The ZW32-15.6kV Outdoor Pole Mounted Vacuum Auto Recloser incorporates advanced integrated sensor technology that provides the critical data needed for modern distribution automation. Equipped with three-phase current transformers (600:1A or 800:1A) and capacitive voltage sensors, the device delivers precise real-time measurements essential for protection coordination and system monitoring .
The current transformers within the recloser enable accurate overcurrent and short-circuit protection. With phase current setting ranges from 20A to 1260A, the intelligent controller can be precisely configured to match specific network characteristics and protection requirements . This flexibility ensures selective protection coordination, minimizing outage impact while maintaining system stability during fault conditions.
For voltage monitoring, the capacitive voltage sensors provide a secondary output of 3.25V/√3, feeding critical voltage data to the controller for comprehensive protection functions . This voltage sensing capability enables the recloser to perform under-voltage and over-voltage protection, with settings ranging from 90% to 185% of rated voltage. It also supports zero-sequence voltage and current detection for sensitive earth fault protection, ensuring comprehensive fault coverage.
The sensor data supports the "four remote" functions of distribution automation: remote control, remote measurement, remote signaling, and remote adjustment . This enables utilities to implement sophisticated feeder automation schemes, including fault detection, isolation, and service restoration (FDIR), significantly improving grid reliability and operational efficiency.
Therefore, with its integrated sensing and smart control capabilities, the ZW32-15.6kV recloser is a key enabler for data-driven distribution management. Putai also supports customization and the supply of related medium-voltage accessories to meet system integration needs.
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