clare H101 - Appendix A Purpose of Tests; Insulation Test; Hipot Test

Appendix A Purpose of T
ests
Insulation Test
Warning
1000V, 5
500 V, and
250 V D
.C. test voltage
This test is used to verify that adequate insulation exists between the
mains supply pins and earth.
During the insulation test, a HV DC voltage is applied between the
earth pin and both the live and neutral pins of the Product mains supply
plug. The Tester displays the resistance measured and allows the user
to confirm sufficient insulation exists.
For a product that incorporates over-voltage protection, a 250V DC
test voltage is provided to allow a reading to be taken without the
protection devices generating a false failure.
Hipot Test
Warning
5000
V a.c./60
00V d.c. Tes
t v
oltage
This test is used to determine that the insulation is of sufficient strength
to prevent breakdown, particularly where high transient voltages are
likely. This test can be omitted when testing equipment with
components whose voltage withstands rating is insufficient to
accommodate the test without damage. This is especially true of IT
equipment.
For Class I Products, a nominal test voltage of 1.5kV AC RMS is
applied between the earth pin, and both the live and neutral pins of the
Product mains supply plug
For Class II Products, a nominal voltage of 3kV AC RMS is applied
between the Hipot probe tip and the live and neutral pins of the
Product mains supply plug.
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