Non-Volatile Latches - GE b30 Instruction Manual

FLEXLOGIC
Unit
BUS DIFFERENTIAL RESTRAINING
CURRENT
(Bus Rest Mag)
DCmA
DELTA TIME
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
SOURCE POWER
SOURCE VOLTAGE
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
— Specifies duration of the time interval for the rate of change mode of operation. This setting is
FLEXELEMENT 1 dt
applicable only if
5
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
— If asserted, the specified FlexLogic operands 'sets' Latch 1.
LATCH 1 SET
5-166
Description
I = maximum primary RMS value of the +IN and – IN inputs
BASE
(CT primary for source currents, and bus reference primary current for bus differential currents)
BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs
BASE = 1 µs
f = 1 Hz
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
E = 10000 MWh or MVAh, respectively
BAS
E
P = maximum value of V
BASE
V = maximum nominal primary RMS value of 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
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
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS