02 August 2012
SMA has released its new Sunny Island 4548-US and 6048-US off-grid solar inverters for the North American market (i.e., SMA America and SMA Canada). Expanding upon the proven technology of the Sunny Island 5048-US, these devices reach a new maximum efficiency of 96% and California Energy Commission (CEC) weighted efficiencies up to 94.5%, as well as up to a 20% increase in power output for the Sunny Island 6048-US. The Sunny Island 4548-US and 6048-US can be paired with SMA's Multicluster Box, making them suitable for 3-kilowatt (kW) through 100kW off-grid photovoltaic (PV) systems.
Additional features of the Sunny Island 4548-US and 6048-US include intelligent battery management for maximum battery life, state-of-charge calculation and alternating current (AC) and direct current (DC) coupling. Applicable for single- and three-phase PV systems, they also offer parallel connection and modular expansion. Their robust surge capability is suitable for starting large loads and their durability is enhanced with SMA's patented OptiCool active temperature management system.
Installers can utilise SMA's advanced data collection and communications devices, such as the Sunny WebBox data logger, to help track system performance. Data can be transmitted by cable to the SMA Sunny Portal, one of the largest Web platforms for monitoring, managing and presenting PV systems.
SMA's Multicluster Box for the Sunny Island 4548-US and 6048-US is a model solution for the easy installation of island and hybrid systems up to 100kW. It allows two, three or four three-phase clusters, each consisting of three Sunny Island inverters, to be connected in parallel. Prewired and equipped with a main connection for PV or wind energy systems, the Multicluster Box includes all communications cables necessary for installation.