Installing solar modules isn’t just about layout and yield, but also depends on clean and compliant cabling. Under the international standard IEC 60364-7-712, which governs electrical installations in photovoltaic systems, only connectors from the same manufacturer may be paired.
EMC-direct – wiring systems correctly and safely
This requirement helps to ensure stable, lasting connections. Proper assembly is critical to avoid faults, power losses and avoidable maintenance costs. According to Stäubli’s Jurij Gerdes, pre-assembled cable harnesses are among the simplest and most effective ways to enhance both safety and installation efficiency from the outset.
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Crimping crucial for verifiability
It’s a common assumption that anyone can crimp – but does every crimp deliver the reliability expected over a 25-year system lifespan? That’s the benchmark for a high-quality solar installation. Using certified tools guarantees a clean, consistent connection and improves overall DC system resilience.
Stäubli, for example, offers professional tools tailored to the original MC4 product family. Its harmonised crimping tool accommodates three conductor cross-sections, has been rigorously tested and approved, and enables proper assembly. It also features a registered design element that allows each crimp to be fully traceable, supporting both proactive error prevention and detailed root cause analysis when needed.
EMC-direct – these installation faults are easily avoided
Harnessing the benefits
Innovative cabling solutions for the connection between modules and inverters can significantly accelerate installation and improve system robustness. Pre-assembled cable sets help reduce installation time and minimise the likelihood of configuration errors.
Whether using customised or standard layouts, industrial cabling solutions such as IEC 62930-certified DC-PV cable assemblies offer durable performance and a long service life. both of which are essential qualities for any professional solar project. (JG/TF)
EMC-direct– don’t underestimate DC connectors
Guest author Jurij Gerdes is Field Sales Engineer Renewable Energy at Stäubli Electrical Connectors.
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