How Lighting Protective Vents are Tested for Effectiveness

2025-05-26

Leave a message

LPV Testing Methods

Lightning Protective Vents (LPVs) Testing Methods

Visual Inspection: The initial step involves checking for physical damage, corrosion, or loose connections on the LPVs. Damaged components may compromise the vent's ability to conduct lightning safely.
Electrical Resistance Measurement: A qualified technician uses a specialized ohmmeter to verify the grounding system resistance is within the acceptable range (usually less than 5 to 10 ohms), as high resistance can impede lightning current dissipation.
Surge Simulation: Using a lightning surge generator to apply controlled electrical surges similar to lightning strikes. Monitoring equipment records how effectively the vents redirect and dissipate surges.
Bonding Integrity Test: Periodic testing of connections between LPVs and other metallic building parts to confirm a continuous electrical path for lightning discharge.