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ATS-33
9
3.7 Voltage Adjustment (If Needed)
The ATS-33 voltage readings are factory set and
calibrated. However, if you need to modify any voltage
reading, follow these steps.
Step 1
：
Manually start the primary and standby
generators.
Step 2
：
Enter Program mode and set the program item
(22)
to (01). “VAdJ” will appear on the display window.
Step 3
：
Select the phase you wish to re-calibrate by
pressing the OFF key.
EX. Generator-1 Phase L12 Calibration
EX. Generator-2 Phase L23 Calibration
Step 4
：
Use a good quality voltmeter as a reference to
calibrate the ATS-33 voltage reading to the desired
phase.
Step 5
：
With the up (▲) and down (▼) buttons reset the
voltage reading on the ATS-33.
Step 6
：
Press the “OFF” button to move to the next
phase or until the word “End” appears on the screen.
To exit hold the “OFF” key at any time for 4 sec.
End Programming Display
Step 7
：
If you get “FAIL”, the calibration is null. Touch
OFF to reset and repeat Step 1.
Calibration Failure
