Lightning Protection Earthing Resistance Testing

 LIGHTNING PROTECTION EARTHING RESISTANCE TESTING – ENSURING SAFETY, COMPLYING WITH REGULATIONS

The Industrial Equipment Safety Inspection Joint Stock Company (SIE) provides lightning-protection resistance testing and earth-resistance measurement services for grounding systems, in accordance with TCVN 9385:2012 and applicable legal regulations. With a team of experienced technicians, the company helps businesses proactively prevent the risk of fire, explosion, and property damage caused by lightning, ensure human safety, and comply with legal requirements.

1. What is a grounding (lightning protection) system?

• Consists of steel rods or copper-coated/copper-plated steel rods driven deep into the ground, connected into an appropriate grounding network.
• Uses copper rods, copper bars, or copper wire to extend service life and improve lightning-protection effectiveness.
• Connections made using exothermic welding to ensure good conductivity and corrosion resistance.
• Must meet requirements for low overall resistance, effective dissipation of lightning energy, and resistance to corrosion and tampering.

2. What is lightning-protection resistance testing?

• An inspection activity that checks the grounding systems ability to conduct and dissipate electrical current (from lightning).
• Helps ensure the system functions properly, protecting equipment and structures.
• Benefits:
  • Ensures safety for people and property.
  • Reduces the risk of fire, explosion, and equipment damage.
  • Complies with legal requirements on fire prevention and electrical safety.
  • Extends the service life of the grounding system.

3. Legal basis

• Decree 136/2020/NĐ-CP on fire prevention and fighting.
• TCVN 9385:2012 – Lightning protection for construction works.
• TCVN 4756:1989 – Code of practice for grounding and neutral connection of electrical equipment.
• Periodic inspection required at least once every 12 months.

4. Lightning-protection resistance testing process

• Inspect the lightning rod, conductors, and connection joints.
• Locate the grounding conductor and clean connection surfaces.
• Use specialized earth-resistance measuring equipment.
• Set up connections according to technical guidelines.
• Read and analyze results, and prepare the inspection report.

5. Commitments from SIE

• Officially designated and licensed for inspection by both the Ministry of Labour, Invalids and Social Affairs and the Ministry of Industry and Trade.
• Team of technicians with in-depth training and many years of experience.
• Transparent process, compliant with standards, accurate results.
• Fast, on-site service at reasonable cost.

Contact us now for free consultation and to schedule lightning-protection resistance testing — helping keep your facility safe and fully compliant with legal requirements.