GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual page 117

5 SETPOINTS
c) NEGATIVE SEQUENCE INSTANTANEOUS OVERCURRENT
PATH: SETPOINTS S4 ELEMENTS
W1 NEG SEQ INST OC
[ENTER] for more
• W1(3) NEG SEQ INST OC PICKUP: Enter the level of negative sequence current (in units of relay nominal current)
above which the Winding 1(3) Negative Sequence Instantaneous Overcurrent element will pickup and start the delay
timer.
• W1(3) NEG SEQ INST OC DELAY: Enter the time that the negative sequence current must remain above the pickup
level before the element operates.
GE Multilin
Courtesy of NationalSwitchgear.com
NEG SEQ OC W1(3) NEG SEQ INST OC
ð
W1 NEG SEQ INST OC
ENTER
FUNCTION: Disabled
ESCAPE
W1 NEG SEQ INST OC
ESCAPE
TARGET: Latched
MESSAGE
W1 NEG SEQ INST OC
ESCAPE
PICKUP: 10.00 x CT
MESSAGE
W1 NEG SEQ INST OC
ESCAPE
DELAY: 0 ms
MESSAGE
W1 NEG SEQ INST OC
ESCAPE
BLOCK: Disabled
MESSAGE
Figure 5–28: NEGATIVE SEQUENCE IOC SCHEME LOGIC
745 Transformer Management Relay
5.6 S4 ELEMENTS
Range: Enabled, Disabled
Range: Self-Reset, Latched, None
Range: 0.05 to 20.00 x CT in steps of 0.01
Range: 0 to 60000 ms in steps of 1
Range: Logc Inpt 1 to 16, Virt Inpt 1 to 16, Output Rly 2 to
8, SelfTest Rly, Vir Outpt 1 to 5, Disabled
5
5-67