Seaward 300 PrimeTest - Manual (Page 72)

PrimeTest 300 Operating Instructions
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The test will run until the countdown timer in the
Duration field has reached zero.
Note: During the test, the mains cord should be
flexed
at the points of entry into the
equipment and the mains plug. Changes in
the reading may indicate damage to the
protective
earth conductor or a poor
connection.
At the end of the test duration, the PrimeTest 300 will
compare the last reading with the Limit to determine the
outcome of the test. If the last reading is lower than the
Limit, a Pass result is recorded. This is indicated on the
display by a large tick mark next to the measurement
field, as shown below.