9252000898 Rev —
BE1-50/51B-235/-236 General Information
1-3
Instantaneous Overcurrent A (50-A) Element
BE1-50/51B-235 Pickup
Setting Range:
2 to 99 Aac
Setting increment:
1 Aac
Accuracy: Sum
of
±
2% and
±
25 mAac
BE1-50/51B-236 Pickup
Setting Range:
0.4 to 19.8 Aac
Setting increment:
0.2 Aac
Accuracy: Sum
of
±
2% and
±
5 mAac
Dropout
Dropout occurs at 95% of pickup value.
Time Delay
Switch selectable—no intentional delay (SW3-2 OFF) or a fixed delay of 100 ms (SW3-2 ON). Appendix
A,
Characteristic Curves
illustrates the characteristic curve for the 50-A and 50-B elements.
Instantaneous Overcurrent B (50-B) Element
BE1-50/51B-235 Pickup
Setting Range:
1 to 15.9 Aac
Setting increment:
0.1 Aac
Accuracy: Sum
of
±
2% and
±
25 mAac
BE1-50/51B-236 Pickup
Setting Range:
0.2 to 3.18 Aac
Setting increment:
0.02 Aac
Accuracy: Sum
of
±
2% and
±
5 mAac
Dropout
Dropout occurs at 95% of pickup value.
Time Delay
Fixed at no intentional delay. Appendix A,
Characteristic Curves
illustrates the characteristic curve for the
50-A and 50-B elements.
Reset Characteristic
Resets within 16 ms of when sensed current decreases below the pickup level.
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