Distance meter Benning LD 40 40m BENNING BG050500

Professional photovoltaic installation testing meter – Benning LD 40

This advanced Benning LD 40 meter is an indispensable tool for installers and service technicians of photovoltaic systems, as well as for authorized experts in this field. It enables a comprehensive examination of PV installations, ensuring safety and compliance with standards. The device checks the continuity of grounding connections, measures open-circuit voltage and short-circuit current, and also insulation resistance – all in one handy device.

The meter has been designed with ease of use in mind. Automatic test procedures minimize the risk of errors, and a warning about reverse DC polarity further increases work safety. Measurement results can be easily transferred to a report via the USB interface and software for MS Excel. The integrated real-time clock automatically adds the date and time to each saved measurement, making documentation easier.

Features and capabilities

Benning LD 40 offers a wide range of measurement functions:

• Protective conductor resistance measurement: in the range of 0.05 Ω - 199 Ω, allowing for an accurate assessment of the condition of grounding connections.
• Insulation resistance measurement: from 0.2 MΩ to 199 MΩ with adjustable test voltage (250 V, 500 V, 1000 V DC), guaranteeing a precise determination of the condition of cable insulation.
• Open-circuit voltage measurement: up to 1000 V DC, allowing you to check the correct operation of photovoltaic modules.
• Short-circuit current measurement: up to 15 A DC (without risk to the user), allowing you to assess the efficiency and safety of the installation.
• Load current measurement: from 0.2 A to 40 A AC / DC (using optional CC 3 clamps), expanding the diagnostic capabilities of the device.
• Functional test: by measuring current up to 40 A AC / DC (with BENNING CC 3 clamp adapter).

Additionally, the device has a built-in memory for 200 measurement results and the ability to communicate wirelessly with the BENNING SUN 2 device (for measuring solar irradiance and temperature). The LCD display with backlight ensures readability even in difficult lighting conditions. Automatic shutdown after 60 seconds saves battery power.

Safety and compliance with standards

Benning LD 40 has been designed with user safety in mind. The ability to safely measure even when energy is supplied by the photovoltaic system is a key advantage of this device. It meets the requirements of EN 62446 (VDE 0126-23), which confirms its high quality and reliability. The device is equipped with measuring probes, crocodile clips and MC4 measuring cables – everything you need to get started is included in the set.