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Auto Recloser Reliable Protection in Smart Grid Automation

11 14, 2025
Posted By: Peter

As power distribution networks continue to evolve, reliability and automation have become the core priorities for utilities worldwide. The auto recloser plays a crucial role in ensuring power continuity and system stability, especially in medium-voltage distribution lines where unexpected faults can occur due to weather, equipment aging, or temporary short circuits.

 

An auto recloser is designed to automatically detect faults, interrupt the current, and restore power after confirming that the fault is temporary. This self-restoring capability greatly reduces outage time and maintenance costs. With the integration of advanced sensors and communication modules, modern reclosers now support remote monitoring, real-time control, and SCADA integration, making them an essential component of smart grid automation.

 

Auto Recloser Reliable Protection in Smart Grid Automation

 

For 11kV–38kV distribution networks, utilities often choose intelligent auto reclosers that combine protection, measurement, and control functions in one unit. The equipment not only enhances grid resilience but also improves operational efficiency by minimizing manual intervention and allowing remote fault management from control centers.

 

Putai provides reliable medium-voltage auto reclosers designed for a wide range of overhead and pole-mounted applications. Built with advanced vacuum interrupters and smart controllers, Putai reclosers deliver safe, durable, and automation-ready solutions for modern distribution systems.

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Single phase recloser
  • Low current power sensing:Can work on a line current above 1A (for 40A model) or 2A (for 100A model and 20 0A model), it gets power from line current.
  • Current sensors:There is a current sensor insides RYDR, it covers both class 0.5 and class 5P, as it is a low-po wer coil but not a regular current transformer.
  • Various protections:Support reclosing up to 3 times,Support instant trip/delayed trip/time-inverse trip including IEC and ANSI curves.
  • Local & Remote operations:With a single hot stick, RYDR can be operated Open or Close. RYDR can also be oper ated through a WIFI to collect event logs or perform Open or Close operations without using any cables due to the RF connection.

 

Recloser control
  • Programmable Logic Custom Protection:Support custom protection logic editing without hardware replacement for complex grid needs.
  • Full-Range Industrial Protocol Compatibility:Support mainstream protocols, optional diversified protocols for traditional and new energy grids.
  • High-Precision Harmonic Sampling & Acquisition:64-order harmonic analysis, dual voltage ranges, multi expandable signal acquisition channels.
  • Abundant Interfaces & Flexible Hardware Expansion:Abundant ports, expandable input/output channels, optional optical fiber and positioning modules.
  • Comprehensive & Ultra-Fast Fault Protection:Complete ANSI protection, multiple ranging modes, 20ms ultra-fast trip response.
  • Mass International Standard Protection Curves:Preloaded various international standard curves and custom curves for global grid standards.

 

OVR-38/800-16 THREE-PHASE RECLOSER
  • High-Precision Sensing: Features an integrated electronic sensor offering high accuracy, wide range, and strong noise immunity.
  • Fully Sealed Pole: APG-process epoxy encapsulation creates a unitary, robust structure resistant to condensation and mechanical stress.
  • Dual-Side Voltage Sampling: Equipped for voltage sampling on both the power supply and load sides of the circuit.
  • Versatile Circuit Control: Suitable for line segmentation, connection, branching, and demarcation applications.
  • High-Performance Permanent Magnet Actuator: Employs a permanent magnet mechanism for long mechanical and electrical lifespan.
  • Compact & Reliable Design: Achieves a small size while maintaining high overall system reliability.
ZW32-36.2kV Outdoor Pole Mounted Vacuum Auto Recloser
  • Vacuum Interruption:Safe, stable breaking; >30,000 operations; maintenance-free
  • Solid Insulation Design:Epoxy and silicone; high UV, temperature, and moisture resistance
  • IP65 Protection:Fully sealed; ideal for coastal, humid, polluted environments
  • Sensor Integration:Built-in voltage, current, and zero-sequence sensors for protection and monitoring
  • Smart Controller Support:IEC 61850-compliant; remote control, signal, measurement, and automation ready
  • Reliable Operating Mechanism:Permanent magnet & spring mechanism; backup action without external power
  • Flexible Communication:Supports remote/local control and GPRS/fiber communication protocols
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