CLASS 2000 METER
62-0389-03
10
d. Connect the AC mains power wires (Phase A, Phase B and Phase C) to their
respective positions as labeled on terminal block.Tighten the screws to 7 in-
lb of torque.
e. After all conductors are connected to their respective terminal block positions
and tightened down, verify that each terminal block screw is securely fas-
tened by gently tugging on each conductor. Verify no conductor wires are
frayed or are shorting to adjacent terminal block positions.
5. External Switch Mechanism/In-Line Fuse Installation
a. To ensure a safe installation, the Class 2000 meter requires an external
switch mechanism, such as a circuit breaker, be installed on the Class 2000
MAINS input wiring. The switch mechanism must be installed in close prox-
imity to the meter and easily reachable for the operator. This device must
also be marked as the disconnecting device for the Class 2000 meter.
b. Install 1/10 Amp Slow Activation in line fuses with the suitable voltage rating
for each conductor phase at the MAINS input to the meter. The fuses must
be labeled to indicate voltage and current rating as well as element charac-
teristics. The fuse element must be slow activating 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 enclo-
sure cover using the locking mechanism. Activate the external circuit breaker or
equivalent switch to apply AC MAINS power to the unit.
7. The Class 2000 meter display should turn on and indicate total kWh accumula-
tion reading.
NOTE: On demand meters the unit display, clock and other critical configuration
parameters will be reset once the unit installation and wiring is complete.
8. Using an AC Voltmeter, verify the input voltage readings are within the limits
specified below.
9. Remove power from the unit by de-energizing the external switch.
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
Nominal Voltage
Limits (+/- 10%)
120/208V, 3 Ph, 4 Wire
120 VAC (L-N)
108 to 132 VAC
277/480V, 3 Ph, 4 Wire
277 VAC (L-N)
249 to 305 VAC
240V, 3 Ph, 3 Wire
240 VAC (L-L)
216 to 264 VAC
480V, 3 Ph, 3 Wire
480 VAC (L-L)
432 to 528 VAC
347/600V, 3 Ph, 4 Wire
(WYE Only)
347 VAC (L-N)
540 to 660 VAC