Technical Specifications Enhanced over‑current, earth‑fault, directional and negative‑sequence protection functions. Expanded configurable analog input, binary input and binary output channels. Supports IEC61850, Modbus TCP, IEC60870‑5‑103 communication protocols. Auxiliary power supply 80‑250 V DC / 85‑265 V AC. Typical power consumption 13 W. Operating temperature ‑25 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Front‑panel IP40, rear terminal area IP20. Complies with CE and IEC standards.
Functional Features Provides comprehensive multi‑function protection for medium‑voltage distribution feeders. Measures multi‑group electrical parameters including current, voltage, power and energy. Collects status signals of circuit‑breakers and disconnectors, supports local and remote switch control. Stores abundant fault event logs and high‑resolution disturbance waveforms. Front‑panel HMI completes status check and parameter configuration. LED indicator array displays power, running, trip and alarm status. Built‑in comprehensive hardware self‑diagnosis function.
Application Scenarios Installed inside medium‑voltage switchgear cabinet. Used for feeder protection and control for utility and industrial medium‑voltage power distribution systems. Applied in distribution automation projects requiring enhanced I/O capacity.
Performance Parameters Protection response time meets medium‑voltage power grid protection standards. Disturbance recorder captures high‑speed fault sampling data. Event log supports millisecond‑level time‑stamp recording. Measurement accuracy satisfies industrial distribution monitoring requirements. Internal hardware faults trigger clear alarm output.
Installation Requirements Fasten device firmly inside medium‑voltage switchgear cabinet. Connect auxiliary power supply strictly within rated voltage range. Complete CT, VT and binary‑loop wiring according to engineering schematics. Connect communication cables for remote monitoring. Download protection settings and project configuration files by supporting engineering software. Implement reliable protective grounding complying with power industry specifications. Verify front‑panel LED working status after power‑on.
Usage Notes Apply anti‑static protection before touching internal circuit assemblies. Comply with high‑voltage safety rules for CT and VT secondary circuit work.
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