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Doble TDR900 User Guide
72A-2612-01 Rev. A 09/06
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Figure 9. Connecting Safety Ground to Breaker
Note: Proper grounding techniques are a very important step in safety and in ensuring
reliable breaker test results.
3.4 Personnel Safety
A pretest meeting is recommended. Other crews may be working on non-test related tasks
in close proximity to equipment being tested. The pretest meeting should include all
personnel who will be working in proximity to the area where testing will be performed.
In this meeting, the tests to be performed; the apparatus and the voltage test levels
involved; potential hazards involved with the work; and the individual assignments
should all be reviewed with the crew members.
Test personnel need to remain aware of the work activity taking place around them and
alert to the possibility that non-test personnel may enter the test area. A consistent and
uniform set of signals, both visual and verbal, should be agreed upon, and should be
followed by all of the crew members during testing. While making the various types of
connections involved in the tests, it may be necessary for personnel to climb up on the
apparatus, but no one should remain on the apparatus during the test itself.