Seaward 300 PrimeTest - Manual (Page 74)

PrimeTest 300
Operating Instructions
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The next test in this sequence is an insulation resistance
test. The display is as shown below.
Note: In order to perform an Insulation Resistance
measurement correctly, the EUT mains switch
must be in the ON position. If the EUT mains
switch is OFF, only the insulation of the power
cord will be tested as the test voltage cannot
be applied beyond the mains switch.
When satisfied that the EUT mains switch is in the ON
position, press the
START key to proceed. The display
will now progress to the measurement screen as shown
below.
Note: In Expert Mode the test will begin with the on
screen prompt and START key press.