVA available

Power Transformer Product Categories

Yuguang Power Transformer Factory supplies a comprehensive range of power transformer solutions, including:

Oil-Immersed Power Transformers

• ONAN / ONAF / OFAF cooling systems

• Designed for transmission and distribution substations

Step-Up Transformers for Renewable Energy

• Solar power plant step-up transformers

• Wind power and energy storage applications

Industrial Power Transformers

• Mining, metallurgy, cement, petrochemical industries

• Designed for high load and continuous operation

Customized Power Transformers

• Special voltage ratios

• High-altitude, high-temperature, or high-humidity environments

• Customized impedance and loss optimization

Application Scenarios

ZTELEC · Yuguang power transformers are widely applied in:

• National and regional transmission & distribution networks

• Solar, wind, and energy storage substations

• Urban and industrial substations

• Heavy industries and large-scale infrastructure projects

• EPC turnkey power projects

Global Project Experience

With years of export experience, Yuguang Power Transformer Factory has supplied transformers for:

• 110kV and 220kV substations in Africa

• Renewable energy step-up substations in the Middle East

• 35kV–66kV industrial distribution systems in Southeast Asia

• High-altitude grid projects in Central Asia

The transformers demonstrate stable performance under long-term high-load operation and challenging environmental conditions, earning strong trust from utilities and EPC contractors.

Standards, Certifications & Compliance

All power transformers are designed and manufactured in strict accordance with international standards:

Applicable Standards

• IEC 60076 series

• IEEE C57 standards

• GB / DL national and industry standards

Certification & Inspection Support

• CE certification

• ISO 9001 & ISO 14001 management systems

• Third-party inspection by SGS, BV, or TUV upon request

Testing & Quality Assurance

Each transformer undergoes comprehensive factory testing before shipment, including:

• Winding resistance measurement

• Voltage ratio and phase displacement tests

• No-load loss and load loss tests

• Power-frequency and induced voltage withstand tests

• Partial discharge testing (when required)

• Thermal performance verification and calculation

These procedures ensure every unit meets design specifications and long-term operational safety requirements.

ZTELEC · Yuguang A Reliable Medium & High-Voltage Transformer Manufacturer

From 35kV distribution transformers to 220kV, 200MVA large power transformers,
ZTELEC · Yuguang Power Transformer Factory delivers reliable, cost-effective, and technically proven transformer solutions for global markets.

For international buyers seeking a trusted manufacturer with strong engineering capability, flexible customization, and stable delivery, Yuguang is a long-term partner for power infrastructure development.

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