Nautel XR12, Preinstallation Manual, Page: 55 / 76

XR12 Transmitter Pre-installation Manual Accessories
Issue 0.17 2005-08-31 Page 10-1
Section 10: Accessories
This section describes accessories and optional equipment for the XR12 transmitter. Accessories
include the following:
• AC line surge protection
• Automatic antenna transfer control unit
• Automatic switching system - see page 10-3
• Dynamic carrier control unit - see page 10-3
• Spares - see page 10-4
• Extended warranty plans - see page 10-5
• Documentation - see page 10-6
• XR series on-site or factory training - see page 10-6
AC line surge protection
A surge protector panel is recommended for all equipment at the transmitter site. The surge
protection panel helps to protect the site from lightning induced voltage transients on the AC power
source or the antenna or ground system. Nautel offers an AC line surge protection panel, which is
suitable for use with the XR12 transmitter. (Various versions are available, depending on your AC
configuration and supply voltage.) However, you can use any surge protector with at least a 1,500
Joule per phase rating.
Connect the surge protector’s ground terminal directly to the station reference ground using a 10 cm
wide copper strap. Also connect the surge protector’s ground directly to the AC power supply
ground, the transmitter’s grounding point, and the common ground for the site. Ensure that the
common ground is isolated from any other sources of ground (for example, grounding rods not
connected to the station reference ground), to prevent lightning charges from bypassing the surge
protector and passing through the ground and into the site.
Place the surge protector as close as possible to the AC service entrance, minimizing both the
physical and electrical distance between the service entrance and the surge protector.