Voltech AT5600, Руководство пользователя

Страница: 90 / 438

C H A P T E R 7 – T E S T S A N D T E S T C O N D I T I O N S
AT5600 User Manual 98-119 issue 14
Page 90
7.1.1. LOW VOLTAGE Tests
Test Description Main Application Winding Tested Reason for Test
CTY Continuity All transformers Properly installed
fixture
R DC Resistance All transformers All windings Properly installed
fixture. Correct wire
used. Integrity of
terminations
LS Inductance
(Series circuit) Most transformers
but usually not line
frequency
transformers One winding usually
the primary Correct primary
turns. Right grade of
core material. Core
correctly assembled
LP Inductance
(Parallel circuit) Most transformers
but usually not line
frequency
transformers One winding usually
the primary Correct primary
turns. Right grade of
core material. Core
correctly assembled
QL Quality Factor Most transformers
but usually not line
frequency
transformers One winding usually
the primary Right grade of core
material Core
correctly assembled
Check for shorted
turns
RLS Equivalent
Series
Resistance Most transformers
but usually not line
frequency
transformers One winding usually
the primary Right grade of core
material Core
correctly assembled
Check for shorted
turns
RLP Equivalent
Parallel
Resistance Most transformers
but usually not line
frequency
transformers One winding usually
the primary Right grade of core
material Core
correctly assembled
Check for shorted
turns
D Dissipation
Factor Most transformers
but usually not line
frequency
transformers One winding usually
the primary Right grade of core
material Core
correctly assembled
Check for shorted
turns
LL Leakage
Inductance SMPS transformers
Communication
Transformers Others
as applicable Selected windings Check windings have
been installed in the
correct position
relative to the core
C Interwinding
Capacitance High frequency
transformers.
Isolating transformers Check winding
positioning Check
insulation thickness
between windings
TR Turns Ratio and
Phasing Most transformers,
but usually not line
frequency
transformers All windings Check windings have
corrected turns and
phasing
TRL Turns Ratio by
Inductance As with Turns Ratio
but used where there
is poor flux linkage
between windings. All windings Check windings have
correct turns and
phasing