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SMFT-1000
Users Manual
34
To set limit:
a. Use to highlight the options.
b. Push
to select the highlighted option and edit on new screen.
c. Push
to save the limit and return to the previous Diode Test.
d. Push
to manually enter a bypass diode limit.
e. Use
and to select the digit to edit.
f. Use
to change the value.
g. Push
(Back) to return to the Set Limit display.
3. Connect the test leads from the PV Analyzer to the bypass diode.
Tip: Push
to see a connection diagram.
a. Connect green test lead from the green socket to the positive anode.
b. Connect yellow test lead from the yellow socket to the negative cathode.
W Caution
For this test the modules should not generate any voltage or power. The solar
panel (DUT) must be completely shaded or in darkness.
4. Push
to start the measurement.
When the measurement is complete, the display shows:
measured voltage of bypass diode
measured current of bypass diode
Passed:
and a short beep indicates the test passed when greater than the preset limits.
Failed:
and multiple beeps (at a lower frequency) indicates the test failed according to
preset limits.
Note
This test checks that the voltage drop of the diode is within the expected range (limit).
If the voltage drop is too low the diode is shorted, if the voltage is “OL” then the diode
is open.
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