Technical Specifications Three‑phase current and voltage measurement inputs, multiple digital input channels, relay output contacts, P5 communication interface. Supports RTD temperature sensor input for generator winding and bearing monitoring. Operating ambient temperature ‑20 ℃ to +65 ℃, storage temperature ‑40 ℃ to +85 ℃, relative humidity 5%‑95% non‑condensing. Front‑panel LCD display and operation keypad.
Functional Features Provides generator overload, over‑current, over‑voltage, under‑voltage, reverse power, phase unbalance and ground fault protection. Monitors generator temperature status via RTD sensors. Records fault snapshot, unit start‑stop events and operating trend data. Measures generator three‑phase electrical parameters. Supports local manual operation and remote control command via industrial communication. Configurable alarm and trip output logic.
Performance Parameters High‑precision electrical measurement accuracy, multiple generator‑oriented protection characteristic curves, large‑capacity fault event storage, stable communication data exchange performance.
Material Composition Flame‑retardant engineering plastic enclosure. Main CPU processing circuit board, generator‑dedicated signal conditioning modules, relay output assemblies. Front‑panel LCD display and keypad parts. Screw‑type field wiring terminal blocks. Metal panel mounting clip accessories.
Structural Characteristics Standard panel‑mount housing structure. Front panel integrates LCD display, status LED indicators and operation push‑buttons. Rear side concentrates CT/PT signal terminals, digital I/O terminals and communication interface terminals. Mounting clips secure relay inside cabinet door cut‑out opening.
Working Principle Current and voltage signals from generator side instrument transformers transmit to relay measurement ports. Internal processor samples generator electrical parameters, executes various protection algorithm calculation.
Installation Requirements Install relay into cabinet panel cut‑out and fasten mounting clips. Complete CT, PT, digital input‑output wiring strictly follow official schematic drawing. Connect communication and RTD field cables. Power‑on device, configure generator nameplate parameters and protection setting values, perform function verification test.
Usage Notes CT and PT secondary circuits must strictly avoid open‑circuit risk. Protection setting parameters shall match actual generator unit specifications.
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