Technical Specifications Rich protection function set including multi‑stage over‑current, earth‑fault, directional protection, negative‑sequence protection and thermal overload protection. Abundant analog input, binary input and binary output configurable channels. Supports IEC61850, Modbus TCP, IEC60870‑5‑103 communication protocols. Auxiliary power supply 80‑250 V DC / 85‑265 V AC. Typical power consumption 14.5 W. Operating temperature ‑25 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Front‑panel protection grade IP40, rear terminal area IP20. Certifications include CE and IEC standard compliance.
Functional Features Provides full‑set protection for medium‑voltage feeders. Realizes high‑precision measurement of current, voltage, power, power factor and energy. Collects multi‑group primary switchgear position signals, supports local and remote multi‑circuit‑breaker control. Stores massive sequence‑of‑event logs and long‑time high‑resolution disturbance waveforms. Front‑panel HMI supports comprehensive status browsing and parameter configuration. LED indicator array displays power, running, trip and multi‑group alarm status. Built‑in full‑coverage hardware self‑diagnosis monitors each functional unit and outputs classified alarm signals.
Application Scenarios Mounted inside substation control cabinet or medium‑voltage switchgear cabinet. Applied for feeder protection and control in large‑scale utility distribution substations, petrochemical, metallurgy and other heavy‑industry power systems. Suitable for new‑built and upgraded high‑requirement distribution automation projects.
Installation Requirements Secure device firmly inside control cabinet or switchgear cabinet. Connect auxiliary power supply strictly within rated voltage range. Complete multi‑group CT, VT, binary input‑output wiring strictly according to engineering schematic drawings. Deploy communication cables for station‑level network connection. Download protection setting parameters and complete project configuration via supporting engineering software. Implement reliable protective grounding complying with substation grounding specifications. Inspect all front‑panel LED working status after power‑on.
Usage Notes Wear anti‑static wrist strap before touching any internal circuit assemblies. Strictly follow high‑voltage safety operation procedures for CT and VT secondary‑circuit work. Hot‑swap or module disassembly under powered condition is forbidden.
There are no reviews yet.