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Di-LOG SL550 Advanced CAT III 1500V DC Solar PV Test Kit
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The Di‑LOG SL550 Solar PV Test Kit is a complete, professional solution designed for the installation, commissioning, inspection and maintenance of modern solar photovoltaic systems. Combining a high-precision solar irradiance survey meter, a CAT III 1500V DC True RMS clamp meter and a set of robust MC4 solar test leads, the SL550 provides electrical and environmental testing capability in one portable, easy-to-use kit.
Engineered for use on both domestic and commercial PV installations, the SL550 enables accurate system verification through measurement of key parameters including solar irradiance up to 1400W/m², module surface and underside temperature, DC voltage, AC/DC current, power and energy. Integrated survey functions, including an inclinometer and magnetometer compass, allow installers to assess roof pitch and array orientation, ensuring optimal system positioning and performance.
The kit supports IEC 62446-1 compliant testing, the international standard for the documentation, commissioning and inspection of grid-connected PV systems. This ensures that solar engineers can carry out correct installation checks, validate system performance and produce accurate test data for compliance and reporting.
At the core of the electrical testing capability is a high-performance clamp meter with a CAT III 1500V DC / CAT IV 600V safety rating, making it suitable for modern high-voltage PV arrays. True RMS measurement provides reliable readings on both linear and non-linear loads, while measurement ranges up to 1500V DC and 1000A AC/DC support testing across a wide range of applications. Advanced diagnostic functions include power and energy analysis (kW, kVA, kVAR and kWh), harmonic analysis for power quality assessment, inrush current capture and peak detection for system startup analysis, and LowZ mode to eliminate ghost voltages.
The SL550 is supplied with professional-grade CAT III 1500V MC4 solar test leads, enabling safe, secure and efficient connection directly to PV modules for open circuit voltage testing and system checks. The leads feature durable silicone insulation, high ingress protection for outdoor use and integrated tools to support fast and safe disconnection.
Designed for reliability in demanding environments, the SL550 features a rugged construction, clear backlit/full-colour display for easy reading in all conditions, and Bluetooth connectivity for data logging and reporting via a mobile app. This allows users to capture, store and share test results quickly, improving workflow efficiency and documentation accuracy.
Overall, the SL550 offers solar installers and engineers a dependable, all-in-one testing solution, combining environmental measurement, electrical testing and advanced diagnostics to support safe, compliant and efficient solar PV system installation and maintenance.