It definitively proves out the integrity of the workmanship, cable insulation and its associated accessories such as splices and joints. A VLF AC withstand test is an excellent test method for insuring the cable laying and workmanship of the new installation is good and will provide reliable, long term power distribution to the distribution grid the Wind Farm serves.
High Voltage, Inc. also can supplement VLF withstand testing with Tan delta testing diagnostics via a Tan delta bridge used in conjunction with a VLF AC Hipot. By monitoring the tan delta readings of a cable circuit over time, one can determine if a particular cable is beginning to show insulation degradation commonly caused by water trees possibly leading to a cable fault disrupting power delivery. By discovering a suspect cable before a catastrophic cable fault, plans can be made ahead of time to repair, rejuvenate or replace the cable and splices during a controlled repair outage minimizing power interruption and service failure. These two testing methods (VLF & Tan delta) are the easiest, most time proven, simple, and conclusive for Wind Farm managers and HV contractors to enhance and
continuously provide a reliable installation and reliable generation of power. High Voltage, inc. is very familiar with all cable testing technologies, and knows cables.
High Voltage, Inc.
31 County Rt. 7A, Copake, NY 12516
Web site: www.hvinc.com
Walter Hearn Associates Inc.
Design for Marketing
1099 Deerfield Dr. NW
Blacksburg, VA 24060