Basler Electric BE1-50/51B-240 - Manual (Page 11)

9252000790 Rev B 3
Reset
Integrating:
Simulates the disk reset of electromechanical relays and begins when
the current decreases below 95% of pickup. The Characteristic Curves
chapter illustrates the integrating reset characteristic curve and equation.
Instantaneous: Reset occurs within 16 ms of when the current decreases below 95% of
the pickup level.
Instantaneous Overcurrent (50) Element
Pickup
Setting Range:
2 to 99 Aac
Setting increment: 1 Aac
Accuracy: Sum of
±2% and ±25 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). The
Characteristic Curves chapter illustrates the characteristic curve for the 50 element.
Current Sensing Input
Continuous Rating: 14 Aac
∗
1 Second Rating: 400 Aac
∗ Continuous rating is 14 Aac for temperatures up to 45°C. See Figure 1 for de-rating curve.
Figure 1. Current Sensing Input De-rating Curve
Burden
Figure 2 illustrates the current sensing input burden characteristic.
At 0.5 Aac: 2.8
Ω
At 5.0 Aac: 0.3
Ω
Continuous Current
Current Sensing Input
0
2
4
6
8
10
12
14
16
-40 -20 0 20 40 60
Ambient Temperature (C)
Cu
rre
n
t (
Aa
c
)
BE1-50/51B-240 General Information