Vanguard Instruments ATRT-03 - 15 Three-Phase Transformer Test Procedure Using Nameplate Voltages; Table 15-1. Three-Phase Transformer Test Procedure Steps

Model ATRT-03 (v) Operating Instruction
44
15.0 Three-Phase Transformer Test Procedure Using Nameplate Voltages
Table 15-1 shows the steps to test a Delta to WYE (12,000/208V) transformer.
Table 15-1. Three-Phase Transformer Test Procedure Steps
STEP
DESCRIPTION DISPLAY ACTION
1 Initiate Transformer Test
1.TEST XFMR 04/12/00
2.SETUP 13:06:00
3.CALCULATOR
4.DIAGNOSTIC
Press key 1
2 Select Delta to Y Phase Transformer
XFMR CONFIGURATION
1.SNGL PHS 2.dT-Y
3.Y-dT 4.dT-dT
5.Y-Y
Press key 2
3 Select to use transformer nameplate
voltage
XFMR NAME PLATE VLTG
1.YES
2.NO
Press key 1
4 Select no stop between phases
STOP BETWEEN
PHASES?
1.NO
2.YES
Select key 1
5 Enter H line voltage
ENTER H WINDING
NAME-PLATE VOLTAGE
V
Use keys 0-9
6 Confirm H voltage
ENTER H WINDING
NAME-PLATE VOLTAGE
12000 V
Press ENTER
7 Enter X line voltage
ENTER X WINDING
NAME-PLATE VOLTAGE
V
Use keys 0-9
8 Confirm X voltage
ENTER X WINDING
NAME-PLATE VOLTAGE
208 V
Press ENTER
9 Start test
DELTA to Y XFORMER
“START” TO RUN TEST
OR
“STOP” TO ABORT
Press START
key
10 Observe test results
RATIO mA %DIFF
+100.05 002 0.12
+100.06 002 0.13
+100.06 002 0.13
None
11 Go to next screen
RATIO mA %DIFF
+100.05 002 0.12
+100.06 002 0.13
+100.06 002 0.13
Press any key
12 Print test result with the built-in
printer
PRINT TEST RESULTS?
1.YES
2.NO
Press key 1