Key Features:
High-speed line differential protection
4xI inputs for precise current measurement
Text display for easy local monitoring
Supports 1-/3-pole tripping for flexible applications
Ideal for utility and industrial networks
Locally available with competitive pricing
Monitoring Functions:
Self-supervision of relay and R2R communication
Trip circuit supervision (74TC)
Measured-value supervision
Oscillographic fault recording
Event and fault logging
Switching statistics
Front Design:
User-friendly operation
PC front port for DIGSI 4 configuration
Function keys and 14 LEDs for local alarm
Communication Interfaces:
2 serial R2R protection data interfaces (ring or chain topology)
Front PC interface
System interface:
IEC 61850 Ethernet
IEC 60870-5-103
PROFIBUS-FMS / DP
DNP 3.0
Rear service/modem interface
Time synchronization via IRIG-B, DCF77, or system interface
Inputs: 4xI and 4xV
Display: 8-line text or graphical LCD
Protection Functions:
Overcurrent protection (non-directional and directional)
Motor protection and monitoring
Earth-fault protection
Thermal overload and undercurrent protection
Voltage and frequency protection
Circuit-breaker failure protection
Negative-sequence protection
Control & Logic:
Control of CBs and isolators via keyboard, binary inputs, DIGSI 4, or SCADA
Graphical visualization of switch positions
User-defined logic using CFC (interlocking, sequences, etc.)
Monitoring Functions:
Operational measured values (V, I, f)
Energy metering (Wp, Wq)
Circuit-breaker wear monitoring
Trip circuit supervision
Fuse failure monitor
8 oscillographic fault records
Motor statistics
Communication Interfaces:
IEC 61850, IEC 60870-5-103, Modbus RTU, DNP3
Electrical & optical ports, RSTP Ethernet redundancy
Front USB & service interfaces for DIGSI 4
Time sync: IRIG B, DCF77
Languages: English, Spanish, Russian, Polish, Turkish
Proven SIPROTEC 4 technology for protection, control, and automation
