Rockwell Automation 1426 PowerMonitor 5000 Unit - Manual (Page 28)

28 Rockwell Automation Publication 1426-UM001F-EN-P - November 2013
Chapter 2 Install the PowerMonitor 5000 Unit
Pay particular attention to the correct phasing and polarity of current sensing
connections. The diagrams use the ‘dot’ convention to indicate transformer
polarity. The dot indicates the H1 and X1 terminals on the primary and
secondary of the CT respectively. Phasing of the CTs must correspond to the
phasing of the voltage sensing connections.
The following wiring diagrams indicate typical current sensing connections to
various types of power systems.
Figure 13 - Diagram I1 - Split-phase, 2 CTs
Figure 14 - Diagram I2 - 3-phase, 3-wire, 2 CTs
L1 L2
N
(if used)
Line
CTs (by user)
CT1
CT2
CTN
(if used)
Load Ground
Shorting Terminal
Block (by user)
Metering_Mode = Split-phase
PowerMonitor 5000
I1
I2
I3
I4
X1
X1
X1
X1
L1 L2 L3
Line
CTs (by user)
CT1
CT3
2 CTs Can Be Used Only
On 3-wire Systems
Load Ground
Shorting Terminal
Block (by user)
Metering_Mode = Delta 2 CT, Open Delta 2 CT,
or Delta Grd B Ph 2 CT, as applicable
PowerMonitor 5000
I1
I2
I3
I4
X1
X1
X1
X1