6
1.4.3. Test Operator
Qualifications
This instrument generates voltages and currents that can cause harmful or fatal electric shock
and must only be operated by a skilled worker trained in its use.
The operator should understand the electrical fundamentals of voltage, current, and resistance.
They should recognize that the test instrument is a variable high-voltage power supply with the
return circuit directly connected to earth ground, therefore, current from the high-voltage
output will flow through any available ground path.
Rules
Operators should be thoroughly trained to follow all of the aforementioned rules, in addition to
any other applicable safety rules and procedures. Defeating any safety system should be
considered a serious offense with severe penalties such as removal from the Hipot 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 that could accidentally complete a circuit.
Medical Restrictions
Personnel with heart ailments or devices such as pacemakers should be informed that the
voltages and currents generated by the instrument are very dangerous. If contacted it may
cause heart-related problems that a person of good health may not experience. Please have the
test operator consult their physician for recommendations.
1.4.4. Instrument Connections
Never perform a hipot test on energized circuitry or equipment.
The instrument is equipped with a safety ground connection, be sure that this is
connected to a good earth ground.
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 from the Hipot and the Line, Neutral, Ground and Case connections from the Line
Leakage tester to be certain that they are proper and secure.
To Next Page
Loading...
Need help?
General
