GE F60 Instruction Manual page 312

5.6 GROUPED ELEMENTS
5
• WATTMETRIC GND FLT 1 MULTIPLIER: This setting is applicable if
to Inverse and defines the multiplier factor for the inverse time delay.
SETTINGS
WATTMETRIC GND FLT 1
SOURCE:
WATTMETRIC GND FLT 1
CURRENT:
Calculated: Measured:
Neutral, In Ground, Ig
WATTMETRIC GND FLT 1
VOLTAGE:
Calculated: Measured:
Neutral, Vn Auxiliary, Vx
SETTINGS
WATTMETRIC GND FLT
1 FUNCTION:
Enabled = 1
WATT GND FLT 1 BLK:
Off = 0
5-180
FORWARD FAULT
ECA = 180 to 270°
V
n
I
n
ECA = 180°
V
n
I
n
V
n
ECA = 90 to 180°
Figure 5–78: WATTMETRIC CHARACTERISTIC ANGLE RESPONSE
SETTINGS
WATTMETRIC GND FLT 1
PWR PICKUP:
WATTMETRIC GND FLT 1
SETTING
OC PICKUP:
WATTMETRIC GND FLT 1
WATTMETRIC GND FLT 1
ECA:
OV PICKUP:
S = V*conj (I*exp(-j*ECA))
> PWR PICKUP
S
OP
V > OV PICKUP
MAG
I > OC PICKUP
MAG
Figure 5–79: WATTMETRIC ZERO-SEQUENCE DIRECTIONAL LOGIC
F60 Feeder Protection System
REVERSE FAULT
ECA = 0 to 90°
V
n
I
n
ECA = 0°
V
n
I I
n n
I
n
V
n
ECA = 270 to 360°
837804A1.CDR
WATTMETRIC GND FLT 1 CURVE
SETTING
WATTMETRIC GND FLT 1
1 PWR PKP DEL:
t
PKP
0
SETTING
WATTMETRIC GND FLT 1
OC PKP DEL:
t
PKP
0
5 SETTINGS
above is selected
SETTINGS
WATTMETRIC GND FLT 1
CURVE:
WATTMETRIC GND FLT 1
REF PWR:
WATTMETRIC GND FLT 1
MULTIPLIER:
RUN
FLEXLOGIC OPERAND
= ×
WATTMETRIC 1 OP
FLEXLOGIC OPERAND
WATTMETRIC 1 PKP
837033A4.CDR
GE Multilin