As a leading domestic source manufacturer of power distribution equipment, Junray Electrical has dedicated years to deep specialization within the field of power transformers. Focusing on the core requirements of voltage conversion and energy transmission, the company has developed a comprehensive product matrix encompassing two major series—dry-type and oil-immersed transformers—with customizable capacities ranging from 100 kVA to 10,000 kVA. Perfectly tailored to meet diverse indoor, outdoor, and varying load-scale transformation needs, these products provide customers with highly efficient, energy-saving, and reliable core transformer equipment. Junray Electrical’s solutions are widely utilized in high-end commercial applications, including engineering tenders, power grid modernization projects, industrial infrastructure support, and new energy sector integration.
Junray Electrical’s power transformers address diverse transformation requirements across various scenarios, forming a complete product ecosystem designed to meet the customized needs of a wide range of clients:
For indoor environments with stringent fire safety requirements, we offer epoxy resin-cast dry-type transformers. These units contain no insulating oil and possess exceptional fire-retardant properties, allowing them to be installed directly within indoor power distribution rooms without the need for a dedicated fire-proof transformer enclosure. Covering a capacity range of 100 kVA to 2,500 kVA, they are perfectly suited for fire-sensitive indoor settings such as shopping malls, hospitals, office buildings, and factories. Furthermore, they feature maintenance-free operation and low energy loss.
To address large-capacity outdoor power distribution needs, we provide oil-immersed distribution transformers. These units utilize insulating oil for cooling and cover a capacity range of 100 kVA to 10,000 kVA. Offering a lower cost point compared to dry-type transformers, they can be installed directly outdoors. They are ideally suited for scenarios with high demands for both capacity and cost-efficiency—such as large-scale factories, outdoor substations, rural power distribution networks, and major photovoltaic power stations—and are characterized by mature technology and stable operation.
For projects with unique requirements, we offer specialized custom transformers. We can tailor specifications—including voltage levels, capacity, insulation classes, and cooling methods—to align precisely with a client's project needs. Examples include high-altitude transformers, salt-mist-resistant coastal transformers, low-loss energy-saving transformers, and on-load voltage-regulating transformers. These specialized units are designed to meet the specific environmental conditions and functional demands of diverse and unique projects.
Junray Electrical’s power transformers are built upon the core principles of "high efficiency, energy conservation, stability, and reliability." All products are manufactured in strict compliance with national transformer standards—such as GB 1094—and international IEC standards. Prior to leaving the factory, every transformer undergoes a comprehensive inspection process—including no-load loss tests, load loss tests, withstand voltage tests, and insulation tests—to ensure its long-term, stable operation.
In-House Manufacturing and End-to-End Quality Control: From the production of silicon steel cores and windings to final assembly and commissioning, the entire manufacturing chain is controlled in-house. This eliminates the quality risks associated with assembling purchased components, thereby safeguarding the transformer's core performance metrics—such as loss levels, insulation integrity, and heat dissipation—and ensuring long-term energy efficiency and stability.
Low-Loss Energy-Saving Technology: By utilizing high-quality grain-oriented silicon steel cores combined with optimized winding designs, our transformers significantly reduce both no-load and load losses. These loss levels fall below the national Grade 1 energy efficiency standard, enabling customers to realize substantial savings on electricity costs over the long term.
Customization Capabilities: We offer full customization capabilities across our entire range of transformers. We can tailor capacity, voltage levels, specific functions, and dimensions to align with our clients' specific project requirements, thereby meeting the unique needs of diverse projects.
Commercial Adaptability: We offer two product versions to suit various commercial contexts: a generic, unbranded version and a version under the "Junray" brand. This flexibility caters to a wide range of scenarios—including engineering tenders, power grid upgrades, and export trade—effectively meeting our clients' diverse branding and distribution channel requirements.
As a primary manufacturer of transformers, Junray Electrical offers its clients the following capabilities:
Professional Transformer Solution Design: Tailored to specific project requirements, we provide expert transformer selection and solution design services, optimizing project costs while enhancing energy efficiency.
Rapid Delivery Capabilities: We ensure fast turnaround times—shipping standard transformers within 7 days and delivering custom-engineered, specialized transformers within 20 days—to meet the demands of rapid project deployment.
Comprehensive Technical Support: We provide end-to-end technical assistance, encompassing pre-sales solution design, installation guidance during implementation, and post-sales operation and maintenance training, thereby offering full-lifecycle technical assurance to eliminate any project-related concerns for our clients.
Flexible Cooperation Models: We support a variety of collaboration models—including OEM/ODM services, bulk supply for large-scale projects, and support for power grid tenders—to accommodate the diverse partnership requirements of different clients.
Junray Electrical remains steadfast in its mission to achieve "Efficient Transformation, Empowering Power Distribution." We provide global clients with high-quality, cost-effective power transformers, helping to ensure the efficient, energy-saving, and stable operation of their power transmission and distribution systems.
