Seaward Apollo 600 - Manual (Page 18)

Point to Point Insulation
The test is performed between the Red and Black test
terminals, both the continuity test leads are required for this
test.
Always ensure that you have selected the correct test connection method in
the test for the probe connections made.
Ensure that the appliance mains switch is in the ON position.
During this test, 250V or 500V D.C. is applied between the two connections
points. The 500V D.C. potential will be present across the two probe tips during
a Point to Point test.
Selecting test type
In manual PAT test mode, the insulation test can be switched between a 250V EUT Insulation
test, 500V EUT Insulation test, 250V Point to Point Insulation test or 500V Point to Point
Insulation test as follows:
Select Insulation Resistance (2) and press the setup key (F3). In the Test Type field, select
the required test.
During automatic sequences, the test type will be as per the test type programmed in the test
sequence.
In manual mode once the correct connections have been made for the selected test type
press the Start button, in automatic mode the test will proceed automatically. The test will
continue until it times out. If we wish to abort the current test press the Stop button. The
measurement will be displayed in Mega Ohms.
If an EUT fails the Insulation test then this may be because of internal filtering or an MOV.
Retry the test at 250V or substitute the Insulation test with a Protective Conductor or Touch
Current test.
Substitute Leakage
This test is applicable to Class I and Class II equipment. This test is used to verify that the
leakage between the mains conductors of the EUT to the EUT earth pin, or conductive
accessible surface of the enclosure, is to a satisfactory low level.
There are two possible connection methods for the Substitute Leakage test.
CLI and IEC Substitute Leakage
The test is performed between the EUT test socket live and
neutral and the EUT socket earth pin.
For IEC leads the other end of the lead should be
connected into the IEC test socket.