The Guodian Nanjing Automation PS690U User Manual provides operation, configuration, and technical specifications for the PS690U series protection and…
The PS690U series protection and measurement device is designed for use with 110 kV and lower voltage transformers, offering high‑performance 32‑bit CPU processing, integrated measurement, control and communication functions. It supports USB programming, fault data logging, and multiple communication protocols.
The manual details the device's hardware specifications, including rated voltage, current, power consumption, measurement accuracy, temperature range, and available interfaces such as 100 M Ethernet and RS‑485 with IEC 60870‑5‑103 and Modbus support.