6.4 Current Sensor Installation & Wiring
Once the AC voltages have been confirmed to be within acceptable limits, you are
ready to install the current sensors. TB1, positions 5 and 6 are the inputs for
Phase A, TB1 positions 7 and 8 are the inputs for Phase B and TB1 positions 9
and 10 are the Phase C inputs.
The Single-Phase option use TB1 pos 5&6 are A - TB1 pos 7&8 are B phase -
factory installed jumper wire on positions 9&10. Factory installed jumper should
not be removed.
The E-Mon Class 3400 Meter can be used with two types of 0-2V current sensors.
1. Split-core current sensor. This sensor opens so that it can be attached
around the circuit being monitored without interrupting power. Unless oth-
erwise specified, all Class 3400 meters are supplied with this sensor type.
2. Solid-core current sensor. This sensor does not open and requires the mon-
itored conductor to be removed from the circuit to install the current sensor.
This type is only supplied when specified at time of order.
6.4.1 Installing the Split-Core Current Sensor Assembly
1. Each phase being monitored will require one two-piece current sensor
assembly. Open the two-piece current sensor assembly by releasing the
nylon clamp using a flathead screwdriver.
2. Reassemble the current sensor assembly around the conductor(s) to be
monitored. Ensure the current sensor halves marked "Load" are both facing
the load side of the conductor. The colored arrow will be on the source side
of the conductor being monitored and MUST be pointed in a clockwise
direction around the conductor being monitored. Tighten the nylon clamp
to complete the assembly.
Fig. 5. Split Core Sensor.
Fig. 6. Split Core Sensor.
E-MON CLASS 3400 METER