Generator Protection
Generator protection products and systems provide complete primary and backup protection for all types of generator faults. They are suited for use in utility-, industrial-, and commercial-scale power generation systems.
Protective Relays
These relays can be applied alone or combined for a complete generation protection solution.
System Components
Combining these components with generation relays expands their functionality.
Generator Protection Features
Standard feature
Model option
ƒ This function may be created using settings
Features | |||||
|---|---|---|---|---|---|
Applications | |||||
Generator Protection | |||||
Unit/Overall (Generator and Generator Step-Up [GSU]) Differential Protection | |||||
Independent GSU Transformer Protection | |||||
Pumped-Storage Hydro Protection | |||||
Integrated Synchronizer | |||||
Breaker Failure Protection | ƒ | ||||
Equipment Thermal Monitoring | |||||
Generator Intertie Protection | |||||
Feeder Protection | |||||
Protection | |||||
21C Compensator Distance | |||||
21C Compensator Distance | |||||
21P Phase Mho Distance | |||||
24 Overexcitation (Volts/Hertz) | |||||
25 Synchronism Check | |||||
27/59 Under-/Overvoltage | |||||
27I/59I Inverse-Time Undervoltage/Overvoltage | |||||
32 Directional Power | |||||
40 Impedance-Based Loss-of-Field | |||||
40 Capability-Based Loss-of-Field | |||||
46 Current Unbalance | |||||
46 Harmonic Current Unbalance | |||||
49 Thermal Model | |||||
49R Thermal Overload (RTD) | |||||
50 (P,N,G) Overcurrent (Phase, Neutral, Ground) | |||||
50Q Negative-Sequence Overcurrent | |||||
51 (N,G) Time-Overcurrent (Neutral, Ground) | |||||
51 (P,Q) Time-Overcurrent (Phase, Neg. Seq.) | |||||
60 Loss-of-Potential | |||||
60 Voltage Balance Loss-of-Potential | |||||
60 (P,N) Independent Split-Phase (Phase, Neutral) | |||||
64G 100 Percent Stator Ground | |||||
64G Intermittent Ground Fault Detection | |||||
64F Field Ground | |||||
67 (N,G) Directional Overcurrent (Neutral, Ground) | |||||
67Q Negative-Sequence Directional Overcurrent | |||||
78 Out-of-Step | |||||
78 Dual Zone (Generator and System) Out-of-Step With Pole Slip Counters | |||||
78VS Vector Shift | |||||
81 Over-/Underfrequency | |||||
81R Rate-of-Change-of-Frequency | |||||
87 Stator Differential | |||||
Transformer Differential | |||||
REF Restricted Earth Fault | |||||
Separate Neutral Overcurrent | |||||
Inadvertent Energization | ƒ | ||||
Flashover Protection | ƒ | ƒ | |||
Instrumentation and Control | |||||
SELogic Control Equations/Remote Control Switches | |||||
Nonvolatile Latch Control Switches | |||||
Multiple Settings Groups | |||||
Station Battery Monitor | |||||
Breaker Wear Monitor | |||||
Event Report (Multicycle Data)/Sequential Events Recorder | |||||
Disturbance Recording (up to 300 seconds) | |||||
Demand Meter | |||||
Load Profile Report | |||||
RTD (Resistance Temperature Detector) Inputs | |||||
Ethernet | |||||
Built-In Web Server | |||||
EtherNet/IP | |||||
IEEE 1588 Precision Time Protocol (PTP) | |||||
IEC 61850 | |||||
IEC 61850 Edition 2 | |||||
IEC 60870-5-103 | |||||
Parallel Redundancy Protocol (PRP) | |||||
DNP3 Serial | |||||
DNP3 LAN/WAN | |||||
Simple Network Time Protocol (SNTP) | |||||
Modbus TCP | |||||
Modbus RTU Outstation | |||||
IEEE C37.118 Synchrophasors | |||||
Synchrophasor Protocol Edition | C37.118 2011 | C37.118 2005 | C37.118 2005 | C37.118 2005 | |
Mirrored Bits Communications | |||||
Miscellaneous Features | |||||
Dual Frequency Zones (Generator and System) | |||||
Frequency Tracking Range | 5–120 Hz | 20–70 Hz | 15–70 Hz | 15–70 Hz | 15–70 Hz |
Accepts Wye or Open-Delta Voltage Transformers | |||||
Connectorized (Quick Disconnect) Available | |||||