Non-Volatile Latches - GE L60 Instructions Manual
Line phase comparison system
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Also See for L60:
- Instruction manual (736 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (498 pages)
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FLEXLOGIC
Unit
FAULT LOCATION
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE POWER
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
Z
BASE
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
5.5.8 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
5-190
Description
BASE = Line Length as specified in Fault Report
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
P
= maximum value of V
BASE
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
Z
= PhaseVTSecondary / PhaseCTSecondary, where PhaseVTSecondary and
BASE
PhaseCTSecondary are the secondary nominal voltage and the secondary nominal current of the
distance source. In case multiple CT inputs are summed as one source current and mapped as the
distance source, use the PhaseCTSecondary value from the CT with the highest primary nominal
current.
Distance source is specified in setting under SETTINGS GROUPED ELEMENTS SETTING
GROUP 1(6) DISTANCE.
PhaseVTSecondary and PhaseCTSecondary are specified in setting under SETTINGS SYSTEM
SETUP AC INPUTS.
— 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
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
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