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Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.

Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. was recommended as the first batch of urban and rural power grid construction and transformation of product promotion enterprise, specializing in the production of power transformers, switchgear, wire and cable and other electrical products. It is the national projects that benefit the promotion efficient transformer business.Founded in 1958.
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HIGH QUALITY
Trust Seal, Credit Check, RoSH and Supplier Capability Assessment. company has strictly quality control system and professional test lab.
DEVELOPMENT
Internal professional design team and advanced machinery workshop. We can cooperate to develop the products you need.
MANUFACTURING
Advanced automatic machines, strictly process control system. We can manufacture all the Electrical terminals beyond your demand.
100% SERVICE
Bulk and customized small packaging, FOB, CIF, DDU and DDP. Let us help you find the best solution for all your concerns.
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SOLUTION
SOLUTION
  • Guanggao Electric: PV Transformers Delivered to the Philippines – Powering Energy Transition
    01-22 2026
    On January 20, 2026, two custom-engineered oil-immersed high-efficiency and energy-saving photovoltaic transformers for the Philippine market, rated at 50MVA/69kV and 32.5MVA/69kV respectively, successfully completed the full processes of production, inspection and delivery, and set off officially for the site of a photovoltaic project in the Philippines. This achievement not only marks a major breakthrough for Guangzhou Guanggao High-Voltage Electric Co., Ltd. (hereinafter referred to as "Guanggao Electric") in its in-depth development of the new energy market in Southeast Asia, but also attests once again to the competitiveness of China's high-end power equipment in the overseas photovoltaic sector. It injects a powerful "Chinese impetus" into the transformation of the local energy structure.         This oil-immersed photovoltaic transformer is designed around the core concepts of high efficiency & energy saving, stability & reliability, and environmental adaptability. Integrating a host of cutting-edge industry technologies, it is perfectly tailored to the actual operating conditions of photovoltaic projects in the Philippines. In terms of performance, the product features low no-load and load losses, delivering high efficiency and energy conservation, maintenance-free operation, strong resistance to sudden short circuits and excellent adaptability to harsh environments – all of which help boost the per-kilowatt-hour revenue of the projects. Addressing the typical characteristics of photovoltaic power generation, namely intermittency and volatility, the equipment boasts super impact resistance and durability for frequent start-stop cycles. Equipped with an on-load tap changer, it can automatically adjust the transformation ratio in response to changes in solar irradiance, ensuring a stable output voltage and effectively mitigating the impact of grid fluctuations on the utilization of photovoltaic power. The transformers exported to the Philippines this time are high-end photovoltaic power equipment tailor-made by Guanggao Electric, based on its in-depth insight into the market demands of Southeast Asia. From early-stage demand connection and solution design, to production and manufacturing, factory inspection, and further to logistics distribution and technical handover, Guanggao Electric has provided one-on-one customized services throughout the entire process. It has accurately met the project’s specific requirements for capacity, voltage class and environmental adaptability, and won high recognition from the customer with its professional capabilities.    In recent years, under the guidance of the Belt and Road Initiative, Guanggao Electric has actively laid out its overseas new energy market and focused on the R&D and promotion of power equipment in photovoltaic, energy storage and other fields. Relying on its superior product quality, leading technical level and comprehensive service system, the company has gradually built a sound brand reputation in Southeast Asia, Africa, Europe, America and other regions. The successful delivery of the 50MVA/69kV and 32.5MVA/69kV photovoltaic transformers this time not only provides reliable core power equipment for the photovoltaic project in the Philippines, but also lays a solid foundation for Guanggao Electric to further expand the Southeast Asian market. Going forward, Guanggao Electric will continue to be driven by technological innovation, deepen its layout in the new energy power equipment sector, and constantly optimize product performance and solutions. We will help more overseas countries achieve the upgrading of their energy structures, and let "Intelligent Manufacturing from China" contribute more to the global green development.
  • Honor Proves Strength; Integrity Builds Brand
    10-28 2025
    Time speaks through silence, witnessing the power of perseverance; years leave marks without a sound, engraving the footprints of striving. Since its establishment, Guanggao Electric has always regarded honest operation as its fundamental principle. On August 26, 2025, the company was honored again as a "2021-2024 Contract - Abiding and Credit - Valuing Enterprise". Having won this honor for 22 consecutive years, this heavyweight recognition is not only a high affirmation of Guanggao's past work, but also a driving force for us to move forward. The six - character phrase "abide by contracts and value credit" carries great responsibility. Since its founding, Guanggao Electric has integrated contract and credit construction into every aspect of its operation. From the rigorous signing of each contract to the earnest fulfillment of every clause, and from cooperation with customers to collaboration with suppliers, we have always adhered to the principle of "treating each other with sincerity and keeping faith", interpreting the connotation of integrity through practical actions. Honor is not an end, but a new starting point. This honor belongs not only to Guanggao Electric, but also to the customers and partners who have trusted and supported us all along. It is your trust that gives us the motivation to uphold integrity, and your company that enables us to go further on the road of integrity. In the future, Guanggao will continue to take integrity as the cornerstone, constantly improve service quality and performance capacity, and work with you to create a better tomorrow!
  • Congrats to Guanggao Electric on Successfully Passing Lightning Impulse Wavefront Time Measurement Verification!
    10-28 2025
    As Guanggao Electric marches toward new heights in power equipment testing, exciting news arrives! Recently, leveraging its outstanding technical strength and rigorous quality control system, the company successfully passed the lightning impulse voltage waveform front-time measurement proficiency test organized by Guangdong Product Quality Supervision and Inspection Institute. This marks the company’s leading position in transformer testing technology in the industry, providing a more solid guarantee for the safe and stable operation of power systems. Lightning impulse voltage test is a key link in evaluating transformer insulation performance. As a crucial parameter for measuring lightning impulse voltage waveforms, front-time accuracy directly affects the performance evaluation of transformers under transient overvoltage conditions like lightning. This proficiency test gathered many authoritative institutions and outstanding enterprises in the industry, with extremely fierce competition. Facing strict testing standards and complex verification procedures, Guanggao’s technical team rose to the challenge. To ensure the smooth passage of this proficiency test, the company made careful preparations months in advance. Technical backbones conducted in-depth research on the latest industry standards and specifications, fully upgraded and calibrated measurement equipment, and repeatedly optimized measurement schemes. During the verification process, team members operated each link accurately with exquisite professional skills and rich practical experience, strictly controlled data collection and analysis, and finally completed the task with excellent results. The accuracy and reliability of the measurement results were highly recognized by the verification institution. Successfully passing this proficiency test is an important milestone in Guanggao’s development. It not only demonstrates the company’s profound accumulation in transformer testing technology but also reflects its unremitting pursuit of product quality and technological innovation. For a long time, Guanggao has always adhered to the development concept of "taking technology as the core and quality as the life", continuously increasing R&D investment, introducing advanced technologies and equipment, and cultivating professional talent teams. Looking ahead, taking this as an opportunity, Guanggao will continue to improve its technological innovation capabilities and service levels, expand the breadth and depth of the testing field, and provide customers with more high-quality and reliable transformer testing solutions. It will continue to work with industry partners to jointly promote the progress of power equipment testing technology and contribute more to building a safe, efficient and stable power system!
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