Vanguard ATRT-01S3 Single phase TTR

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The Vanguard ATRT-01S3 Single phase TTR is an automatic transformer turns-ratio tester. This fourth-generation portable device uses the IEEE C57.12.90 measuring method and line power. The Single phase TTR allows technicians to find transformer turns ratios and the turns ratio percentage error. The Vanguard ATRT-01S3 Single phase TTR features an expansive memory and storage to improve analysis after testing. The device stores 128 records, with 33 reading internally, for a simple recall of previous test results. Significant flash drive storage further improves memory, with a maximum limit of 999 test records featuring vital TTR analysis.