Page 2 of 4 031611 E141723 REVC
D. The meter shall have an accuracy of +/- 0.1% or better for volts and amps, and 0.2% for
power and energy functions. The meter shall meet the accuracy requirements of IEC687
(class 0.2%) and ANSI C12.201(Class 0.2%).
1. The meter shall provide true RMS measurements of voltage, phase to neutral and
phase to phase; current, per phase and neutral.
2. The meter shall provide sampling at 400+ samples per cycle on all channels
measured readings simultaneously.
3. The meter shall utilize 24 bit Analog to Digital conversion.
4. Meter shall provide Harmonics %THD (% of total Harmonic Distortion).
E. The meter shall include a three line, bright red, .56” LED display.
1. The meter shall fit in both DIN 92mm and ANSI C39.1 Round cut-outs.
2. The meter must display a % of Load Bar on the front panel to provide an analog
feel. The % Load bar shall have not less than 10 segments.
F. Meter shall be available in transducer only version, which shall not include a display.
1. The meter shall mount directly to a DIN rail and provide RS485 Modbus or DNP
3.0 output.
G. Power meter shall include virtual measurement upgrade packs, which shall allow user to
upgrade in field without removing installed meter.
1. Four upgrade packs shall be:
a. Volts and Amps Meter – Default
b. Volts, Amps, kW, kVAR, PF, kVA, Freq.
c. Volts, Amps, kw, kVAR, PF, kVA, Freq., kWh, kVAh, kVARh.
d. Volts, Amps, kW, kVAR, PF, kVA, Freq., kWh, kVAh, kVARh, %THD
Monitoring and Limit Exceeded Alarms.
2. These virtual upgrade packs must be able to be updated without physically
removing the installed meter.
3. Meter shall be a traceable revenue meter, which shall contain a utility grade test
pulse allowing power providers to verify and confirm that the meter is performing
to its rated accuracy.
H. The meter shall include 2 independent communications ports on the back and face plate,
with advanced features.
1. One port shall provide RS485 communication speaking Modbus ASCII, Modbus
RTU, or DNP 3.0 protocol through back plate.
2. Baud rates shall be from 9,600 baud to 57,600 baud.
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