GE L30 Instruction Manual page 418

FLEXLOGIC
A FlexElement is a universal comparator used to monitor any analog actual value calculated by the relay or a net
difference of any two analog actual values of the same type. The effective operating signal can be treated as a signed
number or its absolute value can be used.
FlexElements run every half power cycle (every four protection passes).
5
The element can be programmed to respond either to a signal level or to a rate-of-change (delta) over a pre-defined period
of time. The output operand is asserted when the operating signal is higher than a threshold or lower than a threshold, as
per your choice.
FLEXELEMENT 1 +IN
this setting is set to "Off." For proper operation of the element, at least one input must be selected. Otherwise, the element
does not assert its output operands.
5-204
FLEXELEMENT 1

PICKUP: 1.000 pu
FLEXELEMENT 1

HYSTERESIS: 3.0%
FLEXELEMENT 1 dt

UNIT: Milliseconds
FLEXELEMENT 1 dt:

20
FLEXELEMENT 1 PKP

DELAY: 0.000 s
FLEXELEMENT 1 RST

DELAY: 0.000 s
FLEXELEMENT 1 BLK:

Off
FLEXELEMENT 1

TARGET: Self-reset
FLEXELEMENT 1

EVENTS: Disabled
Figure 5-103: FlexElement logic
— This setting specifies the first (non-inverted) input to the FlexElement. Zero is assumed as the input if
Range: –90.000 to 90.000 pu in steps of 0.001
Range: 0.1 to 50.0% in steps of 0.1
Range: Milliseconds, Seconds, Minutes
Range: 20 to 86400 in steps of 1
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: FlexLogic operand
Range: Self-reset, Disabled, Latched
Range: Disabled, Enabled
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS