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The TerraGrif K2MI Duo 18 (Art.-No. 2003542) is a compact, high-quality solution from K2 Systems GmbH for potential equalization and grounding of solar module frames in combination with K2 mounting systems. It was specifically developed for integration into the **K2 Dome 6** and **Dome Zero** flat roof systems. This plate creates a secure connection between the module frame and the substructure, which is essential for correct electrical function and lightning protection.
Thanks to its robust stainless steel material (grade 301 TA), the plate is extremely corrosion-resistant and reliable in the long term. It can be easily integrated into existing K2 mounting setups, such as alongside **K2 roof hooks**, within the **K2 rail**, or in combination with **K2 Minirail**. This contributes to a securely mounted photovoltaic system while meeting lightning protection and electrical regulations.
The TerraGrif K2MI Duo 18 is specifically designed for photovoltaic mounting systems where potential equalization between the module and substructure is required—such as for integration into lightning protection or ensuring electrical safety. Its compact design makes it flexible to use without requiring much space.
Technical Specifications
Material: Stainless steel 301 TA (untreated)
Application: Potential equalization / grounding between module frame and mounting system
Compatible mounting systems: K2 Dome 6, Dome Zero (flat roof systems)
Weight per unit: approx. 0.003 kg
Type designation: K2MI Duo 18 (potential equalization plate)
Features & Benefits
Secure potential equalization: Electrically connects module frames with the mounting system to dissipate currents and meet safety requirements.
Lightning protection integration: Allows the integration of the PV system into lightning protection systems with a **K2 lightning protection clamp**-like function.
Corrosion-resistant: Stainless steel 301 TA ensures high resistance to weather influences.
Compact design: Minimal space requirement, easy installation even in confined areas next to **K2 roof hooks** or **K2 rail**.
Compatibility: Seamlessly integrates into various K2 systems like Dome 6 / Dome Zero / K2 mounting systems in general.
Future-proof: Complements any **K2 photovoltaic** installation as an addition for secure electrical connection and lightning protection.
Recommended Applications
The TerraGrif K2MI Duo 18 is ideal for installations on flat roofs realized with the K2 Dome 6 or Dome Zero system. It is used when continuous potential equalization between modules and substructure is required. This is particularly relevant concerning compliance with electrical standards and safety regulations in the area of lightning protection.
Installation Instructions & Compatibility
During installation, it must be ensured that the plate is correctly integrated into the **DomeClamp module clamps** and provides good metallic contact both to the module frame and to the rail or system. In the installation manuals of the **D-Dome 6 system**, it is listed as an optional element in the chapter "TerraGrif – Potential Equalization".
The TerraGrif K2MI Duo 18 is not suitable for all K2 systems—it is specifically designed for flat roof systems (Dome 6 / Zero). In pitched roof systems, it must be checked whether alternative solutions or clamps with potential equalization can be used.
