Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 Master Module Installation Instructions User Manual
Page 20
20 Powermonitor 3000 Master Module
Publication 1404-IN007F-EN-P - November 2009
The shorting terminal block should be located adjacent to the Powermonitor 3000 master
module so that it is readily accessible should service be needed. Use 2.5 mm
2
(14 AWG) wire
for the short run between the power monitor and the shorting terminal block. Use wiring of 4
mm
2
(12 AWG) or larger between the shorting terminal block and the CT so that the
additional load of the wiring does not overload the CT and reduce its accuracy.
Do not install fuses or other overcurrent protection in the secondary circuit of a CT.
Refer to System Accuracy Considerations on
for guidelines on PT and CT selection.
Refer to Specifications on
for information on voltage isolation levels and wire
termination recommendations.
The wiring diagrams depict wiring methods for a variety of power system configurations. You
need to configure your power monitor to match the power system configuration for correct
operation.
Refer to the Powermonitor 3000 Unit User Manual, publication
, for detailed
instructions on unit configuration.
IMPORTANT
You may install either two or three CTs for any of the Delta or Open Delta wiring or
voltage modes.
Refer to the wiring diagrams on pages
, and
for wiring of a two CT configuration.
Whether there are two or three CTs in a circuit does not affect the voltage wiring.
Refer to the Powermonitor 3000 Unit User Manual, publication
.