Low Voltage Tests - Voltech AT5600 User Manual

C H A P T E R 7 – T E S T S
7.1.1.
Test Description
CTY Continuity
R DC Resistance
LS Inductance
(Series circuit)
LP Inductance
(Parallel circuit)
QL Quality Factor
RLS Equivalent
Series
Resistance
RLP Equivalent
Parallel
Resistance
D Dissipation
Factor
LL Leakage
Inductance
C Interwinding
Capacitance
TR Turns Ratio and
Phasing
TRL Turns Ratio by
Inductance
AT5600 User Manual 98-119 issue 14
A N D T E S T C O N D I T I O N S

LOW VOLTAGE Tests

Main Application
All transformers
All transformers
Most transformers
but usually not line
frequency
transformers
Most transformers
but usually not line
frequency
transformers
Most transformers
but usually not line
frequency
transformers
Most transformers
but usually not line
frequency
transformers
Most transformers
but usually not line
frequency
transformers
Most transformers
but usually not line
frequency
transformers
SMPS transformers
Communication
Transformers Others
as applicable
High frequency
transformers.
Isolating transformers
Most transformers,
but usually not line
frequency
transformers
As with Turns Ratio
but used where there
is poor flux linkage
between windings.
Winding Tested
All windings
One winding usually
the primary
One winding usually
the primary
One winding usually
the primary
One winding usually
the primary
One winding usually
the primary
One winding usually
the primary
Selected windings
All windings
All windings
Reason for Test
Properly installed
fixture
Properly installed
fixture. Correct wire
used. Integrity of
terminations
Correct primary
turns. Right grade of
core material. Core
correctly assembled
Correct primary
turns. Right grade of
core material. Core
correctly assembled
Right grade of core
material Core
correctly assembled
Check for shorted
turns
Right grade of core
material Core
correctly assembled
Check for shorted
turns
Right grade of core
material Core
correctly assembled
Check for shorted
turns
Right grade of core
material Core
correctly assembled
Check for shorted
turns
Check windings have
been installed in the
correct position
relative to the core
Check winding
positioning Check
insulation thickness
between windings
Check windings have
corrected turns and
phasing
Check windings have
correct turns and
phasing
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