PolyTech has expanded its lightning expertise

We are thrilled to announce that GLPS is now part of PolyTech. This means that PolyTech can now – from start to finish – deliver everything required from a lightning protection project for the most advanced wind turbines while ensuring a faster


Benefit from our experience -
theoretically, experimentally
and practically.

Engineering, Testing and Installation

We offer consultancy and engineering services within lightning protection and performance improvements. Whether your challenge is a matter of selecting the right material or geometry for a given application, integration of subsystems into a larger context or complete LPS design and coordination, you will benefit from our experience - theoretically, experimentally and practically.

By utilising our engineers and technicians, you are certain to get access to the most recent knowledge on lightning exposure and protection and can gain solutions designed and installed in compliance with the lightning environment, relevant international standards and good practice.

Below you will find our specific engineering and technical installation and inspection services. Please do not hesitate to contact us, if you do not find exactly what you are looking for.

Earthing systems are essential to any electrical installation and lightning protection system. We have the know-how, experience and installation capabilities to perform earthing system in any situation.

A GLPS earthing rod system is generally made with deep-drawn copper wires without any joints to secure resistance stability and long lifetime. The special system provides a very low galvanic corrosion.

Estimated or fixed prices can be given for any application with any resistance requirement. For larger installations, earthing systems are often integrated into the building foundations using the concrete and reinforcement iron in combination with copper wires, special clamps and earthing termination points. A horizontal system, such as this, forms a perfect reference earthing system for a modern installation for achieving good EMC conditions and significantly higher immunity to transient overvoltages and lightning surges.

In areas with high soil resistivity, special methods must be utilised in order to achieve useful resistances and/or impedances. We have the competences to computer simulate the earthing system to determine the best layout - and our installation teams can make it happen in reality.

Standards and codes require equipotential bonding as a fundamental part of any electrical installation. Any extraneous conductive part must be connected to the main bonding system and, depending on the functionality of the installation, building or plant, supplementary bonding may be required.

Hospitals, pharmaceutical or chemical plants, banks and data centres or military installations are just a few examples of installations where equipotential bonding is essential to secure safe and stable operation.

In any lightning protection system, equipotential bonding is key to establishing protection against the indirect effects of lightning as well as securing electromagnetic compatibility (EMC) in the installation

The infield installation department has special knowledge in equipotential bonding from numerous projects, and have the engineering and installation capacity to undertake large project assignments.

Protecting buildings and living beings from lightning strikes is one of our core competences. Our infield installation team has the manpower; the know-how and the tools necessary to perform advanced lightning protection system on complex building and plants.

DS/IEC 62305 is a series of standards describing methods to follow in order to achieve efficient protection.

Any lightning protection system contains the following subsystems:

  • Air termination system that covers the uppermost part of the building with mesh or rods or a combination of both. The air termination system must cover the entire building and mainly its extremities.
  • Down conductor system ensures that the lightning current can be divided and conducted safely to earth
  • Equipotential bonding systems securing voltage equalisation between the outer lightning protection system and the internal installations and building structures.
  • Earthing systems forming the earthing termination electrode to the surroundings as well as an internal distribution of the earthing potential securing low step and touch potentials.
  • Surge protection in the electrical power and control installations ensuring that overvoltages are kept on a low level so not to destroy sensitive and critical equipment.

Any lightning protection system is documented by resistance measurement and regular maintenance is required.

Our specially trained technicians regular perform inspection and maintenance on lightning protection systems. During the inspection, all parts of the systems are visual checked for any loose connection, corrosion or changes in the building requiring adjustments in the lightning protection system. The electrical continuity in the system is measured with low-resistance ohm-meters and documented in inspection forms for comparing change in resistances with previous inspections.

Inspections of earthing system are performed with regular intervals to verify the resistance and functionality.

In areas with anti-static requirements, either due to risk of explosion or protection of sensitive equipment, all tools, ESD-installations earthing systems etc. must be checked annually. Our specialists are capable of performing and document such inspections.

We offer service contracts for inspection and maintenance, which secures that essential inspections are performed as planned and not forgotten. Each inspection is documented electronically and check- sheets are stored and secured. In case of damages to the installation, these damages will either be repaired immediately or reported for later corrective.

In case of lightning strikes to a building, our specialists perform a damage evaluation to define the root cause and to give recommendations for lightning protection measures.


We provide complete lightning solutions design projects that meet the requirements of professional manufacturers and that complies with the newest industrial standards and guidelines. Our engineers have many years of experience in the field of lightning protection and participate actively in international standardisation comity work, ensuring that all solutions follow relevant legislation and are based on good, sound practice.

Based on the project scope, a project team is defined including the necessary competences and ressources to complete the design assignment within the agreed time and budget. A fast way to completion is key to any project manager.

All design projects are managed meticulously following project management methods with transparent resource management and regular progress reporting.

The utilisation of the lightning laboratory is a key advantage. Here we have close access to verification at the early stages of all processes, which secures a high likelihood of a successful final verification and third party certification.

We have developed various design-tools for numerical modelling and simulations. Generally, all electrical or electro/thermal phenomena, such as lightning, can be modelled in different levels of detail in order to predict material behaviour on component level, component behaviour and impact on system level.

The tools are used comprehensively for:

  • Designing blades for wind turbines
  • Specifying earthing systems
  • Assessing current distribution in lightning protection concepts
  • Current and voltage distribution in power and control systems subjected to direct and indirect lightning

Geometries ranging from varnish layers on machine copper windings (um range) to wind farm topography (km range) have been considered. The tools based on 3D/2D FEM analysis and EMTP models in frequency and time domain have been verified by comprehensive testing, and published in various scientific papers.

Lightning and switching transient analysis

We will model your installations and guide you through a lightning and switching transient analysis in order to ensure that the component voltage level is never exceeded.

We operate the world’s largest test facility for direct lightning effect testing. Here we utilise direct effect testing in accordance with various industrial, military, and aerospace standards. Our test engineers have over the years performed a wide range of verification and certification tests on coupons/panels, sub-systems, and full vehicles like wind turbine nacelles and blades. Nothing is too small and nothing is too large for the application of realistic lightning impacts.

We conduct the following tests:

  • Initial leader attachment test: determines likely lightning attachment points on the test sample.
  • Swept channel attachment test: predicts possible puncture locations in or close to the sweeping area.
  • High current arc entry test: assesses the level of damage of the possible lightning strike attachment points.
  • High current conducted current: assesses the impact of electro dynamical forces and heating.
  • Electric and magnetic field immunity test: verifies the performance of electronic equipment and installations close to the lightning strike.
  • Power frequency high current test: verifies the performance of equipotential bondings and the current carrying capability of different conductor geometries.
  • HVDC tests: used for non-destructive verification tests and for simulating static discharge

Buildings, wind turbines and other tall installations are exposed to lightning strikes. Therefore, lightning risk analysis and lightning risk management are key factors in ensuring the safe and reliable operation of these and all mission critical installations. In close collaboration with you, we perform lightning risk assessments on different levels and define the risk management strategy.

The lightning risk analysis includes:

  • How frequently lightning damages will occur
  • How severely lightning strikes will impact safety
  • How severely lightning strikes will impact O&M costs

The risk of being struck by lightning is the first thing to consider by exploiting numerical tools (FEM) along with strike density data from lightning location networks. Such analysis can be conducted on entire wind farms or other large installations to identify areas exposed to direct strikes of different amplitudes.

We can arrange and tailor training sessions to your specific needs.

  • Lightning Risk Assesment
  • Lightning protection in general
  • Lightning Protection of wind turbines
  • Advance Wind turbine Blades
  • Surge Protection
  • EMC Management

GLPS is performing annual or biannual lightning protection inspections on wind turbines and other complex structures in accordance with IEC 61400-24 and/or IEC 62305-1

Based on an agreed inspection protocol - either developed by GLPS or the Owner, the inspection is performed by visual inspection and resistance measurements.

During the inspection all parts of the lightning protection system is inspected. In case of wear and tear the worn components are replaced. In case of larger issues, this will be reported and the mitigation scheduled.

After any inspection GLPS is submitting a Technical Inspection Report. 

The various services can be acquired as individual assignments or as parts of a larger project focusing on tailoring the best lightning protection solution possible.

We have experience in project partnership and can either participate with engineering resources or perform the project management including customer resources. In case of specific assignments, we can take turnkey responsibility for a lightning protection project including installation and documentation.

Let’s talk about how we can
protect your business.

+45 7026 0211