Lightning-related damage shows up far more often as electronic system failures, data loss, and production downtime than as structural harm. The lightning protection and grounding service protects the facility holistically against both external lightning strikes and internal overvoltages. A correctly designed grounding system is, moreover, the foundation of human safety and of the healthy operation of protective devices.
Miratek carries out work in this field under the TS EN 62305 series and the Regulation on Grounding in Electrical Installations. The protection level is determined through risk analysis; the external lightning protection system (air terminal or Faraday cage), down conductors, the grounding grid, and staged surge protective device (SPD) levels for internal protection are designed as a single system.
After execution, ground resistance measurements are taken and reported. At existing facilities, periodic measurement, regulatory compliance checks, and improvement works are carried out by the same team.
Technical Scope Summary
| Reference Standard | TS EN 62305 series and the Regulation on Grounding in Electrical Installations |
| External Protection | Air terminal, Faraday cage, and down conductor systems |
| Internal Protection | Staged surge protective device (SPD) applications |
| Grounding Types | Foundation grounding, ring grounding, and grounding grid design |
| Measurement and Reporting | Ground resistance measurement and regulation-compliant reporting |
| Application Areas | Industrial facilities, power plants, warehouses, and commercial buildings |
How We Work
Risk Analysis
The structure's location, purpose of use, and the systems inside are assessed to determine the required protection level.
Design and Engineering
A protection design covering the external lightning protection system, down conductors, the grounding grid, and the SPD stages is prepared.
Material Procurement and Installation
Conductors, rods, and protection equipment matching the design are procured and installed on site.
Measurement and Verification
Ground resistance and continuity measurements confirm that the system meets the design values.
Reporting and Periodic Inspection
Measurement results are reported in line with the legislation; a periodic inspection schedule is established.
Scope of Work
- Lightning risk analysis and protection level determination
- External lightning protection system design and installation
- Grounding grid, foundation, and ring grounding works
- Staged surge protective device (SPD) selection and installation
- Grounding measurements and compliance reporting
- Improvement works and periodic inspection at existing facilities
Frequently Asked Questions
Should we choose an air terminal or a Faraday cage?
The choice depends on the geometry of the structure, the risk analysis, and the systems to be protected. For the wide roof areas of industrial buildings, a Faraday cage is the common choice; air terminal solutions can be applied to standalone, tall structures. There is no right answer without a risk analysis.
How often should grounding be measured?
Grounding installations must be measured and reported periodically under the legislation; annual inspection is common practice at industrial facilities. Measurement reports are the official documents requested in both occupational safety audits and insurance processes.
Why are SPDs needed alongside an air terminal?
The external lightning protection system routes the strike to ground over the structure, yet overvoltages arriving over the lines can still reach electronic devices. SPD stages limit these internal overvoltages, protecting automation, IT, and control systems. Together, the two form a complete protection scheme.
