This inverter was opened and mounted as a display, but was never used. There are 2 holes that have been punched out on the knock-out holes. The SD card is still with the box along with the mounting bracket. 20kW Transformerless Three Phase Inverter SE20KUS-480. DC-AC PV inverter is specifically designed to work with the SolarEdge power optimizers. Because MPPT and voltage management are handled separately for each module by the power optimizer, the inverter is only responsible for DC to AC inversion. The fixed-voltage technology ensures the solar inverter is always working at its optimal input voltage over a wider range of string lengths and regardless of environmental conditions. A proprietary data monitoring receiver has been integrated into the inverter and aggregates the power optimizer performance data from each PV module. This data can be transmitted to the web and accessed via the SolarEdge Monitoring Portal for performance analysis, fault detection and troubleshooting of the PV system. Increased energy yield compared to traditional inverter systems. No power loss due to module mismatch due to power optimization per module. Constraint-free design allows for utilization of more roof area. Easy and cost efficient maintenance for increased up-time of your PV system. During Installation: safe string voltage until inverter & AC supply are turned on. Maintenance: safe string voltage with an automatic DC shutdown once inverter is turned off. Emergency: safe string voltage with an automatic DC shutdown after grid disconnection or in reaction to high temperature. Ability to monitor the PV system anytime, anywhere in order to guarantee optimal operation. Module level, real-time alerts of system issues pinpointed on a virtual map. Max Power per String = 6000 watts (208V) or 12,750 watts (480V). Integrated arc fault protection (Type 1) for NEC 2011 690.11 compliance. Pre-assembled DC disconnect/safety switch for faster installation. Small, lightweight and easy to install, by a single person on supplied bracket. Outdoor and indoor installation – IP65 / NEMA 3R. Fixed string voltage – allows for easier design with uneven string lengths, resulting in optimal inverter efficiency, reliability, and reduced install costs. Module level MPPT – prevents energy loss due to module mismatch or partial shading; more quickly reacts to changes in sun irradiance and temperature, minimizing power loss on cloudy days, and increasing overall energy yield. Built-in communication gateway with LAN and wireless connectivity options enable easy broadband connection to a remote monitoring server. Free monitoring for 25 years. Optional Rapid Shutdown functionality for NEC 2014 690.12. The item “SOLAREDGE SE20K-US 20KW THREE PHASE TRANSFORMERLESS GRID TIE INVERTER, 480V” is in sale since Tuesday, March 29, 2016. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solarclam-p” and is located in Philadelphia, Pennsylvania. This item can be shipped to United States.