
EnergyPro EP600 User Manual
1P2W
This is for a single phase circuit. The EnergyPro assumes that V1
and CT1 (and CT2, CT3 if used) are connected to the same phase.
The 1P2W mode allows the use of CT2 and CT3 for monitoring
multiple single phase loads. V2 is connected to neutral for the
internal power supply.
1P3W
This is for a split phase circuit. Usually 120V from each line -
neutral and 240V from line - line.
3P3W
This is a three phase circuit that does not have a neutral (delta
system). For direct connection the voltages are connected. A-B
(ch1) and C-B (ch3) and the CTs are connected to A (ch1) and C
(ch3). Vca is calculated from the two voltage measurement and Ib
is calculated from the two current measurements.
Note 1. V2 and neutral are both connected to Phase B. V2 is connected for the internal power
supply and neutral is connected for measurement purposes.
Note 2. For direct connection in a delta system the 3P4W connection can be used with the neutral
connection floating or connected to ground.
Note 3. If the voltage and current inputs are connected to external CTs and PTs, then the external
PTs must be connected A-B and C-B and the external CTs connected to A and C. The EnergyPro
should be configured for 3P3W, V1 connected to A secondary, V3 connected to C secondary, V2 and
neutral connected to the PT secondary common.
3P4W
This is for a three phase circuit where three voltages, line to
neutral, and three currents are measured. If a neutral
connection is not available the neutral input may be left floating
or connected to ground. Line –Line voltage measurements are
available on the EnergyPro front panel and in software.
2.5E
Used when there are two voltage (line –neutral) measurements
and three phase current measurements. EnergyPro assumes that
the two voltage measured are phases A and C, and the voltage for
phase B is calculated from measurements of phase A and C. V2 is
connected to neutral for the internal power supply.