Bus Differential - GE B30 Instruction Manual

5 SETTINGS

PATH: SETTINGS GROUPED ELEMENTS
 BUS ZONE 1
 DIFFERENTIAL
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
Two zones of bus differential protection are provided. The operation of these elements is completely dependent on the
dynamic bus replica, which must be defined first. Both biased and unbiased bus differential protection functions are pro-
vided for the bus differential zone.
The biased bus differential function has a dual-slope operating characteristic (see figure below) operating in conjunction
with saturation detection and a directional comparison principle (see the Bus zone 1 differential scheme logic figure in this
section).
GE Multilin
 
SETTING GROUP 1(6)

BUS DIFFERENTIAL

BUS ZONE 1 DIFF
FUNCTION: Disabled
BUS ZONE 1 DIFF
PICKUP: 0.100 pu
BUS ZONE 1 DIFF
LOW SLOPE: 25%
BUS ZONE 1 DIFF
LOW BPNT: 2.00 pu
BUS ZONE 1 DIFF
HIGH SLOPE: 60%
BUS ZONE 1 DIFF
HIGH BPNT: 8.00 pu
BUS ZONE 1 DIFF
HIGH SET: 15.00 pu
BUS ZONE 1 DIFF
SEAL-IN: 0.400 s
BUS ZONE 1 DIFF BLK:
Off
BUS ZONE 1 DIFF
TARGET: Latched
BUS ZONE 1 DIFF
EVENTS: Disabled
B30 Bus Differential System
5.6 GROUPED ELEMENTS
5.6.3 BUS DIFFERENTIAL

BUS ZONE 1(2) DIFFERENTIAL
Range: Disabled, Enabled
Range: 0.050 to 6.000 pu in steps of 0.001
Range: 15 to 100% in steps of 1
Range: 1.00 to 30.00 pu in steps of 0.01
Range: 50 to 100% in steps of 1
Range: 1.00 to 30.00 pu in steps of 0.01
Range: 0.10 to 99.99 pu in steps of 0.01
Range: 0.000 to 65.535 s in steps of 0.001
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5
5-139