Understand the interface decision

A lightning event can affect equipment through conducted and induced disturbances as well as direct attachment. The tower’s protection system and the electronic equipment protection boundaries are related but not identical. A general statement that the tower is protected therefore leaves important electrical questions unanswered.

Protection decisions depend on the actual earthing arrangement, available fault energy and equipment instructions. Treat the following as review inputs for the responsible electrical designer. Device names alone cannot establish a coordinated or compliant installation.

Put these inputs in the review record

Use a project-specific worksheet to capture the following information. For each entry, name the document, revision and person responsible for resolving any uncertainty.

• The tower lightning-protection design and its documented boundary. Identify the exact configuration and the supporting document.
• Controller, converter and sensor ports connected to field cables. Keep the design assumptions visible in the project record.
• Surge and bonding provisions at cable entries and equipment interfaces. Name the responsible reviewer and resolve any missing information.
• Inspection and replacement responsibilities after a suspected lightning event. State how this entry will be verified during acceptance.

Define the acceptance boundary

Accept the electronic protection design only when the relevant paths and equipment limits are addressed. Do not interpret a tower protection statement as a warranty that no electronics can be damaged. Keep the remaining exposure and maintenance requirements explicit.

The useful evidence is a coordinated plan linking structural protection, earthing and port-level protection. It should show where each supplier’s responsibility ends and where the site electrical designer completes the arrangement.