Appendix C Installation Examples; Full-Size Enclosures With The Combined Sensor Connector - Sel -734B Reference Manual

Full-Size Enclosures With the Combined Sensor
Connector
Ground Conductor
Sensor Cable
Control Cable
Date Code 20170207
Appendix C
Installation Examples
Figure C.1 shows a diagram of a typical installation of the Full-Size Enclosure
model with the combined sensor connector.
Ground the SEL-734B Capacitor Bank Control cabinet by using the ground
lug before making any other connections to the cabinet.
The sensor cable connects to the 14-pin connector on the bottom of the
enclosure. Three measurement legs connect to three combination sensors to
measure voltage and current on each phase. Certain sensor cables also connect
to a neutral current sensor. The Lindsey Manufacturing Company R-22748/
XX,YY cable connects to three Lindsey combination sensors and one Lindsey
neutral sensor (as shown in Figure C.1).
Both the Lindsey 9-587/XX/R-22102 and SEL-C529 cables connect to three
Lindsey Manufacturing Co. combination sensors. The SEL-C536 cable
connects to three Piedmont LSCV-SEL sensors. When using a sensor cable
that does not include the neutral sensor connection, a separate neutral sensor
cable may be routed through the bottom of the enclosure and connected to
terminal blocks inside the enclosure (see the Combined Sensor enclosure
wiring diagram available at selinc.com). This sensor arrangement is shown in
Figure C.2.
The control cable connects to the 19-pin connector on the bottom of the
enclosure. One leg of the cable connects to the control power transformer,
which powers the SEL-734B and provides operating power to the switches.
Each of the other three legs connects to a capacitor bank switch.
The SEL-C543 cable connects to three 5-pin switches and the control power
transformer, and it supports 52b auxiliary contact monitoring. The SEL-C544
cable is similar to the SEL-C543 cable, but it connects to 6-pin switches and
supports 52a and 52b auxiliary contact monitoring. The SEL-C547 cable is
similar to the SEL-C544 cable, but it connects to 7-pin switches. An
installation using these cables is shown in Figure C.1.
Alternatively, the SEL-734B may be connected to the switches through a
Cooper CCR116K1 junction box. An SEL-C556 cable connects the
SEL-734B to the junction box, and SEL-C526 cables connect each switch to
the junction box (as shown in Figure C.2). SEL does not offer a cable to
connect the CCR116K1 to the control power transformer.
Field Reference Guide SEL-734B Capacitor Bank Control