E-Mon 3208200W KIT - Manual (Page 6)

1.1.1 Meter Board (continued)
The Class 4000/4100 meter displays electrical consumption (kWh) on its 6-digit,
electro-mechanical display, and is read directly - without multipliers. An LED on
the board pulses in response to the load, with the speed of the pulse indicating
the amount of load (a heavier load will blink more rapidly).
1.1.2 RF Board (Class 4100)
The optional RF board (Class 4100) connects to the meter board via two pair of
conductors. One pair supplies power (5 VDC) to the RF board and the other pair
supplies a pulse signal that is stored as interval data. The accumulated data is
normally transmitted on a daily basis through its on-board antenna. This data is
transmitted pier-to-pier, then utilized for AMR (Automatic Meter Reading). The
RF board operates in the 900 MHz range with a maximum transmitting power of
100 mw.
Figure 1.1.2 RF Board (Class 4100)
5 VDC In Pulse In
Antenna
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5.3.1 Installing the Split-Core Current Sensor Assembly (continued)
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.
IMPORTANT: When looking from the source side of the conductor(s)
being monitored, you should see the arrow on the current
sensor assembly. The arrow should be pointing in a
clockwise direction around the conductor(s) being
monitored. If the arrow is not positioned on the source
side, inaccurate readings will result.
5.3.2 Current Sensor Wiring
Once the current sensors are installed onto their appropriate phase conductors,
you can begin terminating the current sensors onto the Class 4000/4100 meter
board using the two-screw removable terminal plug. The current sensor leads
can be extended up to 2,000 feet from the meter. To extend the length of the
wires, use #22 AWG twisted-pair wire with one white and one black wire.
The current sensor connected to TB2 must be on the same phase as the MAINS
voltage terminal A and the current sensor connected to TB3 must be on the same
phase as the MAINS voltage terminal B. Failure to do so may result in inaccurate
readings.
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A B C
A
W B N
Line Voltage Current Sensors
A
N
1-Phase, 2-Wire Connection
120-Volt or 277-Volt Single-Phase
A B C
A B
W B W B N
Line Voltage Current Sensors
A
N
Single-Phase, 3-Wire Connection
120/240-Volt Single-Phase
B
* *
LOAD SOURCE LOAD SOURCE
B
W B