Vanguard Instruments ATRT-03 - Print out of a Delta-To-Wye Transformer Test in Column Format; Figure 15-1. Delta-To-Wye Column Format Printout

Model ATRT-03 (v) Operating Instruction
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15-1. Print Out of a Delta-to-Wye Transformer Test in Column Format
Figure 15-1. Delta-to-Wye Column Format Printout
Test Result Print Out is explained below:
1. Test record time and date is printed at the top line of print out.
2. Test voltage is 40 volts in this test. See section 11.2 for more detail about test voltages.
3. Type of transformer under test is Delta to Wye.
4. H tap voltage is 12,000 volts.
5. X tap voltage is 208 volts.
6. Calculated ratio shall be (C_RATIO) 99.9288
7. Measured ratio, excitation current, % Diff
A phase: Ratio=100.05, Ext Current= 002 mA, % Diff= 0.12
B phase: Ratio=100.06, Ext Current= 002 mA, % Diff= 0.13
C phase: Ratio=100.06, Ext Current= 002 mA, % Diff= 0.13
8.Winding polarity is shown as “+” or in phase.