The evolution of distribution networks towards smart grids requires field devices that can seamlessly integrate remote control with local manual backups. The PGS-12/24/40.5/630-20 supports triple operation modes—Manual, Electric, and Remote (SCADA)—providing utilities with the flexibility to automate fault management while retaining manual override for emergencies or maintenance.
Manual operation is facilitated via a front-accessible handle using standard hot sticks. This mode is essential for initial commissioning, emergencies during power outages, or in networks without RTUs. The mechanism features a distinct, color-coded position indicator (Red=Closed, Green=Open) visible from the ground, ensuring safety for line crews ..jpg)
Electric operation is handled by a motor drive integrated with the spring charging mechanism. Equipped with a 24V DC battery in the control cabinet, the PGS can perform more than 50 continuous open-close operations on a single charge . This is crucial for frequent switching of capacitor banks or automated user boundary protection (watchdog). The battery management system includes an automatic charger that activates when external AC power is present.
The core of smart grid readiness is the Remote (SCADA) mode. Utilizing an FTU (Feeder Terminal Unit) or RTU interface, the PGS communicates via standard protocols (RS485/Modbus) or optional GPRS/wireless modems . Operators can remotely monitor switch position, SF6 gas pressure, and battery status, and execute opening/closing commands from a control center. This feature, combined with the load break switch’s 400-cycle load switching endurance, enables fully automated fault location, isolation, and service restoration (FLISR) schemes.
Therefore, the PGS series is not merely a load break switch but a versatile actuator for modern smart grids, bridging the gap between legacy manual networks and advanced distribution automation systems. Putai also supports customization and the supply of related medium-voltage accessories to meet system integration needs.
(Article content references network resources.)
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