Description
The 15.6kV MV Auto Circuit Outdoor Vacuum Recloser is an intelligent outdoor switching device specifically designed for medium-voltage distribution networks. Using vacuum as the arc-extinguishing medium, this equipment can quickly interrupt fault currents and effectively isolate short-circuits, overloads, and other faults in the distribution grid. It features an automatic reclosing function that restores power supply automatically after fault elimination, significantly reducing power outage time and improving power supply reliability. With its compact and rugged outdoor structure design, it adapts to various harsh natural environments—stable operation in high temperatures, severe cold, high humidity, or sandy conditions—making it a vital device for ensuring safe and efficient operation of medium-voltage power lines.

Key Features

High-efficiency Arc Extinguishing Performance

• Adopting vacuum arc extinguishing technology, it features strong insulation and rapid arc extinction. It prevents arc reignition, extends the equipment's service life, and reduces maintenance costs.

Precise Automatic Reclosing

• Automatically closes the circuit according to the preset program. It can distinguish between transient and permanent faults. For transient faults, it restores power supply rapidly; for permanent faults, it locks immediately to minimize the power outage scope.

Excellent Environmental Adaptability

• With a high-strength and corrosion-resistant outer shell and internal protective treatment, it can operate stably in harsh environments, adapting to temperatures ranging from -40°C to +70°C.

Intelligent Monitoring and Remote Control

• It can monitor key parameters such as current and voltage in real-time and upload data. Supporting remote opening and closing operations, it improves fault handling efficiency and the intelligent level of grid operation and maintenance.

High Safety and Reliability

• Equipped with complete mechanical and electrical interlocking devices to prevent misoperation, it has a long-life design with tens of thousands of mechanical operation cycles, ensuring stable power supply.

Parameters

Environmental requirement：

What are the technical parameters of the outdoor vacuum recloser?

• Rated Voltage: 38kV, indicating the voltage level at which the recloser can operate normally. This ensures that the insulation and electrical performance of the device meet the required standards at this voltage.

• Rated Current: Available in various specifications, such as 800A, 1200A, etc. This represents the maximum current that the recloser can carry continuously during normal operation. The appropriate rated current value should be selected based on the load current of the line.

• Rated Short-Circuit Breaking Current: Reflects the breaking capability of the recloser during short-circuit faults. Common specifications include 16kA, 20kA, etc. A higher short-circuit breaking current indicates that the recloser can more reliably interrupt short-circuit currents, protecting the safety of the power system.

• Rated Short-Circuit Making Current: Represents the maximum peak current that the recloser can close during a short-circuit fault. This value is typically greater than the rated short-circuit breaking current to ensure that the recloser can reliably close and withstand the impact of short-circuit currents at the moment of fault.

• Reclosing Time Interval: Generally adjustable between 0.5 seconds and several seconds. Depending on the requirements of different power systems and types of faults, an appropriate reclosing time interval can be set to enhance the reliability and continuity of power supply.