The new ArrayGuard CP combiner boxes, from Berlin-based Skytron Energy, are designed to meet the demand for highly power-efficient BOS components in utility-scale photovoltaic installations.
Its neatly arranged interior layout and compact light-weight design make the new ArrayGuard CP model particularly efficient with respect to power dissipation. This in turn ensures reliable operation even at outdoor operation temperatures from -40 to +50 degrees C and altitudes of up to 4000m above sea level.
ArrayGuard CP combiner box
Features of the ArrayGuard CP model include:
- Efficient DC connection of up to 24 strings
- Operational safety provided by integrated DC load disconnector
- Real-time string current monitoring at 100 ms scan intervals and acquisition of 1-minute mean values, using reliable shunt measurement techniques with high temperature-stable measurement precision of 0.5%
- Reliable string protection provided by gPV plug-in fuses for both PV+ and PV-
- Adaptable surge protection, using Combi Type 1+2 to handle direct strike currents, or Type 2 to handle indirect strike currents, compliant with local lightning protection standards
- Industry-standard data communication based on CAN fieldbus technology
- Fully integrated monitoring of all critical conditions: tripping of surge protector, on/off status of DC isolator switch, cabinet temperature
- Low cost operation ensured by efficient power management with 24 V dc supply over CAN bus and low power consumption at 1.5W max.
- Optimized cabinet layout providing efficient heat dissipation and prevention of condensation in humid climates
- Long service life outdoors ensured by rugged cabinet design using UV-resistant polyester material
- Straightforward installation, DC connection and maintenance provided by optimised mounting kit, clear terminal fixings, and easily replaceable plug-in string fuses
- Spacious allowance for flexible connection of DC main cables, suitable for large cable cross-sections and different connection methods, e.g. lugs, box terminals, double DC main cables
Skytron Energy’s expanded ArrayGuard combiner series adapts to accommodate additional functions, such as remote OFF for additional fire safety on rooftop installations, external DC isolator switch mounted on the front panel, 1500VDC operation or 32 string inputs, and UL certification for the U.S. market.
“Offering highest reliability for a motivating price, ArrayGuard CP will not only have a positive effect on general BOS costs, but will particularly benefit solar projects in tough-temperature and high-altitude zones,” says Torsten Schlaaff, the company’s Head of Hardware R & D. “Displayed in our PVGuard supervision platform, ArrayGuard combiner boxes facilitate high-resolution analysis of string and plant performance and thorough plant diagnostics.”