Seaward Apollo 500 - Manual (Page 13)

The test is performed between the EUT
test socket live and neutral and Red test
terminal.
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.
CLII Substitute Leakage
The test is performed between the EUT
socket live and neutral and Red test
terminal.
During this test, 40V A.C. is applied between the earth pin and both the live and neutral pins of the appliance mains supply plug.