Description
Description of AB-3S Series Outdoor High-voltage Permanent Magnet Vacuum Circuit Breaker
The AB-3S Series Outdoor High-voltage Permanent Magnet Vacuum Circuit Breaker, also known as a recloser, is a new-generation outdoor pole-mounted switch independently developed to meet the evolving demands of smart grids. Specifically engineered for three-phase AC 50Hz power systems with a rated voltage of 12KV, it serves as a critical outdoor power distribution component for switching various types of loads and adapting to high-frequency operation scenarios, while boasting the capability of interrupting short-circuit currents multiple times reliably.
Composed of the SYW1-12 permanent magnet vacuum circuit breaker and the CPT-31G reclosing controller, this series integrates comprehensive functions including measurement, protection, control, communication, and real-time detection, forming an integrated solution for smart distribution network protection and control. Its advanced design makes it the preferred equipment for realizing distribution network intelligence, automation, and substation miniaturization, widely applicable as an outgoing line switch on the 24KV side of substation main transformers and a pole-mounted switch in distribution networks.
Manufactured in strict compliance with international and domestic technical standards such as GB1984-2014, JB/T7570-1994, and IEC60056, the AB-3S series ensures stable performance, high compatibility, and reliable safety, fully meeting the strict requirements of modern smart grid operation and outdoor harsh environment operation.
Parameter of AB-3S Series Outdoor High-voltage Permanent Magnet Vacuum Circuit Breaker
| name | unit | parameter | name | unit | parameter |
| rated voltage | kV | 24 | rated short time current | kA | 20 |
| rated current | A | 630/1250 | rated short circuit duration | S | 4 |
| rated frequency | Hz | 50 | rated peak current rating | kA | 50 |
| rated lightning impulse withstand voltage (peak) | kV | 75/85 fracture | rated short-circuit closing current | kA | 50 |
| Rated short-time power frequency withstand voltage (1 min) | kV | Wet test: 34; Dry test: 42; Fracture: 48 | Secondary circuit power frequency withstand voltage (1 minute) | kV | 2 |
| rated short-circuit breaking current | kA | 20 | rated operating sequence | 0-0.3s-CO-180s-CO | |
| rated short-circuit current interruption times | Next | 30 | mechanical life | Time | 30000 |
Feature of AB-3S Series Outdoor High-voltage Permanent Magnet Vacuum Circuit Breaker
- Reliable Vacuum Arc-extinguishing Performance: Adopts advanced vacuum arc-extinguishing technology to ensure stable and reliable circuit breaking, with minimal contact wear and no need for regular maintenance, reducing operational and maintenance costs while achieving pollution-free operation.
- Three-phase Independent Permanent Magnet Mechanism: Equipped with a three-phase independent permanent magnet mechanism, featuring a simple structure, fast response, and stable reliability, without the need for regular maintenance. Each mechanism unit is connected to the three-phase vacuum interrupter, ensuring the mechanism characteristics of each interrupter and reliably completing the standard operating sequence.
- High-performance Outdoor Insulation: The external insulation material adopts imported outdoor epoxy resin, which has excellent pressure resistance and weather resistance, adapting to various harsh outdoor environments. It is oil-free and SF6-free, complying with environmental protection requirements and avoiding environmental pollution.
- Comprehensive Integrated Functions: Integrates measurement, protection, control, communication, and real-time detection functions, enabling accurate monitoring of the recloser’s real-time operation status, timely warning of abnormal conditions, and effectively ensuring the safe operation of the power grid.
- Extreme Environment Adaptability: Built-in moisture-proof and low-temperature protection control, the control system can work reliably under extreme conditions of high humidity and low temperature, breaking through the limitations of harsh outdoor operating environments.
- Special Power Supply Module: Equipped with a dedicated power supply module for distribution networks, which can perform online monitoring and activation management of storage batteries, effectively extending the service life of storage batteries and improving the reliability of the power supply system.
- Flexible Communication Adaptability: Reserved with a remote communication interface, which can realize distribution network automation through Ethernet optical fiber network or GPRS channel, facilitating intelligent management and remote operation of the power grid.
- Convenient Control Modes: Supports remote/local control, and can also realize local wireless remote control and under-pole operation, meeting different operation needs of on-site personnel and improving operation convenience and safety.
- User-friendly Man-machine Interface: Equipped with a user-friendly man-machine interface, featuring full Chinese display and convenient parameter setting, reducing the difficulty of operation and improving the efficiency of on-site debugging and maintenance.
- Durable Corrosion-resistant Shell: Made of high-quality stainless steel, it has excellent corrosion resistance, no rusting, and truly achieves maintenance-free operation, significantly reducing the later maintenance workload and operational costs.
