9424200994 Rev U
Name
Logic Function
Pickup
Operational Settings
Auxiliary undervoltage element operational settings are configured on the Undervoltage (27X) settings
screen (Figure 49) in BESTCOMSPlus. Setting ranges and defaults are summarized in Table 20.
Setting
Mode*
Pickup
Inhibit Level
Timing Mode
Time Delay (Definite
Timing)
Time Dial (Inverse
Timing)
Curve
BE1-11g
Output
True when the 27X element is in a pickup condition
Figure 49. Auxiliary Undervoltage Settings Screen
Table 20. Operational Settings
Range
Disabled,
3V0, V1, V2,
Vx Fundamental,
Vx Third Harmonic
0 or 1 to 150 secondary
0 or 1 to 150 secondary
Definite or Inverse
50 to 600,000
0 to 9.9
P, T1, T2, T3, or T4
Purpose
Unit of
Increment
Measure
n/a
n/a
0.1
volts
0.1
volts
n/a
n/a
varies
milliseconds
0.1
units
n/a
n/a
Auxiliary Undervoltage (27X) Protection
67
Default
Disabled
0
0
Definite
50
0
P
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