Basler Electric BE1-11t - Manual (Page 109)

9424200995 Rev H 97
Figure 64. Phase Current Differential Operation Chart
Table 35. Operational Settings
Setting Range Increment
Unit of
Measure
Default
87 Mode Disabled or Percent Differential n/a n/a Disabled
Slope Mode Maximum or Average n/a n/a Maximum
Minimum
Restrained Pickup
0 or 0.1 to 1 0.01 n/a 0
Restraint Slope 1 5 to 100 1 percent 45
Time Delay 0 to 60,000 varies milliseconds 0
CT Circuit 1 Tap
Set on the System Parameters,
Transformers Setup screen
n/a n/a n/a
CT Circuit 2 Tap
Set on the System Parameters,
Transformers Setup screen
n/a n/a n/a
2 nd Slope Pickup 0 or 0.1 to 20 0.01 n/a 0
Restraint Slope 2 15 to 140 1 percent 45
Slope Alarm 0 or 50 to 100 1 percent 0
Unrestrained
Tripping Mode
Enabled or Disabled n/a n/a Disabled
Unrestrained
Tripping Pickup
0 to 21 1 n/a 0
Harmonics Mode Independent or Shared n/a n/a Independent
2 nd Harmonic 0 or 5 to 75 1 percent 0
5 th Harmonic 0 or 5 to 75 1 percent 0
BE1-11t 0BPhase Current Differential (87) Protection