GE Multilin G650 Manual page 93

4.1 ENERVISTA 650 SETUP SOFTWARE INTERFACE 4 HUMAN INTERFACES. SETTINGS & ACTUAL VALUES
Table 4–10: PROTECTION ELEMENTS INCLUDED
PHASE
CURRENT
NEUTRAL
CURRENT
4
GROUND
CURRENT
SENSITIVE
GROUND
CURRENT
NEGATIVE
SEQUENCE
CURRENT
VOLTAGE
ELEMENTS
POWER
4-18
Phase TOC High Phase time overcurrent, high level (51PH)
Phase TOC Low Phase time overcurrent, low level (51PL)
Phase IOC High Phase instantaneous overcurrent, high level (50PH)
Generator Thermal
Thermal model or Thermal image unit for phases (49S)
Model
Neutral TOC Neutral time overcurrent (51N)
Neutral IOC Neutral instantaneous overcurrent (50N)
Neutral Directional Neutral directional unit (67N). Voltage, current and dual polarization.
Ground TOC Ground time overcurrent (51G)
Ground IOC Ground instantaneous overcurrent (50G)
Ground Directional Ground directional unit (67G). Voltage, current and dual polarization.
Restricted Gnd Fault Restricted Ground Fault (87G). Enhanced models only.
Sensitive Ground TOC Sensitive ground time overcurrent (51SG)Enhanced models only.
Sensitive ground instantaneous overcurrent (50SG). Enhanced models
Sensitive Ground IOC
only.
Negative Sequence
Negative sequence time overcurrent (51-2)
TOC
Negative Sequence
Negative sequence instantaneous overcurrent (50-2)
IOC
Generator Unbalance Generator current unbalance (46)
Phase UV Phase undervoltage (27P)
Phase OV Phase overvoltage (59P)
Neutral OV High Neutral overvoltage, high level (59NH)
Negative Sequence
Negative sequence overvoltage (47). Phase reversal
OV
Auxiliary OV Auxiliary overvoltage (59X)
Auxiliary UV Auxiliary undervoltage (27X)
Volts per Hertz Volts per Hertz (24). Enhanced models only.
Ground OV Ground Overvoltage (59G)
Directional Power Directional power (32), in primary values.
Pwr Factor Limiting Power Factor Limiting (55). Enhanced models only.
G650 Generator Protection & Control System GEK-113285A