Description
Basic Parameters
Brand / Series: GE Multilin (UR Series)
Protected Objects: Large and medium-sized synchronous generators (steam turbine / gas turbine / water turbine)
Processor: 32-bit RISC, high-performance real-time processing
Sampling Accuracy: 64 samples per cycle, 0.5 ms event resolution
Power Supply: 125/250 VDC (Type H), wide-range redundant power supply
Dimensions: 19-inch standard rack (vertical mounting)
Protection & Certifications: IP20, CE, UL, RoHS, IEC 61850
Protected Objects: Large and medium-sized synchronous generators (steam turbine / gas turbine / water turbine)
Processor: 32-bit RISC, high-performance real-time processing
Sampling Accuracy: 64 samples per cycle, 0.5 ms event resolution
Power Supply: 125/250 VDC (Type H), wide-range redundant power supply
Dimensions: 19-inch standard rack (vertical mounting)
Protection & Certifications: IP20, CE, UL, RoHS, IEC 61850
Core Functions
Stator differential protection, 100% stator earth fault protection (requires GPM-S module), rotor earth fault protection (requires GPM-F module)
Loss of excitation / overexcitation, reverse power, negative sequence, overcurrent / overvoltage, frequency deviation, out-of-step blocking
Communication & Redundancy (GE Vernova)
3 independent Ethernet ports (supports IEC 61850, Modbus TCP, PRP redundancy)
RS485 (Modbus RTU), RS232 (for local commissioning)
RS485 (Modbus RTU), RS232 (for local commissioning)
Monitoring & Waveform Recording
Electrical Measurement: Current, Voltage, Active Power, Reactive Power, Frequency, Harmonics
Event Logging: 1024 time-stamped events
Fault Recording: Up to 64 fault records, 16 synchronous channels
Event Logging: 1024 time-stamped events
Fault Recording: Up to 64 fault records, 16 synchronous channels
High Availability Design
Built-in hardware self-diagnosis, redundant key circuits, hot standby switchover
CyberSentry cybersecurity (NERC CIP compliant)
CyberSentry cybersecurity (NERC CIP compliant)
Application Scenarios
Power Plants: Main protection for generators in thermal power, hydropower, wind power and photovoltaic power stations
Industrial Power Generation: Protection for generators and generator-transformer units in captive power plants of metallurgy, chemical and oil & gas industries
Substations: Protection for synchronous condensers and shunt reactors in large substations
High-end Applications: Smart power stations requiring IEC 61850, process bus and PRP redundancy (GE Vernova)
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