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HIGH VOLTAGE ARRAY
(monitored electric fence)
DESIGN SUGGESTION
for
STANDARD CHAIN LINK FENCING

Using materials and components
that are easily available
and
locally purchased at minimal expense.
Questions? Just call and
Ask Dale Barnes, Engineering/Sales
+1-814-321-5333


We worked with a local security dealer in the Tampa Bay area and helped them to setup a high voltage array at a boat and RV storage facility. This is a short description of how we helped a little with this project, and how it came together. We have included only pictures that were approved by the owner.

The design parameters included prevention to cutting through the chain-link fence and carrying off an outboard motor or similar theft. The security array will prevent cutting through, and/or climbing over the chain-link fence, effectively eliminating all un-authorized egress.

If the chain link is cut and shorts out the electric array, an alarm will be triggered and the responding personnel will know if it is cut on the north, east, south, or west side. If the cut chain-link fence is pulled away and does not short out the electric array, the trespasser will get shocked and cannot get through the high voltage array without setting off the alarm.

There are four fence sections and four alarm zones.

For a short video of the installation, please click on http://youtu.be/KocZw0emlNU

Vertical Supports We used standard 1-1/2 inch schedule 40 PVC water pipe purchased at Lowes for the vertical support of the array. We utilized one length of pipe for each vertical support for the chain link fence as you see.

 

  click on the picture to enlarge

The pipe was cut to eight foot lengths to conform to the city fence height restriction.


Click on the picture to enlarge


click on the picture to enlarge

Standard heavy duty muffler clamp

The PVC pipe was clamped to the existing chain-link fence supports using standard muffler clamps that were purchased at NAPA auto parts.

click on the picture to enlarge

Each clamp was drilled out as shown, to provide for a hex head bolt where the head of the bolt fit into the "U" of the clamp. We found that the head of a 7/16" bolt fit perfectly.
.


The PVC pipe was drilled out with a 7/16" hole and attached to the muffler clamp.

 

                                    click on the picture to enlarge


click on the picture to enlarge
Using the muffler clamp assemble, the PVC pipe was attached to each chain-link fence post. This was done for 216 posts with 2 clamps for each PVC post.

We used galvanized steel pipe with 3 clamps for the corners to withstand the tension from the wires.

The 16 AWG aluminum-clad bare conductors are stretched from corner to corner and supported by #10 x 3/4" self-tapping screws with washers which were simply screwed into the PVC pipe.

Each PVC post was capped and drilled for an insulator at the top carrying the top wire..

The top conductor is connected to earth ground for the same reason that utility companies have a grounded conductor strung across the tops of their distribution lines.

The top conductor, although grounded, makes the array very intimidating.


click on the picture to enlarge


click on the picture to enlarge

The finished array completely encloses
the perimeter of the storage yard.

The perimeter was done with four separate (4) fence sections to zone for North, East, South and West.

1. If any single fence section goes down for any
    reason, the other fence sections are still hot.

2. The response personnel will be able to come
     directly to the side of the yard where the intrusion
     has occurred.

Each fence section control is connected to the office security panel with 4 pairs of standard alarm wire.

1. (50 milliamps) 1 pair to maintain the voltage on
     the fence energizer battery.
2. (30 milliamps) 1 pair to power the Fence Hawk
     with a connection similar to a standard motion
     detector.
3. 1 Alarm pair with the EOL resistor
4. 1 Low Voltage pair also with an EOL resistor 

 


click on the picture to enlarge


click on the picture to enlarge

Each fence section (zone) is controlled
by a locked NEMA-4X enclosure to
ensure the security of the perimeter.

The High Voltage is connected to the fence section and returned to be monitored by the Fence Hawk.

The whole zone can be turned on and off with the keypad of the security control panel in the office.

For most applications, the perimeter array
operates on a 24/7 basis and is handled
by the security panel the same as a
smoke detector (fire) zone.

For complete assembled kits, please go to our corporate site at www.IntelligentFencing.com

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© 2006-2012
Intelligent Fencing Systems, Inc.
Brandon, Florida
United States
813-315-8082