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GREEN CLASS METER
characteristics. The fuse element must be slow activat-
ing type.
6. Once the MAINS wiring is complete, replace the clear
lexan protective shield over terminal block TB1 and
close the enclosure front panel. Secure the enclosure
cover using the locking mechanism. Activate the exter-
nal circuit breaker or equivalent switch to apply AC
MAINS power to the unit.
The Class 200 meter display should turn on and indi-
cate total kWh accumulation reading.
NOTE: The unit display and other critical configuration pa-
rameters will be reset once the unit installation and
wiring is complete.
7. Using an AC Voltmeter, verify the input voltage read-
ings are within the limits specified below.
NOTE: For 3-Wire systems, the voltages are measured
Phase to Phase. On 4-Wire systems the voltages
are measured Phase to Neutral.
Meter Input Voltage
Configuration
120/208V, 3 Ph, 4 Wire
277/480V, 3 Ph, 4 Wire
240V, 3 Ph, 3 Wire
480V, 3 Ph, 3 Wire
8. Remove power from the unit by de-energizing the
external switch.
Current Sensor Installation & Wiring
Once the AC voltages have been confirmed to be within ac-
ceptable limits, you are ready to install the current sensors.
The MAIN power board contains either a 10-position terminal
block (TB1) (standard configuration) or three header con-
nectors located at the bottom center of the board, TB2, TB3
and TB4 (ST configuration). If supplied with the TB1 terminal
block, the current sensors are connected to the 6 positions
on the right side. Both styles are marked with the appropriate
phase designation and conductor color. This format must be
followed in order for the meter to function correctly.
The Class 200 meter is used with a split-core current sensor.
This sensor opens so that it can be attached around the
circuit conductor being monitored without interrupting power.
Unless otherwise specified, all Class 200 meters are supplied
with this sensor type.
The split-core current sensor outputs a 0-2 VAC signal pro-
portional to the current being measured.
62-0340-01
Nominal
Limits (+/- 10%)
Voltage
120 VAC
108 to 132 VAC
277 VAC
249 to 305 VAC
240 VAC
216 to 264 VAC
480 VAC
432 to 528 VAC
Installing the Split-Core Current
Sensor Assembly
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 flat head screwdriver.
2. Reassemble the current sensor assembly around the
conductor(s) to be monitored. Ensure the current sen-
sor 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.
Current Sensor Wiring
Once all the current sensors are installed on their appropriate
phase conductors, you can begin terminating the current sen-
sors on to the Class 200 main power board.
The current sensor leads can be extended up to 2,000 feet
(using #14-22 AWG wire) for remote monitoring applications.
Consult your local electrical codes for proper wire sizing (#22
AWG twisted pair wire with a black and white conductor, rated
for 600 VAC recommended).
8
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