14
3 CT inputs
Digital output ports. The ports can be used to output kWh, kVARh, or kVAh pulses to external
devices, or to toggle on and off to control a remote device or relay.
USB port for powering the meter during setup
Wiring CTs
1)
Insert the CT wires into the connector/s. See the following CT wire lead polarity table for the correct
wiring configuration.
CT
W
IRE
L
EAD
P
OLARITY
CT Type
CT Lead +
CT Lead -
Shield
Power Flex (Rogowski coil)*
Red
Black
Shield Wire
Split Core CT mV (SCP, SCM series)
White
Black
Table II-1: CT Polarity
2)
Attach the CT connectors onto the Power Patrol connections labeled CT 1, CT 2 and CT 3.
3)
Place the CTs on the phase wires of the load to be monitored and corresponding to the phase of the
voltage leads. The CT labeled CT 1 must be placed on L1 phase voltage wire, CT 2 must be on the L2
voltage and CT 3 on the L3 voltage. Refer to Phase Verificatio later in this section for information
about the CT LEDs and verifying the CT installation.
NOTE:
The directionality for Rogowski Coils is the arrow on the label pointing toward the
* Power Flex Rogowski Coils have a shield wire which must be connected to the meter. This reduces
interference and improves accuracy of the CT.
CT Inputs
Ethernet
Port
RS-485
Port
Digital
Output Port
Voltage Connections
USB Port