Basler Electric BE1-50/51B-122 - Manual (Page 3)

A-1
9252000997
First Printing: August 2010
Printed in USA
Copyright © 2010 Basler Electric, Highland Illinois USA
INTRODUTION
This manual, publication 9252000997, covers BE1-50/51B-122 (P/N 9252000122) relays and is a special
version of the standard manual for the BE1-50/51B-219 and BE1-50/51B-226 relays. The 50/51B-122
relay is a modified version of the BE1-50/51B-219, and has five ampere current sensing and provides an
extended instantaneous element time delay.
BE1-50/51B-122 relays have the following features.
 Plugs directly into an ABB CO case with no modification of case wiring required.
 Provides up to 300 milliseconds of instantaneous element time delay.
 Replicates ABB CO and IEC time characteristic curves.
OPERATING DIFFERENCES
Operating differences between the BE1-50/51B-122 relay and the standard BE1-50/51B-219 relay center
around the function of configuration switch SW3 and the time characteristic curves available in the relays.
SW3 Settings
Operation of switch SW3 (illustrated in Figure 2-2) in the BE1-50/51B-122 differs from that in the BE1-
50/51B-219 relay. SW3 operation is summarized in the following paragraphs.
SW3-1 Selects the system operating frequency.
Off selects 60 hertz operation.
On selects 50 hertz operation.
SW3-2 Selects an additional 100 milliseconds of instantaneous element time delay.
Off disables additional 100 milliseconds of time delay.
On enables additional 100 milliseconds of time delay.
SW3-3 Selects an additional 200 milliseconds of instantaneous element time delay.
Off disables additional 200 milliseconds of time delay.
On enables additional 200 milliseconds of time delay.
Placing both SW3-2 and SW3-3 in the On position provides a total instantaneous element
time delay of 300 milliseconds.
SW3-4 Selects either instantaneous or integrating reset characteristic.
Off selects instantaneous reset.
On selects integrating reset.
The integrating reset function operates only when there is sufficient sensing current to
power the relay.
Time Characteristic Curves
The ABB CO and IEC curves listed in Table 1-3 are available for selection in the BE1-50/51B-122 relay.
GE IAC curves are not available in this relay.