Products

In many large-scale outdoor power distribution scenarios—such as large industrial plants and outdoor substations—the use of dry-type transformers proves cost-prohibitive, and their limited capacity often fails to meet the demands of ultra-heavy loads. The Oil-immersed Distribution Transformer was specifically developed as an economical, high-capacity solution tailored for large-scale outdoor power distribution. Utilizing insulating oil as both a cooling and dielectric medium, it offers a lower cost point compared to dry-type transformers. Perfectly suited for outdoor distribution environments, it stands as the standard, essential equipment for large-scale outdoor power distribution systems.

In many indoor power distribution environments—such as shopping malls, office buildings, and hospitals—oil-immersed distribution transformers are often utilized. However, these units contain insulating oil, resulting in poor fire safety performance and a risk of fire caused by oil leakage; furthermore, they require periodic oil changes and maintenance. In contrast, the dry-type transformer is a fire-resistant unit specifically developed for indoor power distribution applications. Devoid of insulating oil, it features windings encapsulated in epoxy resin and utilizes air cooling, offering exceptional fire safety capabilities. Consequently, it can be installed directly within indoor distribution rooms without the need to construct a separate, dedicated room for oil-immersed transformers. Moreover, it is maintenance-free—requiring no oil changes—making it perfectly suited for indoor distribution scenarios and establishing it as the standard, essential equipment for such environments.

Junray Electrical, as a professional Manufacturer, Supplier and Factory of Surge Protective Devices in China, focuses on the field of lightning overvoltage protection. We are dedicated to solving the problems of lightning strikes and overvoltage damaging equipment in power distribution lines. We can discharge surge currents and limit overvoltages. With a small size and high cost-effectiveness, it is suitable for various scenarios such as factories, photovoltaics, and communications, and supports customization. It is the standard equipment for lightning protection.

In low-voltage high-current distribution systems, using expensive circuit breakers for simple isolation not only wastes the budget but also increases the number of fault points due to the complex structure. Junray Electrical, as a leading electrical equipment manufacturer in China, has recently launched the Low Voltage Knife Switch, specifically designed for large current circuits that are not frequently operated. It innovatively incorporates a clay arc extinguishing cover, enabling it to not only serve as a power isolation switch but also safely open and close normal load currents.

Junray Electrical, as a professional manufacturer, supplier and factory of Intelligent Air Circuit Breakers in China, is specifically designed to address the issues of insufficient compatibility and lack of intelligent management for ordinary plastic housing circuit breakers. The rated current range is from 630A to 6300A. It is equipped with an intelligent protection module and RS485 communication function, allowing for remote monitoring and control.

In ordinary commercial and civilian power distribution, expensive PC-level dual power supplies often leave the budget in a tight spot, while simple single power supplies cannot meet the requirements for power continuity. As a leading electrical equipment manufacturer in China, Junray Electrical innovatively adopts a dual plastic-case circuit breaker structure, ensuring the automatic switching function while significantly reducing the procurement cost. The ATS Dual Power Automatic Transfer Switch-CB not only can automatically switch to the backup power supply when the mains power fails, but also comes with dual protection against overload and short circuit.