GE t60 Instruction Manual page 299

5 SETTINGS
e) PHASE DIRECTIONAL OVERCURRENT (ANSI 67P)
PATH: SETTINGS GROUPED ELEMENTS
PHASE
DIRECTIONAL 1
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
Phase directional target messages not used with the current version of the T60 relay. As a result, the target
settings are not applicable for the phase directional element.
NOTE
The phase directional elements (one for each of phases A, B, and C) determine the phase current flow direction for steady
state and fault conditions and can be used to control the operation of the phase overcurrent elements via the
of these elements.
Phasors for Phase A Polarization:
VPol = VBC
IA = operating current
ECA = Element Characteristic Angle at 30°
GE Multilin
SETTING GROUP 1(6)
PHASE DIR 1
FUNCTION: Disabled
PHASE DIR 1 SIGNAL
SOURCE: SRC 1
PHASE DIR 1 BLOCK:
Off
PHASE DIR 1
ECA: 30
PHASE DIR POL V1
THRESHOLD: 0.700 pu
PHASE DIR 1 BLOCK
WHEN V MEM EXP: No
PHASE DIR 1
TARGET: Self-reset
PHASE DIR 1
EVENTS: Disabled
VAG (Unfaulted)
VAG(Faulted)
VBC
VCG
×
(1/_ECA) = polarizing voltage
Figure 5–90: PHASE A DIRECTIONAL POLARIZATION
T60 Transformer Protection System
5.6 GROUPED ELEMENTS
PHASE CURRENT PHASE DIRECTIONAL 1
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
Range: FlexLogic™ operand
Range: 0 to 359° in steps of 1
Range: 0.000 to 3.000 pu in steps of 0.001
Range: No, Yes
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
–90°
Fault angle
set at 60° Lag
VPol
IA
ECA
set at 30°
VBC
VBG
+90°
827800A2.CDR
5
inputs
BLOCK
5-167