HVI Lightning Protection
Flexibility and maximum safety: Using the high-voltage-resistant, insulated HVI Conductors from DEHN, you can easily maintain separation distances. The possible uses of HVI Conductors are extremely diverse and suitable for every application. Only DEHN offers such a wide range and over 20 years of experience in insulated lightning protection.

Innovative HVI Conductors: Safety and design in perfection
The HVI (High-Voltage Insulation) Conductors developed by DEHN have a lightning-current-carrying core that is sheathed with insulating material. The required separation distances from other conductive parts of the building or electrical wiring and pipes are maintained without having to take any further measures.
HVI Conductors can also be installed behind the façade and can even be painted in the same colour as the building. For you, this means: optimum adaptation to the building architecture and many design options.
Types of conductor
The high-voltage-resistant, insulated conductors ensure that the separation distance to electrically conductive components is maintained. The range comprises four variants: HVI light, HVI light plus, HVI and HVI power.
When selecting the right conductor, the necessary separation distance is crucial:

Insulated lightning protection system as per IEC TS 62561-8
Our products for insulated lightning protection are thoroughly tested in accordance with the IEC TS 62561-8 standard and meet the requirements for components for an insulated lightning protection system. We offer you this safety both with our HVI components and with our products for the isolated air-termination system (such as DEHNiso combi sets and GRP products).
The advantages for you? Tested safety at the highest level and quality in accordance with international requirements. And not just for individual components, but for entire system solutions. HVI from DEHN – in use for you since 2003!
The available components of the HVI systems are tested as a complete system. DEHN has neither planned for nor tested the combination of our system with other components available on the market. If third-party system components are nevertheless used in the planning or installation of our HVI system, this will invalidate the warranty claim in accordance with the provision in our General Terms and Conditions and may adversely affect the functionality of the entire HVI lightning protection system.
HVI – all installation variants tested in accordance with IEC TS 62561-8
HVI Lightning Protection
HVI Lightning Protection is safe, easy and flexible to install. Before this happens, two important steps need to be taken:
Calculating wind load
The wind load is particularly important when planning and installing air-termination systems as part of a lightning protection system. Complex building structures require customised air-termination systems. Here you can find out how to calculate the wind load in five steps.
Maintaining separation distances
Maintaining the separation distance prevents dangerous flashovers between earthed parts of the building and the lightning-current-carrying components of the lightning protection system in order to avoid sparking and any associated personal injuries, property damage or fires.
Downloads
Isolated and insulated lightning protection
Correct design and dimensioning
HVI light plus
The all-rounder for insulated lightning protection
HVI Check
Dielectric withstand test for HVI Conductors
Test report
HVI Lightning Protection system inspection
Creating equipotential surfaces
Formation of equipotential surfaces as a reference plane for calculating the separation distance
Our services
We can provide support for your project from the planning to the implementation and beyond. Take advantage of our wide range of practical tools and services.
Design the external lightning protection and earthing systems for your project in accordance with DIN 18014 and IEC 62305-3. The program automatically creates a bill of materials for further use.
We create the entire lightning protection concept – from the risk analysis and earthing simulation to budget planning – all precisely tailored to your project, and standards-compliant.
Use the DEHNacademy to keep you and your team up to date as well!
Get an overview of our range of courses now.