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Suitable for Treatment

Suitable for Treatment Q: We’ve taken some photographs of cable samples identified with off-line PD testing.  I was hoping to get your opinion of the cable and if injection would be able to address these issues. On two samples, we found the XLP insulation was a greenish color. We’ve never found cables discolored before and…

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Failure Causes III

Failure Causes III In my January 24th post, “Failure Causes I,” I provided a partial answer to an inquiry seeking to understand if rejuvenation technology was appropriate for the “many types of aging factors” from which his firm’s circuits might suffer. We learned that 39% or more of all circuit failures are component failures and…

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Failure Causes I

Failure Causes I Q: I wonder if you have any information I could use to help address a concern I have heard in my company. That concern is that a 30 to 40 year old cable may have accumulated degradation due to many types of aging factors. Cable injection may not substantially address these factors…

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EPR (Part 3 of 3)

EPR (Part 3 of 3) Over the course of the last two days I delivered two posts. In the first, titled “EPR (Part 1 of 3),” I provided a response to the inquiry on whether it made sense to rejuvenate aging EPR cables. The short answer was yes and I dispelled some EPR myths along…

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EPR (Part 2 of 3)

EPR (Part 2 of 3) In yesterday’s post, EPR (Part 1 of 3), I provided a response to an inquiry on whether it made sense to rejuvenate aging EPR cables. The short answer was yes and I dispelled some EPR myths along the way. This post explores the chemistry of EPR and dispels another myth suggested…

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EPR (Part 1 of 3)

Rejuvenation and EPR Cables (Part 1 of 3) Q: I’ve heard some people say that rejuvenation isn’t appropriate for EPR cables. Does it ever make sense to rejuvenate EPR cables? A: It’s true—some have suggested that those who invented rejuvenation technology never intended to use it treat EPR cable. That claim is without merit. The…

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Fluid Flammability

Fluid Flammability Q: Our construction centers have posed the following questions: 1. Is the injection fluid flammable after the cable has been treated? If yes, for how long? 2. Is it safe for our crews to splice a failed cable that has been injected? What type of precautions do they need to take when working…

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