Seaward 300 PrimeTest - Manual (Page 48)

PrimeTest 300 Operating Instructions
- 47 -
11.3 IEC Lead
Refer to Fig. 5
IEC leads are tested in 3 stages, continuity, insulation
and polarity.
The test durations for the each of the 3 stages are fixed.
Press Setup (F3) to set the Pass/Fail limits for
Continuity and Insulation stages. Use the arrow keys to
highlight and set. The pass/fail limit for the continuity
stage can be calculated Calc (F2). Enter the type and
length of cable and a new limit will be calculated. This
can be overridden by selecting the limit from the list.
Press OK (F4) when complete. Esc (F2) will exit setup
mode without saving changes.
To perform an IEC lead test, connect the IEC socket
side of the lead into the IEC inlet plug on the PrimeTest.
Connect the mains plug side of the lead into the EUT
socket.
To start the IEC lead test, press the green START
button. The earth continuity resistance for the lead is
measured at ±200mA. The display indicates the highest
resistance and the pass/fail status. If this resistance is
less
than the pass/fail limit, then the insulation
resistance will be measured.
During an insulation resistance measurement,
a high voltage is applied between Live/Neutral
and the common of the IEC lead.
The insulation resistance of the lead is measured over a
period of 2 seconds. The display shows the final reading
and the pass/fail status. If the insulation resistance is
greater than the pass/fail limit, then the lead polarity will
be checked.
The lead polarity stage checks for short and open circuit
conditions on the live and neutral conductors. It also
checks that the live and neutral wires are not crossed.
The display shows the final result and the pass/fail
status.