GE Multilin G650 - Page 99

4-24 G650 Generator Protection & Control System GEK-113285A
4.1 ENERVISTA 650 SETUP SOFTWARE INTERFACE 4 HUMAN INTERFACES. SETTINGS & ACTUAL VALUES
4
Table 4–17: ACTUAL VALUES INCLUDED IN THE PROTECTION MENU
Table 4–18: DIFFERENT CONTROL ACTUAL VALUES INCLUDED IN THE CONTROL ELEMENTS MENU
PROTECTION
Protection Blocks This screen shows all the protection element blocks available. Protection
elements block signals can be configured at “Setpoint>Relay
Configuration > Protection Elements”.
Phase Current Protection status signals (pickups and operations) for time overcurrent,
instantaneous overcurrent and directional protection functions for phase
current.
Neutral Current Protection status signals (pickups and operations) for time overcurrent,
instantaneous overcurrent and directional protection functions for neutral
current (calculated from phases).
Ground Current Protection status signals (pickups and operations) for time overcurrent,
instantaneous overcurrent and directional protection functions for ground
current (measured from 4
th
current input).
Sensitive Ground
Current
Protection status signals (pickups and operations) for time overcurrent,
instantaneous overcurrent, isolated and directional protection functions
for ground current (measured from 5
th
current input).
Negative Sequence
Current
Protection status signals (pickups and operations) for negative sequence
time overcurrent function.
Voltage Protection status signals (pickups and operations) for all voltage
functions, undervoltage, overvoltage, neutral overvoltage, negative
sequence overvoltage and auxiliary under and over voltage, Volts/Hz and
ground overvoltage.
Power Protection status signals (pickups and operations) for all power units .
CONTROL
ELEMENTS
Frequency Status signals (pickups and operations) for under, overfrequency and
frequency rate of change units.
Synchrocheck Status signals for synchrocheck function (25).
Breaker Failure Status signals for breaker failure function (50BF). Enhanced models only.
VT Fuse Failure Fuse failure detection signal. Enhanced models only.
Setting Groups Status signals (activations and blocks) for the relay setting group change.
By default the “setting group” setting is disabled and all the grouped
elements can be enabled at the same time.
Pulse Counters Status signals for pulse counters units.
Analog Comparator Status signals for analog comparator units.
Loss of Mains
Status signals (operations) for loss of mains (78V).
Enhanced models
only.
Loss of excitation Status signals (pickups and operations) for loss of excitation (40).
Accidental
Energization
Status signals (off-line, armed and operation) for inadvertent generator
energization (50/27).