html{display:none} Generator and Motor Protection Features | Schweitzer Engineering Laboratories
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Generator and Motor Protection Features

FeaturesSEL-300GSEL-700GSEL-700GTSEL-700GWSEL-547SEL-710/710-5SEL-749MSEL-701SEL-849
Applications
Generator Protection            
Induction Motor Protection          
Synchronous Motor Protection                
Feeder Protection              
Breaker Failure Protection ƒ   ƒ ƒ ƒ
Equipment Thermal Monitoring  
Generator Intertie Protection              
Synchronism Check          
Integrated Synchronizer              
Protection
21P Phase Mho or Compensator Distance              
24 Overexcitation (Volts/Hertz)            
27/59 Under-/Overvoltage  
32/37 Directional/Underpower Elements  
40 Loss-of-Field          
46 Current Unbalance    
47 Phase Reversal        
49 Thermal      
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.)          
55 Power Factor ƒ ƒ ƒ    
60 Loss-of-Potential     ƒ ƒ
64G 100 Percent Stator Ground              
64F Field Ground            
67 (N,G) Directional Overcurrent (Neutral, Ground)              
78 Out-of-Step            
81 Over-/Underfrequency  
87 Current Differential            
87G Restricted Earth Fault              
Arc-Flash Detection              
Separate Neutral Overcurrent    
Inadvertent Energization ƒ ƒ              
Flashover Protection ƒ ƒ              
Broken Rotor Bar Detection                
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
Demand Meter    
Load Profile Report      
RTD (Resistance Temperature Detector) Inputs    
Ethernet        
IEC 61850        
DNP3 LAN/WAN          
Simple Network Time Protocol (SNTP)        
Modbus TCP        
Modbus RTU Outstation
Synchrophasors With IEEE C37.118 Protocol          
Mirrored Bits Communications          
Miscellaneous Features
Accepts Wye or Open-Delta Voltage Transformers    
Connectorized (Quick Disconnect) Available                

Standard Feature

Model Option

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Literature

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