Everything You Need to Know About Mandatory High-Voltage Installation Inspections

High-voltage installations form the backbone of the energy supply in industrial and commercial environments. To ensure safety, reliability and compliance with legal requirements, regular inspections of these installations are essential. According to the General Regulations on Electrical Installations (AREI), these inspections are legally required in Belgium.

What is a high-voltage installation inspection and why is it mandatory?

A high-voltage installation inspection is a thorough check to ensure the system is operating safely and efficiently. High-voltage installations operate with very high voltages, meaning that defects or improper use can lead to serious hazards and damage.

Why are these inspections mandatory?

Legislation makes inspections mandatory to:

  • Minimise electrical risks, such as short circuits and overheating.
  • Ensure continuity of the energy supply.
  • Prevent damage to installations and property.
  • Comply with applicable standards and regulations.

Which installations are subject to mandatory inspections??

The obligation applies to all high-voltage installations in:

  • Industrial environments.
  • Commercial buildings.
  • Public institutions.

How is a high-voltage installation inspected?

An inspection is carried out by an accredited inspection body and involves several stages:

Preparation for the inspection

For a successful inspection, it is important to:

  • Have technical diagrams and documentation available.
  • Ensure the installation is free from unnecessary load during the inspection.

Inspection checkpoints

The inspector carries out a thorough check and eamines, among other things:

  • The general condition of the installation: Visible damage, wear or defective components.
  • Earthing systems: Checking for correct operation and sufficient resistance.
  • Switching systems and protection: Testing switching equipment and safety mechanisms for overloads and short circuits.
  • Insulation values: Measuring to ensure insulation comply with standards.
  • Thermography: Checking for hotspots using infrared technology.

Reporting and certificate

After the inspection, you will receive:

  • A detailed inspection report with findings and recommendations.
  • A certificate of conformity if the installation meets the requirements.
  • Action points for repair or improvements if any defects are found.

Why choose Artion for your high-voltage inspection?

At Artion, we offer:

  • Certified expertise: Our partners meet all legal requirements and standards.
  • Transparent rates: No surprises, only clear agreements.
  • Comprehensive support: From preparation to certification, we guide you through every step.
  • Focus on safety: We ensure that your installation operates optimally and safely.

With Artion, you choose certainty, reliability and a smooth inspection process.

Frequently asked questions about high-voltage installations inspections

Why is a high-voltage inspection  important?

An inspection minimises risks such as fires, electric shocks and system failures. It also ensures compliance with legal requirements.

Who is allowed to carry out these inspections?

Inspections can only be performed by certified inspection bodies accredited according to the relevant standards.

What happens if my installation doesn't meet the requirements?

If there are deficiencies, you will receive a report with action points that need to be addressed before a new certificate can be issued.

Quick info about high-voltage installations inspections

Is the inspection mandatory?Yes
Which installations are subject to the obligation?All high-voltage installations for professional use.
How long does an inspection take on average?3 to 6 hours, depending on the complexity.
How much does an average inspection cost?Between €400 and €1.000, depending on complexity. 
Note: Travel costs are additional.