4-18 F650 Digital Bay Controller GEK-106310AB
4.1 ENERVISTA 650 SETUP SOFTWARE INTERFACE 4 HUMAN INTERFACES. SETTINGS & ACTUAL VALUES
4
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:
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
PROTECTION
ELEMENTS
Phase Current All overcurrent grouped functions for phase current.
Neutral Current
All overcurrent grouped functions for neutral current. (Calculated from
phases, not measured)
Ground Current
All overcurrent grouped functions for ground current. (Measured from 4
th
current input)
Sensitive Ground
Current
All overcurrent grouped functions for sensitive ground current.
(Measured from 5
th
current input)
Negative Sequence
Current
All Negative sequence
overcurrent grouped functions.
Voltage Elements
All voltage grouped functions for phases, neutral, ground and auxiliary
voltage
Power
Forward power, directional power and wattmetric ground fault (High and
Low) grouped protection functions.
PHASE
CURRENT
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
CURRENT
Neutral TOC Neutral time overcurrent (51N)
Neutral IOC Neutral instantaneous overcurrent (50N)
Neutral Directional Neutral directional unit (67N). Voltage, current and dual polarization.
GROUND
CURRENT
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
CURRENT
Sensitive Ground TOC Sensitive ground time overcurrent (51SG).
Sensitive Ground IOC Sensitive ground instantaneous overcurrent (50SG).
Isolated Ground IOC Isolated ground overcurrent (50IG)
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