14-18 BE1-951 BESTCOMS Software 9328900990 Rev L
59X/159X (Auxiliary Overvoltage)
This tab (
Figure 14-23) is the Auxiliary Overvoltage with Settable Time Delay. Changing the settings for
this element is similar to that of the previous 27P element.
Figure 14-23. Voltage Protection Screen, 59X/159X Tab
INH/81/181 and 281/381/481/581
These two tabs allow configuring the Over/Underfrequency with Settable Time Delay elements. The
INH/81/181 tab is illustrated in
Figure 14-24. The 281/381/481/581 tab functions in a similar manner.
Changing the settings for these elements is identical or similar to those settings of the previous 27P
element. Inhibit can be set in the range of 15.0 to 150 volts. Pickup Hertz can be set in the range of 40 to
70. And Time (ms) can be set from 0 to 600,000 milliseconds. The 81 elements can be set for
overfrequency or underfrequency using the pull-down menus.
Figure 14-24. Voltage Protection Screen, INH/81/181/281/381/481/581 Tab
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