Synchronization and paralleling relay for generators and power systems
Supports 6xV voltage inputs
Available with text or graphical display
Consideration of transformer vector group and tap changer
Synchronization record (instantaneous or RMS)
Full SIPROTEC 4 control functionality
Protection functions (optional):
Undervoltage protection (27)
Overvoltage protection (59)
Frequency protection (81)
Rate-of-frequency-change protection (81R)
Voltage vector jump monitoring
Monitoring functions:
Self-supervision of paralleling function
Measurement of operational values
8 oscillographic fault records
Communication interfaces:
IEC 60870-5-103, IEC 61850, PROFIBUS-DP, MODBUS RTU, DNP 3.0
Service and front interface for DIGSI 4 (modem)
Time synchronization via IRIG-B / DCF77
Applications: synchronization and paralleling in power plants, industrial systems, and utilities
Model: 7SR105 (Rho Series – Motor Protection)
Case Type: Size 4, 4U high, non-draw-out
Binary Inputs/Outputs: 6 BI/Os
Communication: Front USB port and rear RS485 (MODBUS RTU / IEC 60870-5-103)
Inputs: RTD temperature inputs (optional)
Display: LCD with local and remote measured value visualization
Control: Integrated motor start/stop operation and trip command
Functions: Protection, monitoring, metering, and data logging
Protection Functions:
Stall Protection (14)
Undercurrent (37)
Current Unbalance (46)
Phase Reversal (46Ph Rev)
Start Protection (48/66)
Motor Thermal Overload (49R)
Time Overcurrent (50/51)
Earth Fault (50/51G/N)
Backspin Protection (81B)
Temperature Inputs (RTD)
Supervision: CB Fail (50BF), CT Supervision (60CTS), Trip Circuit Supervision (74T/CCS)
Monitoring: Instrumentation, Event/Fault/Waveform records
Main Features:
Cold Load Settings
Two Setting Groups
Password Protection
Self-Monitoring
Circuit Breaker Trip Counter
Compact & reliable motor protection
Compliance: IEC 60255
