VOLTECH AT3600 USER MANUAL TRANSFORMER TESTS
TESTS AND TEST CONDITIONS VPN 98 - 024 PAGE 7.1.43.
1.24. TRIM - TRIMMING ADJUSTMENT
WHERE USED
TRIM is used on transformers with adjustable or variable components where it is
desirable to adjust the transformer at various points within the test program to give
specific measured values.
The Trimming Adjustment is placed within the program immediately after a test for
the value to be adjusted. It is only actioned if the transformer fails that particular test.
e.g. To trim the inductance of a particular transformer to a specific value, then include
TRIM test immediately following an inductance test.
Trimming adjustment can be used with any small signal test such as resistance,
inductance and capacitance.
There is no trimming facility for high voltage tests such as MAGI and HIPOT.
TEST LIMITS
Although the TRIM test itself does not have any user specified limits, the Trimming
adjustment is carried out using the same test limits as set for the preceding test.