Lightning Testing and Surge Immunity Testing

Lightning Testing and Surge Immunity Testing

Indirect lightning strikes can have a detrimental effect on equipment and components. Lightning can jump from one item to another, resulting in side flashes, or it can travel through the ground and affect items further away from the strike location. Electronic components can be affected as the voltage and electromagnetic radiation surge through the cabling. Aircraft and its components are especially vulnerable to the effects of indirect lightning.

To protect components and systems from such events, surge immunity testing can be conducted. Testing can involve different injection techniques such as capacitance, ground current, pins, and transformers. Design techniques, including additional conductors, bond straps, and reduced bond impedance, can reduce the effects of indirect lightning.

For reliable protection from the unpredictable effects of indirect lightning, it is important to collaborate with an experienced lightning test lab. Surge immunity testing is a key part of the certification process for aviation equipment and associated electronics.