C H A P T E R 1 4 - A T E D I T OR
AT5600 User Manual 98-119 issue 14 Page 283
How a Kelvin Check is Performed
To perform the Kelvin check, each node has the sense line shorted to ground and
the power line is energized with a low voltage. If the connection between the
power and sense lines is poor, the easiest path for the current to take is through
the current sensing shunt and a large current will be measured. If the connection
is strong, the current sensing shunt will be bypassed, and the measured current
will be small.
Any resistance lower than 5 Ohms from power to sense will pass the test, and
any resistance higher than 10 Ohms will fail the Kelvin check.
If there are one or more failures, a failure report will be shown which indicates
which node number failed and a terminal name that corresponds to that node.
This screen provides three options. The user can adjust their connections to
resolve the issue and RETRY, ignore the failure and CONTINUE with testing, or
ignore the failure and CANCEL the testing. In the case of retry and ignore, the
execution is resumed by pressing the RUN button.
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