Seaward 220 PrimeTest - Manual (Page 17)

Operating Instructions
Primetest 220
10
8.0 Operation of test functions
8.1 Safety test, Class I
See figure 7
8.1.1 Select the Class I test function on the rotary
switch 10 . Ensure the IEC mains lead is
disconnected from the PrimeTest 220.
8.1.2 The LCD will display a probe signal to indicate that
an earth bond test lead is required. This test
function is selected when the equipment to be
tested is fitted with a protective earth conductor.
8.1.3 Plug the equipment under test (EUT) into the EUT
socket 11 on the front of the PrimeTest 220.
8.1.4 Plug the black test lead into the black socket 12 on
the PrimeTest 220.
8.1.5 Connect the other end of the black test lead to
exposed metalwork on the EUT.
8.1.6 To start a Class I safety test sequence, press the
button 9 .
8.1.7 The earth continuity resistance for the EUT is
measured at ± 200mA. The large display 2
indicates the highest digital earth resistance,
Ω , the
small display 3 indicates a PASS/FAIL status. An
additional visual display of a ✓ or ✗ also indicates
the PASS/FAIL status.
8.1.8 Earth continuity resistance value is held on the LCD
display for a period of 1 second. A PASS or FAIL
indication will be shown, depending on value of the
displayed reading.
8.1.9 An earth continuity resistance that fails will
terminate the Class I PAT test, a PASS will
automatically sequence to the insulation resistance
test.
PrimeTest 220 REV 1 5/12/05 1:52 pm Page 15