T107 Weather Station
2.1.3 AC Power Installation
a) The currently-available AC power option includes a 100 to 240 Vac to 24
Vdc power supply (see note below). The power supply should be mounted
inside a user-supplied junction box according to local electrical codes.
Dangerous electrical accidents may be avoided by locating the transformer
remotely and burying a low voltage line to the station. The low voltage
will carry up to 500 feet on an 18 AWG power cable.
b) Shut off 110 Vac power at the main breaker. Connect the primary leads of
the power supply to the 100 to 240 Vac power source. Connect a two-
conductor cable to the secondary terminals of the power supply. Route the
cable from the power supply to the ET Enclosure according to local
electrical codes.
c) Splice the incoming two-conductor cable to the power cable provided with
the station. Use the direct burial splice kit when splices are in a valve box
or buried.
d) Connect the power plug to the connector marked “Power” on the back of
the enclosure. See FIGURE 2-21.
The AC power supply option for older T107 stations included a
120 Vac to 16 Vac step-down transformer instead of the 100 to
240 Vac to 24 Vdc power supply. Appendix E provides
information for installing an AC power system that includes the
step-down transformer.
The splice and wire nut must be completely immersed into
the silicon gel inside the splice tube to be waterproof.
2.2 Tower/Pole
2.2.1 Supplied Components
(1) Upper Tower Section (Tapered)
(1) Lower Tower Section
(6) 5/8 inch Washers
(1) 12 ft 10 AWG Ground Cable
(1) White Tower Cap
(1) 20 ft communications cable (phone or short haul modem)
(1) 20 ft power cable (for AC option only)
2.2.2 Installation
Attach the tower to the base as shown in FIGURE 2-4.
1.
Dig a hole close to the concrete base to access the lower conduit opening.
From the hole, trench to the power and communications sources. Remove
the duct tape from both ends of the conduit.
2.
Remove the template. Slide the bottom and top half of the pole pieces
together. This is a permanent connection and cannot be taken apart once
they are put together. If a little more force is necessary to put the two
halves together, then get a small block of scrap wood and a hammer. Set
the pole upright on a grassy area or have someone hold the pole
NOTE
CAUTION
13
Summary of Contents for T107
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Page 49: ...T107 Weather Station FIGURE 2 31 Slide Antenna Bracket U Bolt around Back of the Pole 41...
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