426
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
PROTECTION FLEXANALOG™ PARAMETERS
CHAPTER 7: PROTECTION
Setting group operands
SETTING GROUP ACT 1............................Asserted when setting group 1 is active.
SETTING GROUP ACT 2............................Asserted when setting group 2 is active.
SETTING GROUP ACT 3............................Asserted when setting group 3 is active.
SETTING GROUP ACT 4............................Asserted when setting group 4 is active.
SETTING GROUP ACT 5............................Asserted when setting group 5 is active.
SETTING GROUP ACT 6............................Asserted when setting group 6 is active.
Disturbance detector operands
SRC1 50DD OP ............................................Asserted when the disturbance detector for source 1 operates.
SRC2 50DD OP ............................................Asserted when the disturbance detector for source 2 operates.
SRC3 50DD OP ............................................Asserted when the disturbance detector for source 3 operates.
Voltage transformer fuse failure (VTFF) operands
SRC1 VTFF DPO...........................................Asserted when the VT fuse failure detector for source 1 drops
out.
SRC1 VTFF OP..............................................Asserted when the VT fuse failure detector for source 1
operates.
SRC1 VTFF VOL LOSS................................Asserted when the VT fuse failure detector for source 1 loses
voltage signals (
V
2
is less than 15% and
V
1
is less than 5% of
nominal).
SRC2 to SRC3...
............................................The set of operands shown above are available VT fuse failure
elements for sources 2 through 3.
Trip output operands
TRIP 1-POLE..................................................Asserted when a single-pole trip-and-reclose operation is
initiated.
TRIP 3-POLE..................................................Asserted upon a trip for all three breaker poles.
TRIP AR INIT 3-POLE..................................Asserted when a three-pole reclose is initiated.
TRIP FORCE 3-POLE ..................................Asserted when a three-pole trip must be initiated.
TRIP PHASE A ...............................................Asserted upon a breaker pole A trip, initiate phase A breaker fail
and reclose.
TRIP PHASE B ...............................................Asserted upon a breaker pole B trip, initiate phase A breaker fail
and reclose.
TRIP PHASE C...............................................Asserted upon a breaker pole C trip, initiate phase A breaker fail
and reclose.
Protection FlexAnalog™ parameters
The following protection FlexAnalog™ parameters (analog operands) are available for the
D90
Plus
. They are listed alphabetically by operand syntax The definitions listed below
reflect the programmed source and element names, where applicable.
Setting group analog operand
Active Setting Group ................................The currently active setting group
Digital counter analog operands
Digital Counter 1 Value...........................Actual value of digital counter 1
Digital Counter 2 Value...........................Actual value of digital counter 2
Digital Counter 3 Value...........................Actual value of digital counter 3
Digital Counter 4 Value...........................Actual value of digital counter 4
Digital Counter 5 Value...........................Actual value of digital counter 5
