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5.6 S4 ELEMENTS
UNDERFREQUENCY 1
DELAY: 1.00 s
UNDERFREQUENCY 1
BLOCK: Disabled
b) FREQUENCY DECAY
S FREQUENCY DECAY
S [ENTER] for more
FREQUENCY DECAY
FUNCTION: Disabled
FREQUENCY DECAY
TARGET: Latched
CURRENT SENSING:
Enabled
5
MINIMUM OPERATING
CURRENT: 0.20 x CT
MINIMUM OPERATING
VOLTAGE: 0.50 x VT
FREQUENCY DECAY
THRESHOLD: 59.50 Hz
FREQUENCY DECAY
DELAY:
0.00 s
FREQUENCY DECAY
RATE 1: 0.4 Hz/s
FREQUENCY DECAY
RATE 2: 1.0 Hz/s
FREQUENCY DECAY
RATE 3: 2.0 Hz/s
FREQUENCY DECAY
RATE 4: 4.0 Hz/s
FREQUENCY DECAY
BLOCK: Disabled
5-66
Range: 0.00 to 600.00 (steps of 0.05)
Enter the time the frequency must remain below the pickup level before the
element operates.
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 FREQUENCY DECAY section. To
continue these setpoints press
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: Disabled / Enabled
Range: 0.20 to 1.00 (steps of 0.01)
Enter the minimum value of Winding 1 phase A current (in units of relay
nominal current) required to allow the frequency decay element to operate.
Range: 0.10 to 0.99 (steps of 0.01)
Enter the minimum value of voltage (in units of relay nominal voltage)
required to allow the underfrequency element to operate.
Range: 45.00 to 59.99 (steps of 0.01)
Enter the frequency (in Hz) below which the four frequency rate-of-change
levels of the frequency decay element will be allowed to operate.
Range: 0.00 to 600.00 (steps of 0.01)
Range: 0.1 to 5.0 (steps of 0.1)
Enter the rate of frequency decay beyond which the rate 1 element operates.
Range: 0.1 to 5.0 (steps of 0.1)
Enter the rate of frequency decay beyond which the rate 2 element operates.
Range: 0.1 to 5.0 (steps of 0.1)
Enter the rate of frequency decay beyond which the rate 3 element operates.
Range: 0.1 to 5.0 (steps of 0.1)
Enter the rate of frequency decay beyond which the rate 4 element operates.
Range: Disabled / Logc Inpt 1 (2-16) /Virt Inpt 1 (2-16) / Output Rly 1 (2-8) /
SelfTest Rly / Virt Outpt 1 (2-5)
745 Transformer Management Relay
or press
for the next section.
E N TE R
M E SS AG E
GE Power Management
5 SETPOINTS
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