Intelligent Vacuum Recloser

The A-series outdoor intelligent vacuum recloser is an outdoor AC distribution device with a rated voltage of 15/27/38kV and a working frequency of 50Hz/60Hz. This device is primarily used for opening and closing load currents, overload currents, and short-circuit currents. It can also serve as control and protection electrical equipment for distribution systems in substations and industrial enterprises, particularly suitable for the transformation of urban and rural power grids.

Main Applications

The A-series outdoor intelligent vacuum recloser (hereinafter referred to as recloser) is an outdoor AC distribution device with a rated voltage of 15/27/38kV and a working frequency of 50Hz/60Hz. This device is primarily used for interrupting and closing load currents, overload currents, and short-circuit currents. It can also serve as control and protection electrical equipment for distribution systems in substations and industrial enterprises, especially suitable for the transformation of urban and rural power grids.

The switch can be used as an independent unit or connected to a central station for intelligent grid transformation.

Normative Reference Documents

IEC62271-111 Automatic Reclosers for AC Systems with Rated Voltage up to 38kV

ANSI 37.60 Automatic Reclosers for AC Systems with Rated Voltage up to 38kV

Environmental Conditions

1. Altitude: 2000 meters
2. Maximum ambient temperature: +70℃
3. Minimum ambient temperature: -40℃
4. Solar radiation intensity: 0.1W/cm² (wind speed: 0.5m/s)
5. Maximum daily temperature difference: 25k
6. Maximum wind speed: 130km/h (10-minute average wind speed at 10m above ground)
7. Load: With 10mm ice layer and 17.5m/s wind speed
8. Earthquake intensity: Less than magnitude 8

Main Features

1. The recloser adopts a three-phase pillar structure with vacuum arc extinguishing, ensuring stable current interruption and closing, no risk of combustion or explosion, maintenance-free, compact size, light weight, and long service life.
2. The recloser has a compact structure with a fully enclosed design that provides moisture-proof and anti-condensation functions, making it suitable for high-temperature and high-humidity areas.
3. The three-phase pillar uses imported outdoor epoxy resin solid insulation, which is resistant to high and low temperatures, ultraviolet rays, and aging.
4. The recloser employs a miniaturized permanent magnet operating mechanism, simple structure, reliable operation, and a mechanical life of up to 10,000 operations. The operation power consumption for interruption/closing is low, and the mechanical transmission uses a direct drive system with fewer components for higher reliability.
5. The recloser’s interruption/closing operation can be manual, electric, or remote. It can be equipped with an intelligent switch controller featuring overcurrent protection, instantaneous protection, zero-sequence protection, and reclosing functions.
6. The recloser is equipped with three-phase current transformers and six voltage sensors, which can be analyzed via the intelligent controller to achieve protection and measurement functions.
7. The recloser includes a manual locking device, preventing local or remote switching when locked.
8. The front and bottom of the recloser are equipped with open/close indicator markers for easy observation of the switch's operational status. A counter is installed at the bottom to record the number of open and close operations.