GE Multilin 850

CHAPTER 4: SETPOINTS PROTECTION
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 4–109
• Negative Sequence Instantaneous Overcurrent Protection (50_2)
• Negative Sequence Directional Overcurrent Protection (67_2)
• Broken Conductor
• Load Encroachment
• Thermal Overload (49)
Voltage Elements
• Undervoltage Curves
• Phase Undervoltage Protection (27P)
• Timed Undervoltage Protection (27T)
• Auxiliary Undervoltage (27X)
• Phase Overvoltage Protection (59P)
• Auxiliary Overvoltage Protection (59X)
• Neutral Overvoltage Protection (59N)
• Negative Sequence Overvoltage Protection (59_2)
Admittance Elements
• Neutral Admittance (21YN)
Power Elements
• Directional Power (32)
• Wattmetric Ground Fault (32N)
Frequency Elements
• Fast Underfrequency
• Underfrequency (81U)
• Overfrequency (81O)
• Frequency Rate of Change (81R)