SAFETY
5
testing job. Allowing unauthorized personnel in the area during a test should also be dealt
with as a serious offense.
Dress
Operators should not wear jewelry, which could accidentally complete a circuit.
Medical Restrictions
This instrument should not be operated by personnel with heart ailments or devices such
as pacemakers.
TEST PROCEDURES
!NEVER PERFORM A HIPOT TEST ON ENERGIZED CIRCUITRY OR
EQUIPMENT!
If the instrument has an external safety ground connection be sure that this is connected.
Always connect the return lead first, regardless of whether the item under test is a sample
of insulating material, a component tested with the high voltage test lead, or a cord-
connected device with a two or three prong plug. The return lead should be connected
first for any type of hipot testing.
Plug in the high voltage test lead only when it is being used. Handle its clip only by the
insulator---never touch the clip directly. Be certain that the operator has control over any
remote test switches connected to the Hipot. Double-check the return and high voltage
connections to be certain that they are proper and secure.
NEVER TOUCH THE ITEM UNDER TEST OR ANYTHING
CONNECTED TO IT WHILE HIGH VOLTAGE IS PRESENT
DURING THE HIPOT TEST.
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 item under test as a
further safety precaution. A hot stick is a nonconducting 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.
WARNING
Summary of Contents for Hypot II 4500D
Page 5: ...SECTION 1 OPERATORS MANUAL ...
Page 43: ...SECTION 2 SERVICE MANUAL ...
