5.3 Current Sensor Installation and Wiring
Once the AC voltages have been confi rmed to be within acceptable limits,
you are ready to install the current sensors. The main power board
contains three header connectors located at the bottom center of the
board, TB2, TB3 and TB4.
TB2: Phase A Current Sensor Input
TB3: Phase B Current Sensor Input
TB4: Phase C Current Sensor Input
The Green Class Net Meter will be used with two basic types of current
sensors:
1. Split-Core Current Sensor: This sensor opens so that it can be
attached around the circuit conductor being monitored without
interrupting power. Unless otherwise specifi ed, all Green Class Net
Meters are supplied with this sensor type.
2. Solid-Core Current Sensor: This sensor does not open and requires
the monitored conductor be removed from the circuit to install the
current sensor. This type is only supplied when specifi ed at time of
order.
NOTE: The unit serial label specifi es if the unit is setup for split-core or
solid-core current sensors. Meters labeled for split-core current
sensors cannot be used with solid-core current sensors and
vice versa.
Both current sensor types output a 0-2 VAC signal proportional to the
current being measured.
Installing the Split-Core Current Sensor Assembly
STEP 1: Each phase being monitored will require one two-piece current sensor
assembly. Therefore, a three-phase meter will require three (3)
assemblies. Open the two-piece current sensor assembly by releasing
the nylon clamp using a fl at head screwdriver.
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