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Grounding. Bill Hider, N3RR. Grounding = Controlling Lightning!. For Protection!. Personnel Equipment House/Facility. Specifically, Protect What @ N3RR?. Personnel in the shack The Ham Shack/house Electronic equipment in the shack (TX, RX, AMPS, PCs, and the like) - PowerPoint PPT Presentation
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Personnel in the shack
The Ham Shack/house
Electronic equipment in the shack (TX, RX, AMPS, PCs, and the like)
Electronic and Electrical equipment elsewhere in the house
Specifically, Protect What @ N3RR?
Rotors and their controllers
Antennas
Tower-mounted relay switchers
Tower
Technical Information/Documentation
www.polyphaser.comhttp://www.lightningEliminators.com/
Many others. Search for “Lightning”
134 Ft Tower
52 FtTower
Tel&AC
SPG Box
HouseHamShack
=
==
=
=
8 Ft ground Rod w/clamp
Elevated guy anchor
1.5 Inch copper strap
# 4 wire
TELCO and AC power entry
= Common Tie-pointKEY
125 feet
125 feet
125
feet
8 Ft ground Rod w/Cadweld=
Not to Scale
N3RR – Grounding @ TowerLightning protectors:http://www.polyphaser.com/
Reference site:www.erols.com/n3rr
Steel Hoffman Boxeshttp://www.hoffmanonline.com/:Andrew Ground Kits
http://www.andrew.com:
PolyPhaser Lightning Protectors:
N3RR – Grounding @ Tower
Not shown (on the tower):MOVs at each Ring Rotor – from each control wire to groundMOVs at the 80 Meter antenna relay box– from each control wire to ground
Andrew Ground Kit from each coax to ground as close to each antenna as possible
134 Ft Tower
52 FtTower
Tel&AC
SPG Box
HouseHamShack
=
==
=
=
8 Ft ground Rod w/clamp
Elevated guy anchor
1.5 Inch copper strap
# 4 wire
TELCO and AC power entry
= Common Tie-pointKEY
125 feet
125 feet
125
feet
8 Ft ground Rod w/Cadweld=
Not to Scale
Review
N3RR – Grounding – SPG @ HouseOther Connections
Beverage coax entry & left side copper ground strap: Copper strap grounding to 8
ft copper ground rod:
N3RR – Grounding – SPG @ HouseOther Connections
Other end of copper ground strap (after 3 ground rods):
House
SPG Box
(External)
TELCO& Electric
Ham Shack
SPG Wall PanelAll equipment grounds “home-run” to this SPG panel.All coax passes through this panel with “double-barrel” feed-through connectors.
N3RR – Grounding – Results
Since November 1994, one IC-781, IC-4KL, 5 Ring Rotors,One Hy-Gain rotor, 4 Packet Cluster Radios, 2 PCs,
with all antennas hooked up.
Only one failure due to elecrical shock: I left the ground wire off of a Ring Rotor controller durning a period of 1 week for maintenanceand a nearby lightning strike burned out an internal Zener diode.
NO OTHER FAILURES IN OVER 10 Years CONTINUOUSLY CONNECTED!