
19
P
OWER
P
ATROL
(S
ERIAL
&
E
THERNET
C
OMMUNICATION
)
The Ethernet cable has a Link LED on its connector that glows amber when connected to the network
and flashes green during Ethernet traffic.
BACnet/Modbus
Description
Steady Green
Power is applied to the meter.
Flashing Green
The meter is communicating.
Table II-3: Ethernet COM LED Signals
Phase Verification
Phase Verification is a unique feature of the Power Patrol meter that simplifies installation by ensuring
proper CT orientation and avoiding faulty data collection.
V
ERIFYING THE
P
OWER
P
ATROL
M
ETER
S
ETUP
U
SING THE
LED
S
The Power Patrol meter uses three bi-color Phase Verification LEDs to check each phase. These LEDs
provide the following information:
All LEDs are green—the system power factor is greater than 0.55 and the CTs are properly
placed on the corresponding voltage phases.
Any one LED is red—there is a phasing connection error.
Two LEDs are red and one is green—two CTs are reversed.
All three LEDs are red—all CTs are incorrectly connected.
D
ID
Y
OU
K
NOW
?
If the total system
power factor is less than 0.55, the
LEDs will be red even if
connected properly. This
situation is rare but could occur
if, for example, the load to be
monitored is a lightly loaded
electric motor where it is
common for the power factor to
be less than 0.55 and the
corresponding LEDs will be red.
Phase Verification LEDs