RIDE-THROUGH CAPABILITIES
FRONIUS GALVO 1.5-1 – 3.1-1
Fronius International GmbH
hereby confirms, that the inverters
/ Fronius Galvo 1.5-1, 2.0-1, 2.5-1, 3.1-1
Are capable of meeting the following ride-through and trip settings:
Operating
Region
OF2 f > 64 Trip 0.1667
OF1 63 < f < =64 Ride Through 20 21
NOH 63 >= f > 60 Normal Operation Indefinite Indefinite
NOL 57 <= f < = 60 Normal Operation Indefinite Indefinite
UF1 56 <= f < 57 Ride Through 20 21
UF2 f < 56 Trip 0.01667
Range (Hz) Operating Mode
Ride Through Trip
Duration (s)
Wels, February 13th 2015
Operating
Region
OV2 V > 120 Trip 0.1667
OV1 120 >= V > 110 Ride Through .92 1
NOH 110 >= V > 100 Normal Operation Indefinite Indefinite
NOL 100 >= V >= 88 Normal Operation Indefinite Indefinite
UV1 88 > V >= 70 Ride Through 20 21
UV2 70 > V >= 50 Ride Through
UV3 V < 50 Permissive Operation 0.5
Range (%) Operating Mode
Ride Through Trip
Duration (s)
201 21
Note 1: Rapid changes in voltage below 70% L-L generally result in loss of output. Slower ramps can allow inverter to remain on below
70%. The unit is capable of riding through all voltage drops of 50% L-N. Full LVRT functionality will be added via software in 2015.
Additionally, the inverters can meet Return to Service requirements of 60.1 ≥ f ≥ 59.9, 110 ≥ V ≥ 88 and 300 –
600s. The inverters can meet frequency ride-through requirements in the range of 45 – 65 Hz.
At a voltage drop down to 70% L-L of the nominal voltage the inverter is capable of staying connected for at
least 21 sec. At a voltage drop down to 50% L-N of the nominal voltage the inverter is capable of staying
connected for at least 21 sec.
At a frequency drop down to 50 Hz the inverter is capable of staying connected for at least 21 sec. At a
frequency rise of 65 Hz the inverter is capable of staying connected for at least 21 sec.
The trip limits of the inverter have to be set in a way not contradicting this behavior.
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To demonstrate this behavior test results are shown in this certificate.
Test Data
Fronius has collected test data on a representative sample of the Galvo 3.1-1 to verify ride-through behavior
based on voltage and frequency variation tests described as follows. Other Galvo power classes were not
tested as the hardware is the same as the model tested
(only peak power output differs).
Each test uses an AC grid simulator to achieve a step or
ramp function depicted at right.
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Voltage Ride-Through Test
Model: Fronius Galvo 3.1-1 (Setup 240N)
Test Conditions: 240VAC (phase to phase), 60Hz, 3100W output
Step:
Start: 120V (Phase to Neutral) tr: 0s
Pulse: 60V (Phase to Neutral) td: 21s
End: 120V (Phase to Neutral) tf: 0s
Oscillograms:
TEST L1
Chanel 1: Current on Phase 1
Chanel 2: Voltage Phase 1 to Neutral
Chanel 3: Voltage Phase 2 to Neutral
Chanel 4: Voltage Phase 1 to Phase 2
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