External Lightning Surge Suppressors and Grounding
Appendix E
RADWIN 1000/2000/5000 User ManualVersion 2.5.30p3
E-5
The Transtector protection circuits shown in
below, utilize sili-
con avalanche diode technology. The unit consists of an outdoor rated
NEMA 3R type enclosure with easy mounting flanges, ground stud attach-
ment and easy wiring.
The ALPU-POE features RJ-45 protection circuits for the ODU-IDU data pairs
(pins 1,2 & 3,6) and DC power (pins 4,5 & 6,7 with the pairs bonded).
The unit is designed to be wall mounted. An optional set of bracket is avail-
able to allow a wide range of pole mount applications. A dedicated ground
stud is provided inside the unit that must be bonded to the nearest ground-
ing system (or Master Ground bar) for proper surge protection.
The system wiring is installed with RJ-45 type connectors that can feed
directly into the chassis without having to cut, splice or route through awk-
ward strain relief holes.
Figure E-5: Transtector’s Surge Suppressor
To mount the lightning protection devices:
1. Mount the device as close to the ODU as possible. Mount the unit so that
the cable connectors are at the bottom (to prevent water from penetrat-
ing), with the strain reliefs facing the ground.
2. Remove the cover by unscrewing the front of the unit.
3. Mount the unit to an outside surface using the two mounting holes.
4. Connect the ODU-IDU cable using the RJ-45 jack.
5. Connect one cable between the ODU and the suppressor using an RJ-45
jack.
6. Connect the suppressor’s ground stud to a grounding point. Use the
appropriate wire gauge and type, keeping the wire as short as possible,
less than 1m (3’), between the stud and the site grounding point.
