GE Feeder Management Relay 750 User Manual

GE Multilin 750/760 Feeder Management Relay 5-39
5 SETPOINTS 5.6 S5 PROTECTION
5
Figure 5–8: PHASE IOC LOGIC
d) PHASE DIRECTIONAL OC
PATH: SETPOINTS ÖØ S5 PROTECTION Ö PHASE CURRENT ÖØ PHASE DIRECTIONAL
Directional overcurrent relaying is necessary for the protection of multiple source feeders, when it is essential to discrimi-
nate between faults in different directions. It would be impossible to obtain correct relay selectivity through the use of a non-
directional overcurrent relay in such cases. Fault directional control (ANSI device 67) is incorporated into the relay for all
phase, neutral, sensitive ground, and negative sequence overcurrent elements. If directional control is selected, it will
determine whether current flow in each phase is in the forward or reverse direction, as determined by the connection of the
 PHASE DIRECTIONAL
 [ENTER] for more
PHASE DIRECTIONAL
FUNCTION: Disabled
Range: Disabled, Alarm, Latched Alarm, Control
PHASE DIRECTIONAL
RELAYS (3-7): -----
Range: Any combination of 3 to 7 Auxiliary relays
PHASE DIRECTIONAL
MTA: 30° Lead
Range: 0 to 359° in steps of 1
MIN POLARIZING
VOLTAGE: 0.05 x VT
Range: 0.00 to 1.25 x VT in steps of 0.01
BLK OC WHEN VOLT MEM
EXPIRES: Disabled
Range: Disabled, Enabled
PHASE INST OC 1
DIRECTION: Disabled
Range: Disabled, Forward, Reverse
ENTER
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Courtesy of NationalSwitchgear.com

GE Feeder Management Relay 750 Specifications

General

Brand	GE
Model	Feeder Management Relay 750
Category	Protection Device
Language	English