Non-Volatile Latches - GE F60 Instruction Manual

FLEXLOGIC
Unit
FAULT LOCATION
FREQUENCY
FREQUENCY RATE OF CHANGE
PHASE ANGLE
POWER FACTOR
RTDs
SENSITIVE DIR POWER
(Sns Dir Power)
SOURCE CURRENT
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
SOURCE POWER
SOURCE THD & HARMONICS
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
FLEXELEMENT 1 HYSTERESIS
hysteresis loop as a percentage of the pickup value as shown in the FlexElement Direction, Pickup, and Hysteresis diagram.
FLEXELEMENT 1 dt UNIT
FLEXELEMENT 1 COMP MODE
5
— Specifies duration of the time interval for the rate of change mode of operation. This setting is
FLEXELEMENT 1 dt
applicable only if
FLEXELEMENT 1 COMP MODE
FLEXELEMENT 1 PKP DELAY
FLEXELEMENT 1 RST DELAY

5.6.8 Non-volatile latches

SETTINGS  FLEXLOGIC  NON-VOLATILE LATCHES  LATCH 1(16)
 LATCH 1

The non-volatile latches provide a permanent logical flag that is stored safely and do not reset upon restart after the relay
is powered down. Typical applications include sustaining operator commands or permanently blocking relay functions,
such as Autorecloser, until a deliberate interface action resets the latch.
— This setting characterizes Latch 1 to be Set- or Reset-dominant.
LATCH 1 TYPE
5-212
Description
BASE = Line Length as specified in Fault Report
f = 1 Hz
BASE
df/dt = 1 Hz/s
BASE
ϕ = 360 degrees (see the UR angle referencing convention)
BASE
PF = 1.00
BASE
BASE = 100°C
P = maximum value of 3 × V
BAS
E
for the sensitive power directional element(s).
I = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
E = 10000 MWh or MVAh, respectively
BAS
E
P = maximum value of V
BASE
BASE = 1%
V = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
V = maximum primary RMS value of all the sources related to the +IN and –IN inputs
BASE
— This setting defines the pickup–dropout relation of the element by specifying the width of the
— Specifies the time unit for the setting
is set to "Delta."
is set to "Delta."
— Specifies the pickup delay of the element.
— Specifies the reset delay of the element.
LATCH 1

FUNCTION: Disabled
LATCH 1 ID:

NV Latch 1
LATCH 1 TYPE:

Reset Dominant
LATCH 1 SET:

Off
LATCH 1 RESET:

Off
LATCH 1

TARGET: Self-reset
LATCH 1

EVENTS: Disabled
× I for the +IN and –IN inputs of the sources configured
BASE BASE
× I for the +IN and –IN inputs
BASE BASE
. This setting is applicable only if
FLEXELEMENT 1 dt
Range: Disabled, Enabled
Range: up to 20 alphanumeric characters
Range: Reset Dominant, Set Dominant
Range: FlexLogic operand
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
F60 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS