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 118
The primary and secondary voltages can be calculated from the following:
If you calculate V
s
or V
p
to be greater than 5V, you should set 5V as your test
signal. If you calculate V
s
or V
p
to be less than 1mV, you should set 1mV as your
test signal.
Table 5
The Test Conditions for Turns Ratio by Inductance Measurement
Specifying the Test Limits
When specifying turns ratio tests, it is preferable to avoid limits which are
unnecessarily tight, and which may therefore lead to measurement difficulties.
For example, if two equal secondary windings should have 10 turns each, the
ratio should be 1:1. One turn in error would produce a ratio error of 10% or -10%
(i.e. 11:10 or 10:11), and therefore limits of +5% and -5% would be suitable to
detect the error.
Please also see
14.6.11 for specific advice on programming the test, and
10.2.5 for test accuracy specification
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