Technical Specifications Rich motor‑specific protection functions: overload, locked‑rotor, phase‑unbalance, earth‑fault, negative‑sequence and under‑voltage protection. 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 12 W. Operating temperature ‑25 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Front‑panel IP40, rear terminal‑side IP20. Complies with CE and IEC standards.
Functional Features Provides complete protection for medium‑voltage AC motors. Measures motor current, voltage, power and thermal load parameters. Collects auxiliary contact signals of motor circuit‑breaker, supports local and remote start‑stop control. Stores fault event logs and 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 motor control cabinet. Used for large‑capacity medium‑voltage motor protection in petrochemical, mining and metallurgy industries. Applied for industrial automation projects requiring motor remote monitoring.
Performance Parameters Protection response time meets medium‑voltage motor protection standards. Disturbance recorder captures fault transient sampling data. Event log supports millisecond‑level time‑stamp recording. Measurement accuracy satisfies industrial monitoring requirements. Internal hardware faults trigger clear alarm output.
Installation Requirements Fasten device firmly inside medium‑voltage motor control 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 motor protection settings and project configuration files by supporting engineering software. Implement reliable protective grounding complying with industrial 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 secondary circuit work.
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