Vietnamese Case | Haihong Electric’s 3D Wound Core Energy-Saving Technology Supports High-Quality Development of the " the Belt and Road" Initiative

As the world’s largest provider of smart device exterior structures and module solutions, Biel Crystal has established a large-scale new factory in Hai Duong Province, Vietnam (hereinafter referred to as Biel Crystal Hai Duong Plant), marking a significant step in its global strategy. HAIHONG Electric as Biel Crystal’s partner for factory power distribution systems, has consistently supplied highly reliable 3D Wound Core Transformers for its projects since 2017.For the Biel Crystal Hai Duong Plant, four big-capacity Open Ventilated 3D Wound Core Dry-type Transformers (three 16,000kVA/22kV units and one 2,500kVA/22kV unit) were deployed to build a green, energy-efficient, and highly reliable power distribution system, ensuring a stable energy supply for large-scale production. This initiative not only reflects Biel Crystal’s commitment to production safety and environmental sustainability but also highlights the leading position of China’s energy-saving transformer technology on the global stage, injecting new momentum into the high-quality development of the " the Belt and Road" initiative.

Safety & Reliability: Ensuring Uninterrupted Large-Scale Production

The Biel Crystal Hai Duong Plant is a modern, large-scale manufacturing base with stringent requirements for power supply stability in its high-end optical component production. To address challenges such as frequent voltage fluctuations in Vietnam’s power grid and high-temperature, high-humidity operating conditions, HAIHONG Electric’s Open Ventilated 3D Wound Core Dry-type Transformers deliver outstanding performance:

·         Efficient heat dissipation & strong overload capacity, adapting to the plant’s high-load, continuous operation.

·         Superior short-circuit withstanding ability, ensuring stable power supply for precision optical manufacturing despite Vietnam’s complex grid conditions.

·         Excellent moisture & pollution resistance, with proven performance in harsh environments (e.g., prolonged submersion and dust exposure), maintaining reliable insulation even in Vietnam’s tropical climate.

Case Study: Flood Resistance

A residential area transformer remained operational after floodwaters receded, requiring only minor maintenance.

Case Study: Dust Resistance
Testing under extreme dust conditions confirmed long-term durability.

Energy Efficiency: Powering a "Green Distribution Engine"

Biel Crystal adheres to green manufacturing and sustainable development principles, aligning with HAIHONG Electric’s philosophy and forming the foundation of their long-term partnership.

Compared to traditional laminated core transformers (at equivalent cost), 3D Wound Core Technology achieves:
✔ 30% lower no-load loss
✔ 5% lower load loss
✔ 70% reduction in no-load current
✔ 10% annual operational cost savings

This significantly reduces power distribution losses, enabling Biel Crystal Hai Duong Plant to cut long-term electricity expenses.

Given Vietnam’s coal-dominated power grid, adopting Open Ventilated 3D Wound Core Dry-type Transformers helps reduce CO₂ and SO₂ emissions, supporting global green development and setting a new benchmark for sustainable industrialization in Vietnam.

Driving High-Quality " the Belt and Road Initiative" Collaboration

As a flagship Chinese energy-saving transformer technology, the 3D Wound Core system—with its reliability, efficiency, and eco-friendly performance—has become a core engine for Chinese companies expanding overseas and promoting green power distribution in Belt and Road countries.

For Biel Crystal Hai Duong Plant, these transformers provide a safe, energy-saving, and eco-conscious power solution, enhancing local industrial reliability while reducing energy consumption and emissions. This successful technology export demonstrates China’s innovation in energy conservation and contributes Chinese expertise to global sustainability.

Global Service, Local Support

HAIHONG Electric’s service team traveled to Hai Duong Province, guiding local Vietnamese technicians to complete installation seamlessly. With rapid response and professional support, HAIHONG ensures smooth overseas operations for partners like Biel Crystal, proving that distance is no barrier to reliable technology and service.

The Biel Crystal Hai Duong Plant project is not just a model of large-scale industrial power distribution collaboration but also a testament to deepening Sino-Vietnamese cooperation in green manufacturing. It underscores China’s leadership in energy-saving transformer technology and empowers Chinese enterprises investing abroad. Moving forward, HAIHONG Electric will continue leveraging innovation to advance global sustainable development.