Power One Aurora PVI Inverters
Power-One's Aurora PVI inverters have two separate MPPT input sections, allowing for two sub-arrays to be configured with differing string lengths, orientations, or even different sizes, brands, or types of PV modules. Conditions on one string will not affect the other. Additionally, the PVI inverters have two input terminals for each separate MPPT section allowing as many as four strings of modules (two on each MPPT) to be connected without separate string fusing. Both MPPT sections can also be paralleled for use with a single array. A wide input voltage range allows for low wattage installations with reduced string sizes here needed, The Aurora PVI series are some of the most flexible string inverters available.
An integrated LCD displays real-time operating parameters, and RS-485 and USB interfaces can connect remote monitoring systems. An integrated DC disconnect is standard on all "S" models (models without a DC disconnect are available by special order). Aurora PVI inverters can produce full-rated power at ambient temperatures up to 122°F (50°C). The fan-less design and NEMA 4X enclosure provide a water and airtight seal. Output voltage can be set for 240 VAC split-phase, or 208 VAC or 277 VAC (480 VAC WYE) for 3-phase systems (3 inverters required for phase balancing).
All PVI inverters are Listed to UL 1741/IEEE 1547 and CSA-C22.2N.107.1-01 for the U.S. and Canada, and come with a 10-year warranty, which is extendable to 15 or 20 years.
Power One makes inverters for negative or positive grounded PV arrays ("isolated" and with an "-I-" in the model number), and also transformerless inverters for non-grounded arrays. When using a transformerless inverter, all PV array wiring must be double insulated (PV wire), and if a seprarte DC fused string combiner is used, the combiner must provide for fusing on both the positive and negative conductors. Similarly, any external DC disconnect switches must disconnect both the positive and negative conductors.
Power One Aurora PVI Transformerless Inverters
Power-One's Aurora transformerless single-phase inverters are available in sizes covering the most common residential requirements, and can be used in groups of three for small to medium sized commercial three-phase applications. The transformerless design reduces internal power losses for high efficiences. Output voltage can be 240 VAC split-phase, or 208 VAC or 277 VAC (480 VAC WYE) for three-phase systems. All five units have dimensions of 33.75" H x 12.75" W x 8.25" D, including the DC disconnect.