The inverter has five voltage and time setpoints for low voltage
ride-through (LVRT), configurable to the following ranges (measured as Line-ground).
Table 1. Inverter LVRT Settings
| Parameter |
Voltage Range |
Default Values for 240 V |
Time
(sec) |
| LVRT Point 1 |
240V/208V |
0.8 |
2 |
| LVRT Point 2 |
240V/208V |
0.6 |
1 |
| LVRT Point 3 |
240V/208V |
0.45 |
0.13 |
| LVRT Point 4 |
240V/208V |
0.45 |
0.13 |
The inverter has three high voltage ride-through setpoints, with one
instantaneous trip voltage setting, configurable to the following ranges (measured as
line to neutral):
Table 2. Inverter HVRT Settings
| Parameter |
Voltage Range |
Default Values for 240 V |
Time
(sec) |
| HVRT Point 1 |
240V/208V |
1.1 |
1 |
| HVRT Point 2 |
240V/208V |
1.2 |
0.13 |
| HVRT Point 3 |
240V/208V |
1.2 |
0.13 |
Table 3. Trip Accuracy
| Trip
Setting |
Accuracy |
| Voltage |
+/- 2% of nominal voltage |
| Time |
Longer of +/- 100 mS or 1% of set point |
| Frequency |
+/- 0.05 Hz |
Table 4. Voltage Ride-Through (L/HRVT)
Ranges of Adjustability and Default Settings
| Operating Region |
Voltage at Point of Interconnection (% of Nominal
Voltage) |
Operating Mode |
Ride-Through Until (s) |
Default Maximum Trip Time (s) |
Range of Adjustability Voltage Trip Magnitude (% of
Nominal Voltage) |
Range of Adjustability Clearing Time (s) |
| OV2 |
V>120 |
Cease to Energize |
N/A |
0.16 |
N/A |
N/A |
| OV1 |
120≥V> 100 |
Mandatory Operation |
0.92 |
1 |
110-120 |
1-13 |
| CO |
110≥V>100 |
Continuous Operation (Volt-Watt) |
N/A |
N/A |
N/A |
N/A |
| CO |
100>V≥88 |
Continuous Operation |
N/A |
N/A |
N/A |
N/A |
| UV1 |
88>V≥70 |
Mandatory Operation |
20 |
21 |
50-88 |
21-50 |
| UV2 |
70>V≥50 |
Mandatory Operation |
10-20 |
11-21 |
50-88 |
11-50 |
| UV3 |
50>V |
Momentary Cessation |
N/A |
2 |
N/A |
0.5-21 |