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11 test result detail format printout (continued) – Vanguard Tri-Phase User Manual

Page 42

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TRI-PHASE OPERATING™ INSTRUCTIONS

42


13.11 Test Result Detail Format Printout (continued)
The same report is now shown in detailed format printout (Figure 28.0).

The test results detail printout is explained below.

1.

Test record time and date is printed at the top of the printout

2.

Test voltage is 40 volts at 60 Hz for this test. Refer to paragraph 11.2 for more details
about test voltages and frequencies

3.

Type of transformer under test is Single Phase

4.

Transformer configuration diagram

5.

H tap voltage is 2,400 volts

6.

X tap voltage is 240 volts

7.

Calculated turns-ratio is 10.000

8.

Measured ratio is 10.005

9.

Percentage error between calculated ratio and measured ratio is 0.05%

10.

Measured winding phase angle is 0.02 degrees

11.

Excitation current is 1.9mA


NOTE:

A phase angle printout of 999.9 indicates an unstable phase angle reading.