Vanguard ATRT-01 S2 - Manual (Page 33)

REV 2 ATRT-01 S2, ATRT-01B S2, AND ATRT-01D S2 USER’S MANUAL
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3.5.4. Performing a Single Phase Transformer Test Using Preset Voltage Table
The ATRT is pre-programmed with 46 transformer name plate voltages. These pre-programmed
values can be used to quickly test a single phase transformer’s turns ratio and compare the test
results against the name plate voltage. Please see Table 8 for a list of the pre-programmed
name plate voltages. Follow the steps below to perform a single phase transformer test using a
pre-programmed name plate voltage:
a. Start from the “START-UP” menu:
Press the [CLEAR] key.
b. The following screen will be displayed:
Press either the
[∧ Contrast]
key or the
[∨ Contrast]
key to scroll through the pre-
programmed name plate voltage values.
Continue to press the
[∧ Contrast]
key or the
[∨ Contrast]
key until the desired
name plate voltage values are displayed on the screen.
Press the
[START]
key when the desired name plate voltage values are displayed.
c. The following screen will be displayed while the test is being performed:
The test results will be displayed on the LCD screen when testing has finished (multiple
examples shown:
Example results from a passed test Example results from a failed test
using nameplate voltages. using nameplate voltages.
M-RATIO=+20.05
ERROR= 2.5 %
FAILED TTR TEST
2,400/120 R=20.00
M-RATIO=+20.05
ERROR= 0.25 %
PASSED TTR TEST
2,400/120 R=20.00
SINGLE PHASE XFORMER
PLEASE WAIT
TEST IN PROGRESS
SCROLL TO SELECT
“START” TO RUN TEST
H = 2,400
X = 120
1.TEST XFMR 06/02/10
2.SETUP 15:33:10
3.CALCULATOR