You saved us from a million dollar outage. This was a cheap insurance policy for the million dollar outage you prevented.” Note: A DC HIPOT test was performed just prior to using the IMCORP PD Diagnostic Test. – Project Engineer, Large Petro-Chemical Company,  TX

By identifying the defective splice before failure, you just paid for all of the testing we have done! –Casino Utility Manager, Large Casino, CT

Cooperative Utility
The exit feeder where you found the cable defect would have taken out a number of the circuits. Management has put offline PD testing into our preventive maintenance specifications. –Engineer, Utility Coop, TN

Wind Energy

IMCORP’s work at our site was professional, efficient, and provided excellent communication through out the testing process. IMCORP personnel were very interactive with site employees and the additional contract personnel assigned to this task. They were willing to adapt their test procedures to match our site conditions. Their experience with wind farm operations also led to limited downtime and lost production. IMCORP met and surpassed our expectations. If the need arises, we will most certainly look to them to provide our collector system testing needs. –Wind farm Operations Regional Manager, NY

It is difficult on a wind farm to maintain high turbine availability when the collection system is unreliable. Wind farm cable failures will never happen at a convenient time. Off-line power frequency PD diagnostics is the proactive approach to collector system reliability. Proper planning and preparation is key to minimizing down time and a successful cable reliability program. –Windfarm Project Manager, CO

VLF HIPOT and Tangent Delta tests indicated our cables were reliable. We have had 4 failures since we energized our system. We learned absolutely nothing from these tests. -Large Utility/Wind farm Owner

Engineering
‘the off-line power frequency partial discharge diagnostic method duplicates the cable manufacturers’ test procedures as close as technically possible for a field test. It is the best way to insure that not only your cable and accessories meet the established IEEE cable system standards, but that the installation of the system will meet the criteria also.” -Consulting Engineer, Portland, Oregon

Large Utility
We use 60Hz PD diagnostics because we want to get the most benefit for our cable replacement dollar.

Our company tried a 0.1Hz tangent delta testing technology and found that all of our aged cables were … aged! We also did not find good correlation between the measured tangent delta value and the recorded failure history of the cable segments. This did not help us because we want to know which cables are the worst, so we threw out that idea. -Sr. Engineer, Large Utility, CO

I know that we are injecting a lot of good cable. We are looking to 60Hz PD diagnostics to help us direct our cable rehabilitation program.

In the past, our cable replacement program was based on antidotal evidence and the squeaky wheel getting the oil. Now we are looking to 60Hz PD diagnostics to help us prioritize our cable reliability program. -Sr. Engineer, Large Utility, TX

After starting our cable reliability program with IMCORP, our buried system had a 50% drop in failures in the first year we have maintained this improvement.

We have tried every cable test on the market and nothing has compared with the performance of the IMCORP PD test. -Sr. Engineer, Large Utility, FL

We compared an online testing company with the IMCORP test. The other company never mentioned anything about systematic and severe problem, but with IMCORP technology the problem was easily identified. It stuck out like a sore thumb.

In the past, when we applied the DC or VLF HIPOT we experienced several insulation failures per year on our new substation exit cables. Since we started using the IMCORP test 4 years ago we haven’t had any. -Sr. Engineer, Large Utility, WI