GE 745 TRANSFORMER MANAGEMENT RELAY User Manual

5-56 745 Transformer Management Relay GE Power Management
5.6 S4 ELEMENTS 5 SETPOINTS
5
b) WINDING 1 (2/3) NEUTRAL INSTANTANEOUS OVERCURRENT 1
c) WINDING 1 (2/3) NEUTRAL INSTANTANEOUS OVERCURRENT 2
The messages that follow are identical to those described for NEUTRAL INSTANTANEOUS
OVERCURRENT 1.
y W1 NTRL INST OC 1
y
[ENTER] for more
This message indicates the start of the section describing the characteristics
of the first level of
NEUTRAL INSTANTANEOUS OVERCURRENT
protection for
Winding 1 (2/3). To continue with these setpoints press , or press
to go to the next section.
W1 NEUTRAL INST OC 1
FUNCTION: Enabled
Range: Disabled / Enabled
W1 NEUTRAL INST OC 1
TARGET: Latched
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
will never disable the
LED self-test feature because can not generate a displayable target
message.
W1 NEUTRAL INST OC 1
PICKUP: 10.00 x CT
Range: 0.05 to 20.00 (steps of 0.01)
Enter the level of neutral current (in units of relay nominal current) above
which the W1 (2/3) neutral instantaneous overcurrent 1 element will pickup
and start the delay timer.
W1 NEUTRAL INST OC 1
DELAY: 0 ms
Range: 0 to 60000 (steps of 1)
Enter the time that the neutral current must remain above the pickup level
before the element operates.
W1 NEUTRAL INST OC 1
BLOCK: Disabled
Range: Disabled / Logc Inpt 1 (2-16) /Virt Inpt 1 (2-16) / Output Rly 1 (2-8) /
SelfTest Rly / Virt Outpt 1 (2-5)
y W1 NTRL INST OC 2
y
[ENTER] for more
This message indicates the start of the section describing the characteristics
of the second level of
NEUTRAL INSTANTANEOUS OVERCURRENT
protection for
Winding 1 (2/3). To continue with these setpoints press , or press
to go to the next section.
ENTER
MESSAGE
ENTER
MESSAGE
NOTE

GE 745 TRANSFORMER MANAGEMENT RELAY Specifications

General

Brand	GE
Model	745 TRANSFORMER MANAGEMENT RELAY
Category	Relays
Language	English