Vanguard ATRT-01_01B_01D - Manual (Page 22)

Model ATRT-01 (v) Operating Instructions
Rev 02
May 02, 2002
21
22.0 Three Phase Transformer Test Cable Connection Display
CABLE PHS-A XFMR
X1, X2 to X1, X0
H1, H2 to H1, H3
“START” TO RUN TEST
Figure 22-0. Cable Connection Display
a. Description: If a user is using the ATRT-01 to test a three-phase transformer, the transformer is
tested one phase at a time. The user must connect the ATRT-01’s H1-H2 and X1-X2 cable leads to
the appropriate windings to produce turns-ratio readings for phases A, B, and C. The ATRT-01
displays the lead-to-bushing connection instruction (for each phase). By following the connection
instruction, the ATRT-01 will lead the user through phase A, B, and C testing.
This feature reduces the probability of any hook-up error in the field.
b. Origin: Select a three-phase transformer from the XFMR CONFIGURATION menu (see Figure
17-0).
c. Action Option: Connect the ATRT-01 test leads to the transformer bushings, then press START
to run test.