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F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
FLEXLOGIC
CHAPTER 5: SETTINGS
5
FLEXELEMENT 1 HYSTERESIS
— This setting defines the pickup–dropout relation of the element by specifying the width of the
hysteresis loop as a percentage of the pickup value as shown in the FlexElement Direction, Pickup, and Hysteresis diagram.
FLEXELEMENT 1 dt UNIT
— Specifies the time unit for the setting
FLEXELEMENT 1 dt
. This setting is applicable only if
FLEXELEMENT 1 COMP MODE
is set to “Delta.”
FLEXELEMENT 1 dt
— Specifies duration of the time interval for the rate of change mode of operation. This setting is
applicable only if
FLEXELEMENT 1 COMP MODE
is set to “Delta.”
FLEXELEMENT 1 PKP DELAY
— Specifies the pickup delay of the element.
FLEXELEMENT 1 RST DELAY
— Specifies the reset delay of the element.
5.6.8 Non-volatile latches
SETTINGS
FLEXLOGIC
NON-VOLATILE LATCHES
LATCH 1(16)
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.
LATCH 1 TYPE
— This setting characterizes Latch 1 to be Set- or Reset-dominant.
LATCH 1 SET
— If asserted, the specified FlexLogic operands 'sets' Latch 1.
LATCH 1 RESET
— If asserted, the specified FlexLogic operand 'resets' Latch 1.
FAULT LOCATION
BASE = Line Length as specified in Fault Report
FREQUENCY
f
BASE
= 1 Hz
PHASE ANGLE
ϕ
BASE
= 360 degrees (see the UR angle referencing convention)
POWER FACTOR
PF
BASE
= 1.00
RTDs
BASE = 100°C
SOURCE CURRENT
I
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
E
BAS
E
= 10000 MWh or MVAh, respectively
SOURCE POWER
P
BASE
= maximum value of V
BASE
×
I
BASE
for the +IN and –IN inputs
SOURCE THD & HARMONICS
BASE = 1%
SOURCE VOLTAGE
V
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
LATCH 1
LATCH 1
FUNCTION: Disabled
Range: Disabled, Enabled
LATCH 1 ID:
NV Latch 1
Range: up to 20 alphanumeric characters
LATCH 1 TYPE:
Reset Dominant
Range: Reset Dominant, Set Dominant
LATCH 1 SET:
Off
Range: FlexLogic operand
LATCH 1 RESET:
Off
Range: FlexLogic operand
LATCH 1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
LATCH 1
EVENTS: Disabled
Range: Disabled, Enabled
Unit
Description