GE Multilin
Sub Meters
12
1.3.2. Standard Measurements
The EPM 2000 can measure, locally display and remotely transfer over MODBUS RTU, the
following electrical parameters over the input range with an accuracy of 0.5% or better for
Volts and Amps and 1% for Power and Energy functions:
Amps: 50mA – 6A, Overload: 10A continuous, 50A for 3 seconds.
Volts: 80- 600V Phase - Phase and 48 - 347 V Phase – Neutral
Burden (Load): 0.2VA per Volts / Amps input
Frequency: 45 – 65 Hz
•
True RMS voltage phase to neutral and 3phase average.
•
True RMS voltage phase to phase and 3phase average.
•
True RMS current per phase and 3phase average.
•
Real Power and Energy.
•
Reactive Power and Energy.
•
Apparent Power and Energy.
•
Power Factor.
•
Frequency.
The EPM 2000 provides all single phase (per-phase) Real, Apparent, Reactive Power and
Power Factor values. Positive (Inductive) and Negative (Capacitive) Reactive Energy is
separately accumulated for Lead / Lag analysis.
1.3.3. Accuracy
Measurement
Class 1.0, % of reading
•
Voltage LN, per phase
0.5
•
Voltage LL, per phase
0.5
•
Voltage LN, avg
0.5
•
Voltage LL, avg
0.5
•
Amp, per phase
0.5
•
Amp, avg
0.5
•
Amp, Phase Angle per phase
2º
•
Frequency
0.1
•
Real Power, (kW) Per Phase & Total
1.0
•
Reactive Power, (kVAR) Per Phase &
Total
2.0
•
Apparent Power, (kVA) Per Phase &
Total
1.0
•
Power factor, Per Phase & average
1.0
•
Active Energy, (kWh) Import/Export
1.0
•
Reactive Energy, (kVARh) (Ind / Cap)
2.0
•
Apparent Energy, (kVAh)
1.0
* Additional error of 0.05 % of full scale for meter input current below 100 mA.