meanwhile, “Ignore std test” is set as “FORCE DEV” on [Trans ID].
Solution：1. Set “Ignore std.” as “FORCE TEST”.
2. Set standard value on parameter limit setup menu.
7.16.3 Measurement interruption
In the process of test, user finds the instrument only tests the test parameter in the first several
groups of value, but the last ones has not been tested.
Reason 1: When setting pin position, user only sets the first groups of pins, but does not set one or
more group of pin in the middle, and then the left groups will not be set in the process of test.
Reason 2: On [Trans Scan], user sets Test Fail as STOP, so in test when some parameters are
unqualified, then the test will not be performed.
Solution: set Test Fail as Continue, meanwhile, reset the blank pin on parameter limit setup menu or
set “Ignore Std.” as “FORCE TEST”.
7.16.4 Poor DCR accuracy
If the sheet metal is oxygenized, tore and defaced, or user makes a fixture without applying 4-cable
test method, it will cause the deviation of DCR.
Solution:
1. Keep the sheet metal being new, so it can contact with transformer pin well.
2. Use 4-cable measurement. Refer to User-made test fixture.
3. Use deviation deduction.
7.16.5 Poor Lk accuracy
If the sheet metal is oxygenized, tore and defaced, or the lead resistance of user-made test fixture is
too large，It will cause the deviation when testing Lk.
Solution:
1. Keep the sheet metal being new, so it can contact with transformer pin well.
2. Use 4-cable measurement. Refer to User-made test fixture
3. Use deviation deduction.
7.16.6 Inaccurate TURN
For transformers with low magnetic permeability magnetic-core, the number of winding is not the
same with that of real winding because the inductor will take some ACR voltage.
Resolution:
Use the TURN mode to test winding.
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