Nautel XR12, Operation And Maintenance Manual

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XR12 OPERATIONS AND MAINTENANCE MANUAL
PAGE XVI VERSION 3.1 2013-03-14
Safety Interlocks
The transmitter contains an electrical interlock, which is an external circuit that turns off the RF output
if any of its switches are opened.
Ac Disconnect Switch
Safe operation of the transmitter requires an ac disconnect switch. Lock the ac disconnect switch in the
disconnected (open) position during the installation process.
Equipment Safety
Electrostatic Protection
The transmitter’s systems are very rugged and resistant to damage. However, it is possible for damage
to occur because of high voltage electrostatic discharges during servicing. Train all service personnel to
ground themselves to bleed off any static charge before opening the transmitter or touching any
exposed components. Provide a grounding wand or known ground (e.g., a grounded metal table) that
personnel can use to discharge themselves.
Surge Protection
Surge protection is recommended for your entire site. However, even if you do not use a surge protector
on the service entrance to the site, you should install a surge protector in the transmitter’s ac power
feed to prevent over-voltage from entering the transmitter.
Lightning Protection
The transmitter is designed to resist lightning strike damage. However, intense or repeated strikes could
damage the transmitter. We recommend that you install lightning suppression on the antenna, tower
and feedline to reduce the effect of lightning strikes on the transmitter itself (and to protect the rest of
your site equipment and your personnel). For detailed information about lightning protection, see the
Nautel Site Preparation Manual, available from your Nautel sales agent, or online from the Nautel
website.