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Description of Tests
Flash Test (PAT4 DVF only)
A flash test (dielectric strength test) is usually a manufacturers type test and should not normally be carried out as a routine test. The test stresses
the asset insulation, and can in some cases actually cause damage. However it may be advisable to perform a flash test if the asset concerned has
been completely overhauled.
In cases where assets contain interference suppressors, the flash test may need to be omitted if the voltage withstand rating of the suppressor(s) is
insufficient. Alternatively these components may be disconnected.
Never perform a flash test if there is any doubt!
Safety precautions
A flash test on a Class 1 asset applies 1500 V a.c. to the asset supply lead (L/N conductors) and this voltage will exist within the asset being
tested. For a Class 2 asset, 3000 V a.c. is applied from the tip of the flash probe. In the case of a faulty asset, physical contact with any part of the
asset may give an electric shock. Do not touch, or allow anyone else to touch the asset under test.
It is the responsibility of the user to take the necessary precaution to prevent danger to themselves and to other persons.
1 For Class 2 assets, connect the flash test probe. Press the
OK
key to proceed.
Check that it is safe to proceed.
2 To prevent accidental application of the flash test, the
SHIFT
key must be held down for the duration of
the test. If the key is prematurely released, the test will be aborted.
3 For Class 2 assets, hold the test probe against the appliance insulation or to any exposed metal parts.
4 When the test finishes, press
PASS
or
FAIL
as appropriate.
Flash Class 2
Warning HV
Press and hold the
SHIFT key to test
Flash test
FAIL
0.2mA
*PASS