MI 3290 Earth Analyser
Tests and Measurements
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11
Tests and Measurements
11.1 Visual tests
Visual test are used as guidance to maintain safety standards prior testing. To use those
visual tests please select VISUAL under Single tests. Visual tests are prepared to make all
safety checks before starting the test.
Figure 11.1: Visual Test menu
Options
Pass
Fail
Clear
Checked
Safety Precautions Before Test
No. Description
Values
1
Wearing dielectrically rated gloves, helmet and footwear.
Pass/Fail/Clear/Checked
2
Exposed test leads and electrodes are isolated from workers and public
prior.
Pass/Fail/Clear/Checked
3
Remote probes and test leads are under continuous observation.
Pass/Fail/Clear/Checked
Table 11.2: Visual Test - Safety Precautions Before Test
Safety Hazards During Test
No. Description
Values
1
Avoid ungrounded ends of test leads.
Pass/Fail/Clear/Checked
2
Surge arrester can approach line potential.
Pass/Fail/Clear/Checked
3
Never disconnect the ground.
Pass/Fail/Clear/Checked
4
Lightning or switching currents can be discharged into the ground.
Pass/Fail/Clear/Checked
5
A system fault can occur if a surge arrester fails during testing.
Pass/Fail/Clear/Checked
6
Hazard can occur when disconnecting neutral and shield wires.
Pass/Fail/Clear/Checked
7
Hazard can occur due to current flow through the interconnected shield
wires.
Pass/Fail/Clear/Checked
