Type VBII PV disconnect switches from Siemens are specifically designed for disconnecting three separate 600 Vdc circuits. Precisely aligned magnets are incorporated into each switchs line base assembly to quickly and safely extinguish the dc arc caused by disconnecting an...
BOS equipment from Shoals Technologies Group includes combiner boxes, disconnecting combiners, custom wire harnesses, junction boxes, PV wire, in-line fuses, racking and PV monitoring solutions. As module prices fall and projects scale, BOS cost savings become increasingly...
PV Powered is offering a new pair of 35 kW and 50 kW inverters. The PVP35kW and PVP50kW inverters incorporate many of the same installation and maintenance features as the company's larger units. For example, performance monitoring is housed in a separate section of...
DECK Monitoring has added two commercial solar thermal system monitoring packages to its existing suite of PV monitoring solutions. The new web-based products are configured for systems with either 2-inch or smaller inlet and outlet piping or with 2.5-inch or larger piping.
To streamline engineering analysis and product delivery, Unistrut Energy Solutions has developed cost-effective racking solutions that meet the dead and live load requirements for 75% to 80% of all commercial PV applications. This allows contractors to define racking costs...
The Interstate Renewable Energy Council (IREC) released the 2010 edition of its Field Inspection Guidelines for PV Systems. Supported in part by the US Department of Energy, the report is authored by Bill Brooks, who also wrote the 2006 edition. Bill is well known for his...
Distributed PV generation is on the rise, but manufacturers of large central inverters are eyeing an even bigger prize: power plants. Inverter selection and system design considerations for large projects and power plant applications are examined.
Design & Installation
Reduce up-front system cost and optimize long-term performance by avoiding the pitfalls of string sizing on autopilot. The author details array design best practices for determining the minimum and maximum number of modules per source circuit.
Operations & Maintenance
Operations management continually analyzes every step of the process, looking for ways to improve efficiency and effectiveness. Basic principles for optimizing personnel, resources and processes are all considered.
John Berdner has more than 25 years of experience in the design, manufacture and use of PV equipment and systems. As the founder and president of SMA America, John was integral in launching the first UL-listed grid-direct string inverters with 600 Vdc source circuits, which...