Instantaneous Differential; Phase Overcurrent; Winding 1 (2/3) Phase Time Overcurrent - GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual

5.6 S4 ELEMENTS
This section contains the settings to configure the (unrestrained) instantaneous differential element, for protec-
tion under high magnitude internal faults.
S INST DIFFERENTIAL
S [ENTER] for more
INST DIFFERENTIAL
FUNCTION: Enabled
INST DIFFERENTIAL
TARGET: Latched
INST DIFFERENTIAL
PICKUP: 8.00 x CT
INST DIFFERENTIAL
BLOCK: Disabled
5
This section contains settings to configure the phase overcurrent elements. Included are phase time overcur-
rents and two levels of phase instantaneous overcurrent for each phase of each winding.
S PHASE OC
S [ENTER] for more
a) WINDING 1 (2/3) PHASE TIME OVERCURRENT
S W1 PHASE TIME OC
S [ENTER] for more
W1 PHASE TIME OC
FUNCTION: Enabled
W1 PHASE TIME OC
TARGET: Latched
W1 PHASE TIME OC
PICKUP: 1.20 x CT
5-52
This message indicates the start of the INSTANTANEOUS DIFFERENTIAL section.
To continue with these setpoints press
next section.
Range: Disabled / Enabled
Range: Self-reset / Latched / None
Select "None" to inhibit the display of the target message when the element
operates. Thus an element whose "target type" is "None" never disables the
LED self-test feature since it cannot generate a displayable target message.
Range: 3.00 to 20.00 (steps of 0.01)
Enter the level of differential current (in units of relay nominal current) above
which the instantaneous differential element will pickup and operate.
Range: Disabled / Logc Inpt 1 (2-16) /Virt Inpt 1 (2-16) / Output Rly 1 (2-8) /
SelfTest Rly / Virt Outpt 1 (2-5)
This message indicates the start of the PHASE OVERCURRENT section. To
continue with these setpoints press
next section.
This message indicates the start of the PHASE TIME OVERCURRENT section for
Winding 1 (2/3). To continue with these setpoints press
to go to the next section.
M E SSA G E
Range: Disabled / Enabled
Range: Self-reset / Latched / None
Select None to inhibit the display of the target message when the element
operates. Thus an element whose "target type" is None never disables the
LED self-test feature since it cannot generate a displayable target message.
Range: 0.05 to 20.00 (steps of 0.01)
Enter the phase current level (in units of relay nominal current) above which
the W1 (2/3) phase time overcurrent element will pickup and start timing.
745 Transformer Management Relay
5 SETPOINTS

5.6.5 INSTANTANEOUS DIFFERENTIAL

, or press
EN TE R M E SSA G E

5.6.6 PHASE OVERCURRENT

, or press
E N TE R
M E SSA G E
GE Power Management
to go to the
to go to the
, or press
E N TE R