locating break in Invisable fence

   / locating break in Invisable fence #1  

hvac1

Member
Joined
Mar 29, 2006
Messages
36
Location
southeast ct
Tractor
kubota
I have an invisable fence brand fence for my dog and have a break in the line somewhere. I know there is some way to locate the break using a transister radio but don't remember the procedure. Can anyone help? The line is partially buried and I have searched for breaks but it is a pain in the butt. It is about 3 acres of area.
 
   / locating break in Invisable fence #2  
Put on your dog collar and walk the fence location. It will move your pain from your butt to your neck, but when it quits zapping you, you have found your break.:D Sorry, I don't have a clue. Can you just watch your dog and see where he gets out?
 
   / locating break in Invisable fence
  • Thread Starter
#3  
BTDT said:
Put on your dog collar and walk the fence location. It will move your pain from your butt to your neck, but when it quits zapping you, you have found your break.:D Sorry, I don't have a clue. Can you just watch your dog and see where he gets out?
Funny,real funny. When there is a break the fence stops working all together.
 
   / locating break in Invisable fence
  • Thread Starter
#5  
BTDT said:
Sorry, again, I didn't understand how they work. I looked them up on their website, this is what they recommend. Hope this helps.

https://www.invisiblefence.com/customer_support/customer_FAQs/system.asp
They will come out for $65 per hour and look for the break. When I first had it installed 15 years ago the original company told me how to find a break. Now it is a big secret and only they can find the problem. I have always been able to find the breaks fairly easy but this time not so. I just have to trace all the exposed wire. I was hoping to not have to walk through poisen ivy and crap to find it. If needed I will run all new wire.
 
   / locating break in Invisable fence #6  
With a user name like yours can I assume that your in the HVAC field ?

If so then I'll also assume you have a pretty decent Fluke or equivalent meter ?
 
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   / locating break in Invisable fence #7  
I just have to trace all the exposed wire.

I thought it was supposed to be buried, hence the name "Invisable Fence". But sounds like you've gotten pretty good service out of it if it's lasted for 15 years.
 
   / locating break in Invisable fence #9  
Willl said:
With a user name like yours can I assume that your in the HVAC field ?

If so then I'll also assume you have a pretty decent Fluke meter ?

Hey, what about Fieldpiece or UEI? :)
 
   / locating break in Invisable fence #12  
I know nothing about these systems but I know that you can detect a short in an electric fence by driving down the fenceline with your radio set on am and when you get by the shorted area you will hear it clicking in your radio. That transmitter will probably transmit a tone than can be picked up on an am radio and when you get to the broken spot the tone will stop. I would experiment with an am radio at the beginning of the wire going through the frequencies and see if I could pick up a signal from it on the radio. If it works, let us know.
 
   / locating break in Invisable fence #13  
There was a thread on fences a while back where someone explained how to find the break with a radio. If I remember right he went into a little detail for us. Last summer maybe ? Try a search for underground dog fences.
 
   / locating break in Invisable fence #14  
450EXC said:
There was a thread on fences a while back where someone explained how to find the break with a radio. If I remember right he went into a little detail for us. Last summer maybe ? Try a search for underground dog fences.

ya something about an AM radio and listening for the "right kind of" static
 
   / locating break in Invisable fence #15  
If you have a buddy that works for the telephone company, I bet he would have access to what they use for finding breaks in underground telephone lines. Not sure it would work but sounds logical?
 
   / locating break in Invisable fence #16  
Y'all almost got it right.
First you have to put a choke coil ( radio shack has them) in series with the transmitter so it will transmit the beeping noise on am band and just walk the fence line till it quits then look for your break.
I am at work so I don't have my manual, it is in my manual under troubleshooting and I see Innotek no longer list it in their online manuals.
 
   / locating break in Invisable fence #17  
Assuimng you have a multimeter, try this.

Disconnect the fence wires from the electric fence module. Ground one of the fence wires.

Connect the other fence wire to a car battery, or car battery charger Plus side. Connect the negative of the battery or charger to a long wire that will reach any point on the fence wire. Connect the other end of this wire to your multimeter negative.

Set your meter to DC volts. Take the positive of the multimeter to a probe that you can stick in the ground. Take and probe near the fence wire. When you reach the highest voltage then you are near the break. I have never tried this, but if all else fails this is worth a try. If the voltage readings go to 12 volts to soon, try putting a resitor (try 1000 ohms as a guess) between the meter plus and minus leads. It might help to wet down the area around the fence wire to increase the conductivity. I hope this helps. This assumes that there is some connection between the broken end of the wire and the earth.
You can also cut into the wire at accessible locations and see where it shows a voltage reading. I would start in the middle and then cut each area in half. You should get real close with this.

My other thought is that the wire is 15 years old and it might be a good time to replace it.
 
   / locating break in Invisable fence #18  
I found my owners manual for my fence, it is an Innotek brand. Here is what is says.

1.Unplug power from transmitter.
2. Disconnect the boundary wire from the loop terminals on the wall transmitter or optional lightning protector.
3. Bend the leads of the RF choke into the shape shown in the figure....(figure shows to attach one wire one each loop wire ( parallel) and have the coil wires 1/4" apart. Choke Coil is a Radio Shack part # 273-102)
4. Plug wires back in to transmitter and plug transmitter back in.

Set a portable radio to Am-60 or AM-600 whichever has no station.
Adjust the transmitter field width to the minium needed to obtain signal on radio.
Hold radio 1 - 2 feet over the ground and swing the radio side to side as you walk along the wire length.
If the pulsating stops, weekens, or changes mark the spot. No sound indicates a break.
After completing the entire boundary, return to the marked areas and examine the wire 3 - 4 feet in each direction.

Hope this helps.
 
   / locating break in Invisable fence #19  
tallyho8 said:
I know nothing about these systems but I know that you can detect a short in an electric fence by driving down the fenceline with your radio set on am and when you get by the shorted area you will hear it clicking in your radio. That transmitter will probably transmit a tone than can be picked up on an am radio and when you get to the broken spot the tone will stop. I would experiment with an am radio at the beginning of the wire going through the frequencies and see if I could pick up a signal from it on the radio. If it works, let us know.

What you are describing is called Broad Spectrum or White noise. It is caused by the voltage arcing. Same thing you hear on AM radios during a lightning storm or with bad sparkplug wires or supressor in an engines ignition system.

The telco equipment does just what Wushaw describes. It puts a known radio signal on the wire and the technician uses a receiver with a directional antenna to locate the buried wire and find signal changes that would indicate breaks or bad connections. I used one to find a failed splice on my buried well pump wiring. it took me right to the problem and also to a splice that was failing a few feet farther along. I repaired both.

Any wire splices out in the elements should be soldered to prevent internal corrosion and eventual signal breakdown. A good soldered "linemans splice"(google it) will be physically as strong as the surrounding wire it joins and be as corrosion resistant.

You might find cable locators at your local tool rental...
 
   / locating break in Invisable fence #20  
i've got about 2 acres of fence and I have just about replaced all of it rather than try to find breaks. There may only be a couple of hundred feet of original wire to my system. I've taken out a lot of trees ands stumps, dug trenches and ditches, the brush hog wheel catches it. Seems like everything I do breaks the line, but I'm almost done with the projects and hopefully the breaks. It's just so much quicker to lay out new wire, but my wire is all in the woods, no lawn to worry about.
 

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