13
Operation
DC Hazardous Voltage Testing
The Voltage Detector indicates the presence of DC voltages between 6 VDC
and 1500 VDC. When testing DC voltages, a connection must be established
between the ground terminal of the Voltage Detector (see Figure 1) and a
known earth ground. This connection may be made using a suitable insulated
cord equipped with clamps on each end, such as the temporary bond. At no
time should the ground terminal on the Voltage Detector be loosened. If
there is any doubt as to the continuity of the grounding cord used, test the
cord before it is used to test for hazardous voltages.
To test the continuity of a grounding cord, do the following:
1
Connect one end of the cord to the probe tip of the Voltage Detector. If
you are testing the temporary bond, connect the large clip to the tip.
2
Press and hold the Voltage Detector trigger.
3
Touch the other end of the cord to the Voltage Detector check contact.
The red LED should flash. Do not use the cord for testing if it does not
pass this test.
Note
This test verifies whether this ground cord can be used with the
Voltage Detector. It does not verify the cord’s current-handling
ability for use as a bond.
To test for hazardous DC voltage, do the following:
1
Perform a self check.
2
Perform an AC hazardous voltage test. If the AC hazardous voltage test
indicates no hazardous voltage, proceed. Otherwise, halt testing.
3
Prepare a temporary ground bond, such as the Voltage Detector
temporary bond, and test it as described above.
4
Press the probe tip against the object to be tested and press the trigger. It
may be necessary to turn the tester from side to side to break through
paint or other surface finishes or corrosion. Ensure that a reliable contact
is made.
5
To avoid false indications due to static electrical discharge, release and
repress the switch while still making contact with the object. Ensure that
a reliable contact is maintained.
-continued-
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