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5.6 S4 ELEMENTS
This section contains the settings to configure the total harmonic distortion monitoring elements. Included are a
THD level element for each winding and each phase.
S HARMONICS
S [ENTER] for more
a) WINDING 1 (2/3) THD LEVEL
S W1 THD LEVEL
S [ENTER] for more
W1 THD LEVEL
FUNCTION: Disabled
W1 THD LEVEL
TARGET: Self-reset
MINIMUM OPERATING
CURRENT: 0.10 x CT
5
W1 THD LEVEL
PICKUP: 50.0% ƒο
W1 THD LEVEL
DELAY: 10 s
W1 THD LEVEL
BLOCK: Disabled
5-70
This message indicates the start of the THD LEVEL section. To continue these
setpoints press
or press
EN TE R
This message indicates the start of the W1 (2/3) THD level 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: 0.03 to 1.00 (steps of 0.01)
Enter the minimum value of current (in units of relay nominal current)
required to allow the THD level element to operate.
Range: 0.1 to 50.0 (steps of 0.1)
Enter the total harmonic distortion (in %ƒ
level will pickup and start the delay timer.
Range: 0 to 60000 (steps of 1)
Enter the time that the total harmonic distortion must remain above 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)
745 Transformer Management Relay
5.6.13 HARMONICS
for the next section.
M E SS AG E
or press
for the next section.
E N TE R
M E SS AG E
) above which the W1 (2/3) THD
0
GE Power Management
5 SETPOINTS
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