M
AVTMTTR310 Rev 8 May 2016
22
Figure 5-4. Setup for Testing Single-Phase, Type B (Inverted Design) Step Voltage Regulator
Three-Phase, Two-Winding Transformers
Perform the following setup procedure for three-phase, two-winding
transformers:
1. Connect the wing-nut ground terminal of the test set to a low-impedance
earth ground using the 15 ft (4.6 m) ground lead supplied.
2. Connect the three-phase test cables to the respective H and X receptacles of
the test set. Make sure that the connectors are screwed tight to the
receptacles.
3. Connect the heavy-duty clips marked H0, H1, H2, and H3 of the test lead to
the corresponding (high-voltage winding) terminals of the transformer under
test.
4. Connect the heavy-duty clips marked X0, X1, X2 , and X3 of the test lead to
the corresponding (low-voltage winding) terminals of the transformer under
test.
WARNING
Never interchange connections between the high- and low-
voltage transformer terminals. Failure to observe proper
connections will result in a safety hazard and may result in
damage to the test set or transformer.
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