AC90SVHE-3 / AC100SVHE-3 Operations Manual....
56
9
CALIBRATION
In an uncalibrated state the input and output voltage and input current metering system should be
within 5%. The uncalibrated output current meter is normally 10% low. For calibration an external
reference voltmeter will be required along with a calibrated current transformer or probe. If the
system is to be calibrated on board using the yacht’s loads, attempt to shut down all transient
(fluctuating) loads if possible. Cyclic loads will complicate the current meter calibration process.
This procedure must also be followed after replacing the battery on a maintenance basis
1)
Turn the system off and secure input power. Remove the front cover.
2)
Remove the lower front protective panel from the system, and set it aside. The input and
output power terminal blocks will be located at the bottom of the power panel located in the
lower compartment. Refer to the installation section of the Operations Manual for additional
information. Re-apply power to the system and bring the system on-line. Transfer the
yacht’s load
(or external test load bank)
to the converter.
3)
Shore Power Calibration
- Press the SHORE POWER
(2)
button under the LCD
(1)
display.
Use an external reference meter and current transformer or clamp to measure the input
(shore
power
) power at the input terminal block. To enter the meter calibration screen, press and
hold the SHORE POWER
(2)
button down for 7 seconds, or until the calibration display
appears, then release the button. Use the SHORE POWER
(2)
button to move the cursor to
the parameter to be calibrated, voltage or current. Change the selected parameter by pressing
the F1 button to increment and the F2 button to decrement the displayed value. When all
displayed values equal the values measured by the reference meter, pressing the SYSTEM
STATUS
(5)
will store the new calibration values and return the display to the System Status
display. Press the SHORE POWER
(2)
button to verify proper shore power meter calibration.
4)
Converter Power Calibration
- The CONVERTER POWER calibration works in a
fashion similar to the SHORE POWER calibration described above. Press and hold the
CONVERTER POWER
(4)
button for 7 seconds, or until the converter power calibration
display appears. Move the reference meter probes from the input to the output terminal
blocks. Then use the CONVERTER POWER
(4)
button to move the cursor to the
parameter to be calibrated. The F1 button will increment the displayed value, the F2
button will decrement it. Press the SYSTEM STATUS
(5)
button to exit the calibration
function. Select the CONVERTER POWER
(4)
display to verify the calibration
correction factors have been stored.
