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High Voltage Phase Cable Spacers

High Voltage Phase Cable Spacers

(OP)
Hello:

At my federal agency we have a 12.47kV overhead line that is strung using individual insulators on each utility wooden pole.  The poles are spaced at approx. 150' from each other and is about 2 miles long.  On each run between cables large insulating balls were installed to avoid phase contact during high wind situations.  This has not worked entirely because some balls have become water laden during winter and the water has frozen. The added weight has increased the cable sag and high winds have caused some phases to wrap around and cause faults.

Two solution methods have been suggested. Namely, remove the balls and use cross arms at each pole to separate the phases or use remove the balls and use phase to phases insulated spacers to keep the lines from coming into contact with each other.

The preferred method would be the spacers, but we cannot located any supplier or manufacturer.

Any suggestions would be appreciated.

RE: High Voltage Phase Cable Spacers

Can you drill a bunch of holes in the balls so they don't fill with water?  Or are you talking about water freezing on the outside?

RE: High Voltage Phase Cable Spacers

(OP)
To itsmoked:

Thanks for your reply, but the insulating balls do have holes and the water did freeze inside one of the balls causing the scenario described above.  Our preference at this time is to install insulated spacers.

If you know any sources please let me know.



RE: High Voltage Phase Cable Spacers

Hidalgo:

You could simply install a 25kV polimeric insulator between the lines. They would work well for your situation.

RE: High Voltage Phase Cable Spacers

Sediver may be one of the possible phase spacer suppliers. Bellow is the point of contact



Ezio DEL BELLO
E-mail :    sediver@bellnet.ca

Phone :    +1-514-739-3385
Fax :    +1 514-739-3669

RE: High Voltage Phase Cable Spacers

Am not sure, but I thought that those orange balls were to signify line locations in the proximity of helicopter landing areas.
Raisinbran

RE: High Voltage Phase Cable Spacers

I am not sure, but I thought that those orange balls were used to identify line locations in the area of helicopter landing pads.
Raisinbran

RE: High Voltage Phase Cable Spacers

....large insulating balls were installed to avoid phase contact during high wind situations. Are those balls are for aviation marking line for visualization of the power line?

For reference, see the enclose link  http://www.gpfiberglass.com/page12.html


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