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Hello. Would it be possible to use homeplugs on a 400volt line of about 1,5km?

Last response: in Networking
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January 17, 2014 3:35:10 AM

We need to get internet access on top of a mountain, and all we have is a high voltage electrical line used to power a ski resort lightning system. We'd be able to get 220v outlets in each end, but we're unsure whether the homeplugs will be able to send signal as far as 1,5-2km, and if the power line will be suitable to transfer the signal.
January 17, 2014 3:41:58 AM

What do you mean by high voltage?
If there are any transformers in the way, I don't think it will work at all.
If the 400V is just three phase with a neutral, then one of the phases should be able to carry the signal (although the range will vary from device to device).
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January 17, 2014 3:48:05 AM

1.5km is a long way, and I doubt that you'll get a signal. In fact, I would expect there to be 11kV (or whatever the local distrobution voltage is) to the mountain top and a pole-top transformer there.

Also, you would need both plugs to be on the same phase.

You may be better off with a directional WiFi link. Shouldn't be much interference up there, and mountaintops tend to be low on the obstacles.
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a c 127 F Wireless
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January 17, 2014 4:56:08 AM

The standard you need to dig though that this stuff is based on is called IEEE 1901. The limit on distance is 1.5km but I suspect someplace in the fine print there are other limitations. The largest issue I suspect is getting though the transformers. Most these do a very good job of blocking this signaling. The other issue you have is with that long a distance you are very likely to get other interference from external devices or maybe even the lighting being powered.

I am going to suspect it won't work mostly because of the distance but there are not a lot of other option that do not involve running fiber or putting up small wireless radio towers.
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