0717 OVERVIEW 0.1 Hz VLF test and IMCORP’s Factory Grade ® technology are compared side-by-side at utility solar site. CHALLENGE VLF test passes cables but termination were still failing. RESULTS Based on distribution system experience, utility uses IMCORP’s Factory Grade ® technology to identify workmanship defects and VLF test induced damage. CASE STUDY Using Factory Grade® Technology to Identify Damaging Commissioning Test VLF Test vs. the IMCORP Factory Grade ® Technology [1] IEEE standards are classified as: • Standards: documents with mandatory requirements. • Recommended Practices: documents in which procedures and positions preferred by the IEEE are presented.

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