Basler Electric BE1-50/51B-237 - Manual (Page 15)

9252000899 Rev B BE1-50/51B-237/-238 General Information 1-5
Figure 1-4
BE1-50/51B-238 Burden
illustrates the current sensing input burden characteristic.
At 0.1 Aac .................................. 57.0 Ω
At 1.0 Aac .................................. 6.9 Ω
Figure 1-4. Current Sensing Input Burden (BE1-50/51B-238)
Frequency Response
A change of ±5 Hz from the nominal 50/60 Hz current causes <0.5% change in the current required for
pickup.
Transient Response
<10% overreach with system time constants up to 40 ms.
Harmonic Rejection
Rejection of odd and even harmonics is illustrated in Figure 1-5.
BE1-50/51B-234 CT Burden
0
20
40
60
80
100
120
140
0 2 4 6 8 10
Input Current (Amps)
Bu
rd
en
in
V
A (
rm
s)
BE1-50/51B-238 CT Burden