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Select a topic below to explore independent field guides, equipment recommendations, and methodology overviews. New resources are added regularly.
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IV Curve
String and module-level current-voltage characteristic analysis for commissioning and fault diagnosis.
Insulation Resistance
DC insulation testing protocols, voltage selection, and IEC 62446 pass/fail thresholds for PV arrays.
Voltage
Open-circuit and operating voltage measurement, STC correction, and string voltage verification methods.
Current
Short-circuit and operating current measurement with clamp meters, irradiance correction, and mismatch detection.
Series Resistance
Identifying elevated Rs from connector degradation, cell cracking, and solder bond failure using IV curve analysis.
Arc Faults
Detection methods, AFCI requirements, and field testing approaches for series and parallel DC arc faults.
Ground Faults
Locating and characterising DC ground faults with insulation resistance testers and fault location equipment.
Bifacial Modules
Testing considerations for bifacial technology — rear-side irradiance measurement, bifaciality factors, and yield assessment.
Inrush Current
Measuring and managing transient inrush current during inverter energisation, capacitor charging, and system startup sequences.
New Module Technology
Testing implications of TOPCon, HJT, perovskite, and tandem cell technologies — what changes in the field and why it matters.
Soiling
Measuring and monitoring soiling-related yield losses — sensors, methodologies, and cleaning interval optimisation.