GE F650 Instruction Manual page 91

4.1 ENERVISTA 650 SETUP SOFTWARE INTERFACE 4 HUMAN INTERFACES. SETTINGS & ACTUAL VALUES
4.1.8.3 PROTECTION ELEMENTS
This option shows all the protection-grouped elements available in the relay as shown in Table 4.9:. Each of these groups
includes the specific protection units of the same type. For example phase currents group includes TOC, IOC, directional
units, etc. There are three groups available, so there are three protection units of each function that can work in grouped
mode or ungrouped (altogether).
Table 4.9: GENERAL OVERVIEW OF PROTECTION ELEMENTS MENU:
PROTECTION
ELEMENTS
4
Options enabled only in On-line mode are marked as (*). Options enabled only in Off-line mode are marked as (**)
Table 4.10: PROTECTION ELEMENTS INCLUDED
PHASE
CURRENT
NEUTRAL
CURRENT
GROUND
CURRENT
SENSITIVE
GROUND
CURRENT
4-18
Phase Current All overcurrent grouped functions for phase current.
All overcurrent grouped functions for neutral current. (Calculated from
Neutral Current
phases, not measured)
All overcurrent grouped functions for ground current. (Measured from 4
Ground Current
current input)
All overcurrent grouped functions for sensitive ground current.
Sensitive Ground
Current
(Measured from 5
Negative Sequence
All Negative sequence overcurrent grouped functions.
Current
All voltage grouped functions for phases, neutral, ground and auxiliary
Voltage Elements
voltage
Forward power, directional power and wattmetric ground fault (High and
Power
Low) grouped protection functions.
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)
Phase IOC Low Phase instantaneous overcurrent, low level (50PL)
Phase Directional Phase directional unit (67P). Quadrature Voltage for polarization
Thermal Model Thermal model or Thermal image unit for phases (49)
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.
Sensitive Ground TOC Sensitive ground time overcurrent (51SG).
Sensitive Ground IOC Sensitive ground instantaneous overcurrent (50SG).
Isolated Ground IOC Isolated ground overcurrent (50IG)
F650 Digital Bay Controller
th
current input)
th
GEK-106310AB