GE L90

INDEX
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL v
Distance
actual values .......................................................................................6-27
FlexAnalogs ........................................................................................ A-28
ground ................................................................................................5-236
ground specifications .....................................................................2-32
logic diagram ...................................................................................5-226
Mho characteristic ........................................................................5-230
mho characteristic ........................................................................5-228
phase .......................................................................................2-31, 5-226
quad characteristic ........................................................ 5-229, 5-238
settings ...............................................................................................5-225
Disturbance detector
FlexLogic operands ........................................................ 5-190, 5-198
internal ................................................................................................5-140
logic diagram ...................................................................................5-317
settings ...............................................................................................5-315
DNP
connections remaining ..................................................................6-10
select protocol ...................................................................................5-52
settings ..................................................................................................5-53
DOS partition alarm error message ..........................................7-13
Downgrade firmware .....................................................................11-13
Downgrade software .....................................................................11-13
Download files .......................................................................................11-3
Drag and drop files ............................................................................... 4-3
DTT .................................................................................................................2-8
Duplicate device settings ................................................................11-7
Duplicate settings for upgrading ................................................11-5
DUTT
application of settings ....................................................................8-17
FlexLogic operands .......................................................................5-193
logic diagram ...................................................................................5-378
settings ...............................................................................................5-376
E
Electrostatic discharge specifications .....................................2-52
Elements .....................................................................................................5-4
End of life ...............................................................................................11-30
Energy metering
actual values .......................................................................................6-20
clearing ........................................................................................ 5-42, 7-2
specifications ......................................................................................2-43
EnerVista UR setup
command line interface ..................................................................C-1
drag and drop files ............................................................................. 4-3
event recorder ...................................................................................... 4-2
firmware upgrade or downgrade ..........................................11-13
installation ...........................................................................................3-51
oscillography ........................................................................................4-2
requirements ......................................................................................3-51
restart relay ........................................................................................... 5-1
Engineer
command to force user logoff ...................................................... 7-6
create logic diagram .......................................................................4-63
Error messages ..................................................................................4-71
Warning messages ..........................................................................4-72
Engineer toolbar ..................................................................................4-82
Enhanced front panel
FlexLogic ............................................................................................5-190
interface ...............................................................................................4-14
keypad ................................................................................................... 4-38
labels ......................................................................................................4-44
LEDs ..........................................................................................4-40, 5-124
navigation ............................................................................................ 4-51
order codes .........................................................................................2-11
pushbuttons .....................................................................................5-127
specifications .....................................................................................2-41
use, change setting .........................................................................4-53
Environment backup .........................................................................11-9
Equations
definite time curve ..........................................................5-261, 5-302
FlexCurves .........................................................................................5-261
FlexLogic ............................................................................................5-209
FlexLogic, protect ................................................................................4-9
IAC curves ..........................................................................................5-259
IEC curves ..........................................................................................5-257
IEEE curves ........................................................................................5-256
Equipment mismatch error ..............................................................7-8
Error messages .......................................................................................7-7
device not recognized ..................................................................11-13
in Engineer ...........................................................................................4-71
Ethernet
actual values .........................................................................................6-9
configuration ...................................................................................... 3-59
port settings .......................................................................................5-46
port, turn on or off ...........................................................................5-46
ports on rear panel .......................................................................... 3-11
Quick Connect ...................................................................................3-64
Event cause indicators .....................................................................4-40
Event Cause LEDs ............................................................................... 4-42
Event recorder
actual values ......................................................................................6-30
clearing ........................................................................................5-41, 7-2
records explained ...............................................................................4-2
specifications .....................................................................................2-42
System Integrity Recover events ..............................................5-26
system logs .........................................................................................5-26
via EnerVista software ......................................................................4-2
EVENTS setting .........................................................................................5-5
Export settings to file ........................................................................11-8
F
F485 ............................................................................................................3-50
Factory default reset ................................................................5-9, 5-23
Far-End Fault Indication ..................................................................5-47
Fast distance algorithm ................................................................10-26
Fast form-C relay specifications ................................................2-47
Fast transient testing specifications ........................................2-52
Fault locator
logic diagram ...................................................................................10-61
operation ............................................................................................10-59
Fault locator specifications ...........................................................2-42