Incoming Line Automatic Transfer Switch Protection Device

The Incoming Line Automatic Transfer Switch Protection Device from Zhejiang Chenhai Electric belongs to the Microcomputer Protection Devices family. It is designed for 35kV and below power systems, providing automatic transfer between two incoming power sources. When the primary source fails (overvoltage, undervoltage, or loss of voltage), the device quickly transfers the load to a backup source. Once the primary source returns to normal, it automatically transfers back (auto-recovery). The device also includes comprehensive protection functions such as three-stage overcurrent, zero-sequence overcurrent, post-acceleration, charging protection, and overload alarm. Communication is via RS-485 with Modbus or IEC-101 protocols. This device works seamlessly with Circuit Breakers to ensure safe switching of high currents. For complete energy monitoring, pair it with Power Meters & Rail-mounted Energy Meters to track power consumption before and after transfer. In industrial automation, i…

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