INSULATION / PAT TESTING PROCEDURE
DO NOT FLASH OR HI-POT TEST WELDERS
Some PAT testers are marketed as do-it-all units and incorporate hi-pot or flash tests. Such
tests are not only superfluous to the requirements of PAT testing, but can be damaging to
otherwise satisfactory equipment.
If a PAT tester that incorporates hi-pot/flash testing as part of a programmed test routine is to be
used for the insulation resistance test, then the hi-pot/flash test function must be disabled.
Dielectric strength testing is performed by Inverter Fusion Limited during product manufacture
and is not required as an in-service test.
DO NOT PERFORM EARTH LEAKAGE TESTING ON WELDERS
An earth continuity test is not required on Class II welding equipment as such equipment does
not rely on a protective earth connection to the welding circuit for electrical safety. There are no
exposed conductive parts on the Marvel welders that are directly connected to earth.
WARNING
The welder (in common with all solid state power converters) operates with high
earth leakage current. An earth connection is essential before connecting the mains supply to
the welder.
3. Functional Checks
To check that the equipment is functioning correctly, confirm that the unit operates and functions
in accordance with the operator's instruction manual supplied for the relative model under test.
For any further information or advice regarding the Pat Testing of the Fusion Product range
please contact our Technical Department.
Tel: +(0)1404 549791
Fax: +(0)1404 46718
Or Write To:
Inverter Fusion Limited
Heathpark Way
Heathpark Industrial Estate
Honiton
Devon
EX14 1BB
England
Tel: +(0)1404 549791
Fax: +(0)1404 46718
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