Non-Volatile Latches - GE L30 Instruction Manual

CHAPTER 5: SETTINGS
Unit
BREAKER ACC ARCING AMPS
(Brk X Acc Arc Amp A, B, and C)
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
DCmA
DELTA TIME
FAULT LOCATION
FREQUENCY
FREQUENCY RATE OF CHANGE
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE POWER
SOURCE THD & HARMONICS
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
— This setting defines the pickup–dropout relation of the element by specifying the width of the
FLEXELEMENT 1 HYSTERESIS
hysteresis loop as a percentage of the pickup value as shown in the FlexElement Direction, Pickup, and Hysteresis diagram.
— Specifies the time unit for the setting
FLEXELEMENT 1 dt UNIT
is set to "Delta."
FLEXELEMENT 1 COMP MODE
— 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
— Specifies the pickup delay of the element.
FLEXELEMENT 1 PKP DELAY
— Specifies the reset delay of the element.
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.
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
Description
2
BASE = 2000 kA × cycle
2
BASE = 1 kA × cycle
BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs
BASE = 1 µs
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
I = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
P = maximum value of V
BASE 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
FLEXELEMENT 1 dt
is set to "Delta."
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
BASE
. This setting is applicable only if
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
FLEXLOGIC
5
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