Seaward 220 PrimeTest - Manual (Page 22)

Operating Instructions
Primetest 220
8.4.2 To test IEC leads connect the IEC socket side of
the lead into the IEC plug 14 . Connect the mains
plug side of the lead into the EUT socket 11 .
8.4.3 To start an IEC lead test press the button 9 .
8.4.4 The earth continuity resistance for the lead is
measured at ±200mA. The large display 2
indicates the highest digital earth resistance,
Ω .
An earth continuity resistance >20 Ω will result in a
FAIL. An additional visual display of a ✓ or ✗ also
indicates the PASS/FAIL status.
Attention - 13A IEC or extension leads of
different cable lengths will have different
resistances. As a rule of thumb:-
12 metres of 13A cable 0.2 Ω
6 metres of 13A cable 0.1 Ω
3 metres of 13A cable 0.05 Ω
8.4.5 The earth continuity resistance value is held on the
LCD display for a period of 1 second.
8.4.6 An earth continuity resistance that FAILS will
terminate the IEC lead test, otherwise it will
automatically sequence to the insulation resistance
test.
During an insulation resistance measurement a
high voltage is applied between the
LIVE/Neutral and common of the IEC lead.
8.4.7 The insulation resistance of the lead is measured
over a period of 2 seconds. The large display 2
indicates digital insulation resistance, M
Ω , the
small display 3 indicates a PASS/FAIL status. An
additional visual display of a ✓ or ✗ also indicates
PASS/FAIL status.
8.4.8 Insulation resistance value is held on the LCD
display for a period of 1 second. The displayed
resistance value will flash if a FAIL and remain
steady if a PASS.
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PrimeTest 220 REV 1 5/12/05 1:52 pm Page 20