In the world of photovoltaic (PV) system testing, three standout products by Fluke Corporation, which now includes Solmetric instruments, are the Fluke SMFT-1000 and the Solmetric PVA-1500T2 and PVA-1500HE2. These tools are designed to ensure the optimal performance and safety of solar installations, but they cater to slightly different needs and preferences in the solar industry. This blog post will explore the features, applications, and specific advantages of each tool, helping professionals in the solar industry make informed decisions based on their specific needs.
Product Overview
The Fluke SMFT-1000 is a multifunction PV tester (SMFT = Solar Multi-Function Tester) and performance analyzer that combines multiple testing functions in one device. It is designed to check that PV systems are performing at their optimal power output and operating safely under the standards set by IEC 62446-1. Key features include I-V curve tracing, earth bond resistance, insulation resistance measurements, and analysis through its integration with Fluke’s TruTest™ Software.
On the other hand, the Fluke Solmetric PVA-1500 series serves a similar function but emphasizes I-V curve testing for advanced PV module performance modeling of higher voltage systems. It is known for its high precision and capability to handle systems up to 1500 volts, making it ideal for large commercial or utility-scale solar arrays. The PVA-1500 series features automated data analysis and wireless connectivity, which streamlines the I-V curve testing process considerably.
Testing Capabilities and Specific Features
I-V Curve Tracing: Both the SMFT-1000 and the PVA-1500 series offer I-V curve tracing capabilities. They can connect directly at the string level or through a combiner box to perform their tests, providing essential data such as the maximum power point, fill factor, and performance ratios. The PVA-1500, however, allows for a choice of measuring either 100 or 500 data points along the curve, offering a more detailed analysis and a better understanding of the module performance.
Software and Interface: The SMFT-1000, which does not require a laptop or tablet for field use, can organize and analyze data efficiently for quick reporting using its built-in color screen. The collected data can be downloaded to Fluke’s TruTest Software for further analysis and to generate reports. The Solmetric PVA-1500 series requires a Windows-based device for field measurements. The Solmetric PV Analyzer software can be run on tablets or laptops with a touch-capable, colorful interface, providing detailed insights through the software's built-in advanced PV models and automated data management systems.
Usability and Portability: While both devices emphasize ease of use and portability, they each have unique features that make them an excellent choice in different use cases. The compact design of the SMFT-1000 and its multiple test features make it ideal for use on roof-mounted systems. The Solmetric PVA-1500 adds longer-range wireless functionality to the SolSensor, which collects environmental data during the I-V curve test. This extra range reduces setup time and is particularly useful in large-scale operations where multiple arrays need to be tested quickly and efficiently.
High Voltage and Efficiency Testing: The PVA-1500 models stand out for their ability to handle up to 1500 volts, making them suitable for testing utility-scale systems that usually operate at higher voltages. The PVA-1500T2 can test up to 1500 volts and 30 A, but the current rating drops to 10 A for modules with efficiency greater than 19%. The PVA-1500HE2 was specifically designed to test a high-efficiency modules' reliability without overheating or damaging the test instrument and can test up to 30 A regardless of the module efficiency. This makes the PVA-1500 series an excellent choice for commercial and utility-scale installations that require rigorous, high-voltage testing capabilities.
Applications and Ideal User Environment
Both tools are indispensable in different scenarios within the solar power industry. The Fluke SMFT-1000 is particularly well-suited for PV professionals focused on installation, commissioning, and maintenance services for residential and commercial roof-mounted solar installations. Its all-in-one functionality, compact size, and ease of use make it ideal for environments where a variety of tests need to be conducted efficiently and effectively.
The Fluke Solmetric PVA-1500 series, with its advanced analysis features and high voltage capacity, is well suited for utility-scale installations where detailed performance modeling and extensive testing are required. It is particularly valuable for engineers, technicians, and solar professionals working on extensive solar farms or for people working in research and development who need precise data to optimize the performance of high-efficiency solar arrays.
Conclusion
While both the Fluke SMFT-1000 and the Fluke Solmetric PVA-1500 series are excellent tools for ensuring the performance and safety of PV systems, the choice between them depends largely on the specific requirements of the project and the scale of the installation. The SMFT-1000 provides a robust, user-friendly solution for typical residential and commercial applications. For larger, more complex systems, especially those utilizing the latest high-efficiency modules, the PVA-1500’s detailed analytical capabilities and high-voltage handling make it the go-to device. As both are now under the Fluke umbrella, users can expect continued innovation and support, making either choice a reliable investment in the quality and efficiency of solar power systems.