Basler Electric BE1-87T - Manual (Page 62)

4-20 BE1-87T Installation 9171300990 Rev V
Single-Phase Units
Three Input-Disabling Jumpers are located on each Analog Board #1 as shown in Figure 4-20.
Single-Phase Units with Option 1-0
Three additional Input-Disabling Jumpers are also located on each Analog Board #1 as shown in Figure
4-21. J9 is a factory adjustment and is not intended to be changed in the field.
Single-Phase Units with Option 1-1
BE1-87T single-phase units are shipped with all inputs enabled.
Three-Phase Units
Three Input-Disabling jumpers are located on each Analog Board #1 as shown in Figure 4-20.
Three-Phase Units with Option 1-0
Three additional Input-Disabling jumpers are also located on each Analog Board #1 as shown in Figure 4-
21. J9 is a factory adjustment and is not intended to be changed in the field.
Three-Phase Units with Option 1-1
The jumpers shown in Figures 4-20 and 4-21 are shipped in the disabled position and no further
adjustment should ever be necessary.
For Three-Phase Units with Input Sensing Type E (two inputs per phase)
The jumpers shown in Figures 4-20 and 4-21 are shipped with Input 3 enabled, and Inputs 4 and 5
disabled. If only two inputs are actually used (which must be Inputs 1 and 2), it is important to disable the
unused input of each phase by means of the internal Input-Disabling jumpers provided on each of the
three Analog Boards #1 as shown in either Figure 4-20 or Figure 4-21. J9 in Figure 4-21 is a factory
adjustment and is not intended to be changed in the field.
For Three-Phase Units with Input Sensing Type G (three inputs per phase)
Sensing Connection Diagrams
Each connection diagram provides, as an example, typical transformer terminal markings, and voltage
diagrams that might be found on a transformer nameplate with the winding interconnections shown. The
designations for high side and low side windings are for illustrative purposes only. For example, a
diagram for a delta-wye transformer is applicable to a wye-delta transformer if the winding
interconnections are the same. The phase shifts shown in the voltage diagrams assume A-B-C Phase
sequence (rotation).
Each connection diagram shows the CT circuit safety ground located at the switch board panel terminal
block as recommended in ANSI Standard C57.13.3.
Single-Phase Input Sensing Connections
Typical single-phase input sensing connections are illustrated in Figure 4-22.
Single-phase units may also be used in three-phase configurations, one on each phase. Figure 4-23
through Figure 4-26 show several typical three-phase sensing examples using three BE1-87T single-
phase relays. Many other configurations are possible.