38KV Auto Circuit Recloser

It adopts a pillar-type three-phase solid-sealed pole structure, with current transformers and voltage sensors integrated within the poles. Combined with a permanent-magnet operating mechanism and a three-phase direct-acting transmission system, it achieves precise and synchronous three-phase operation. The device supports both electric switching and manual tripping from the front of the enclosure (manual tripping adopts a three-phase linkage mechanism). The enclosure is equipped with a mechanical counter to display the number of switching operations.

The auto circuit recloser has an IP65 protection rating and a mechanical life of no less than 10,000 operating cycles, making it a key piece of equipment for smart grid construction and for improving power supply stability and user experience. It uses vacuum as the arc-extinguishing medium, ensuring reliable arc-extinguishing performance.

The rated breaking current is 16 kA, the rated short-time withstand current is 16 kA for 3 seconds, and the rated short-circuit breaking current has a breaking capacity of not less than 30 operations. The device can respond rapidly to short-circuit faults, efficiently interrupt fault currents, and restore power supply through its automatic reclosing function, significantly reducing power outage losses.

It exhibits excellent insulation performance, with a rated power-frequency withstand voltage of 70 kV across the contact gap and a rated lightning impulse withstand voltage of 170 kV to ground and between phases. The minimum external creepage distance is 31 mm/kV, effectively resisting grid overvoltage surges and corrosion in complex outdoor environments, thereby ensuring long-term stable operation.