Associated Research HYPOTULTRA III 7620, Operation And Service Manual, Page: 15 / 148

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1.4.5. Device Under Test
Never touch the Device Under Test (DUT) or anything connected to it while
high voltage is being applied by the Hipot.
When testing with DC, always discharge the capacitance of the item under test and anything the
high voltage may have contacted--such as test fixtures--before handling it or disconnecting the
test leads.
HOT STICK probes can be used to discharge any capacitance in the device under test as a
further safety precaution. A hot stick is a non-conducting rod about two feet long with a metal
probe at the end that is connected to a wire. To discharge the device under test, two hot sticks
are required. First, connect both probe wires to a good earth ground. Then touch one probe tip
to the same place that the return lead was connected. While holding the first probe in place,
touch the second probe tip to the same place where the high voltage lead was connected.
1.4.6. Key Safety Points to Remember
•
Keep unqualified and unauthorized personnel away from the test area.
•
Arrange the test station in a safe and orderly manner.
•
Never touch the product or connections during a test.
•
In case of any problem, turn off the high voltage first.
•
Properly discharge any item tested with DC before touching connections.
WARNING