User Manual

ii Lightning Strike and Surge Protection
Important Safety Notices
Lightning Strike and Surge Protection
This device should be properly protected against lightning strikes and power
surges.
For recommendations on the design and installation of lightning-protection sys-
tems, please see the following standards:
• LPI-175—Standard of Practice for the Design-Installation-Inspection of
Lightning Protection Systems, issued by the Lightning Protection Institute
• NFPA 780—Standard for the Installation of Lightning Protection Systems,
issued by the National Fire Protection Association
• UL 96A—Standard for Installation Requirements for Lightning Protection
Systems, issued by Underwriters Laboratories (UL) Inc.
Protection System Design
Additionally, the system design must include:
• Grounding system—designed as a result of soil resistivity analysis and
including the following considerations:
– Local Standards compliance as listed above
– Available space/location
– Use of suitable grounding rods
• Down conductor route—should avoid other services (parallel routing not
closer than 2m or 80 inches), not exceed accepted bending angles (500
mm or 20 inches radius), minimize conductor length, and meet or exceed
securing requirements (fixings not more than 1m (or 40 inches) apart for
the top 10% of the route and 2m (or 80 inches) for the remaining 90% of the
route.
• Terminal—use a terminal suitable to environmental conditions that meet or
exceed the mast height and protection level requirements.
CAUTION: ALL WORK MUST BE COMPLETED BY CERTIFIED
INSTALLERS.
CAUTION: INSTALL THE PROTECTION SYSTEM DURING STORM-
FREE PERIODS.
!