CLASS 3400 METER
62-0391-03
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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 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 otherwise speci-
fied, all Class 3400 meters are supplied with this sensor type.
2.
Solid-core current sensor. This sensor does not open and requires the monitored
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.
Fig. 5. Split Core Sensor.
2.
Reassemble the current sensor assembly around the conductor(s) to be moni-
tored. 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 con-
ductor being monitored and MUST be pointed in a clockwise direction around the
conductor being monitored. Tighten the nylon clamp to complete the assembly.
Fig. 6. Split Core Sensor.
M33213
LOAD
SOURCE
