Technical Data; Accuracy; Measurement; Models And Electrical - Fronius Smart Meter 240V-3 UL Instructions De Service

Technical data

Accuracy

Normal Operation
Line voltage: -20% to +15% of nominal
Power factor: 1.0
Frequency: 48 - 62 Hz
Ambient Temperature: 23° C ± 5° C
CT Current: 5% - 100% of rated current
Accuracy: ± 0.5% of reading

Measurement

Update Rate: 0.1 second. Internally, all measurements are performed at this rate.
Startup Time: ~1.0 second. The Fronius Smart Meter starts communicating this long
after AC voltage is applied. Energy measurement starts 50-100 milliseconds after AC is
applied.
Default CT Phase Angle Correction: 0.0 degrees.
Models and Elec-
trical
The Fronius Smart Meter has an optional neutral connection that may be used for meas-
uring wye circuits. In the absence of neutral, voltages are measured with respect to
ground. The Fronius Smart Meter uses the phase L1 (øA) and phase L2 (øB) connec-
tions for power.
Over-Voltage Limit: 125% of nominal Vac. Extended over-voltage operation can dam-
age the Fronius Smart Meter and void the warranty.
Over-Current Limit: 120% of rated current. Exceeding 120% of rated current will not
harm the Fronius Smart Meter but the current and power will not be measured accur-
ately.
Maximum Surge: 4 kV according to EN 61000-4-5
Power Consumption: The following table shows maximum volt-amperes, the power
supply ranges, typical power consumption, and typical power factors with all three
phases powered at nominal line voltages. The power supply consumes most of the total
power, while the measurement circuitry draws 1-10% of the total (6-96 milliwatts per
phase, depending on the model). Due to the design of the power supply, the Fronius
Smart Meter draws slightly more power at 50 Hz.
Service
240V-3
480V-3
Meter Service Nominal Vac
Type Line-to-Neutral
240V-3 UL
480V-3 UL
600V-3 UL
Meter Real
Power Power
Type (60 Hz) (50 Hz)
1.2 W 1.5 W
UL
1.2 W 1.6 W
UL
Nominal Vac
Line-to-Line
120 208-240
277 480
347 600
Real Powe Rated
r VA *)
Facto
r (50
Hz)
0.70 4 VA
0.70 3 VA
Phases Wires
1 - 3 2 - 4
1 - 3 2 - 4
1 - 3 2 - 4
Power Supply Power Sup-
Range (Vac) ply Termin-
als
166 - 276 L1 and L2
384 - 552 L1 and L2
31