Non-directional overcurrent protection with 4xI inputs
Industrial-grade reliability for feeder circuits
Protection Functions: Undercurrent (37), Broken Conductor (46BC), Negative Phase Sequence Overcurrent (46NPS), Thermal Overload (49), Overcurrent (50,51), Earth Fault (50G,50N,50SEF,51G,51N,51SEF), Directional Control (67), High Impedance REF (64H), Under/Over Voltage (27/59), Negative Phase Sequence Voltage (47), Voltage Controlled Overcurrent (51V), Neutral Voltage Displacement (59N), Under/Over Frequency (81)
Supervision Functions: CT Supervision (60CTS), Trip & Close Circuit Supervision (74T/CCS), VT Supervision (60VTS), Inrush Detector (81HBL2), Circuit Breaker Fail (50BF)
Control Functions: Auto Reclose (79)
Monitoring Functions: Primary/Secondary Currents and Earth, Line and Phase Voltages, Apparent Power & Power Factor, Real & Reactive Power, Wh & VArh Forward/Reverse, Historical Demand Records, PPS/NPS/ZPS Voltages & Currents
Authorized Siemens product with competitive pricing, local stock, and technical support in Mumbai
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
