Basler Electric BE1-50/51B-219 - Manual (Page 31)

9252000981 Rev J 25
An additional fixed delay of 0.1 second may be added with internal switch SW3-2. This delay applies to
both phase and ground applications. Closing switch SW3-2 provides an additional delay of 0.1 second.
The
Controls and Indicators chapter illustrates the location of SW3.
The instantaneous element in BE1-50/51B-219 and BE1-50/51B-226 relays may be set lower than the
instantaneous element in ABB relays and still have the same reach. This is because the BE1-50/51B-219
and BE1-50/51B-226 instantaneous element effectively eliminates the fault current transient overreach
components. When calculating BE1-50/51B-219 and BE1-50/51B-226 relay instantaneous element
settings, calculate the symmetrical value without any adder for transient overreach.
Figure 10. Instantaneous Characteristic Curves
Burden
Burden is nonlinear. Figure 11 illustrates the device burden.
BE1-50/51B-219
At 0.5 amperes: 4.8
Ω
At 5.0 amperes: 0.2
Ω
BE1-50/51B-219/-226 Specifications