72 TOS5300
Pre-Test Inspection
Inspection of test leads and the judgment feature
Allow a current to flow between the HIGH VOLTAGE and LOW VOLTAGE terminals to check the
judgment feature. During this inspection, the two test leads are shorted, so you can check for
breaks in the test leads at the same time.
We recommend that you perform this pre-test inspection before you use the TOS5300 Series.
The test leads are consumable parts. Check them periodically for tears and breaks.
p.26
1
Short the LOW test lead (black) and HIGH VOLTAGE test lead (red).
2
Connect the LOW test lead (black) to the LOW VOLTAGE terminal.
3
Connect the HIGH VOLTAGE test lead (red) to the HIGH VOLTAGE terminal.
p.47 , p.49
4
Set the test conditions.
For a withstanding voltage test, be sure to set the upper limit (UPPER). For an
insulation resistance test, be sure to set the lower limit (LOWER).
5
Press START to start the test.
6
If a withstanding voltage test results in a U-FAIL judgment or if an insulation
resistance test results in an L-FAIL judgment, both the test leads and the
TOS5300 Series judgment feature are working properly according to this
simple check.
If a U-FAIL or L-FAIL result does not occur even after you perform this check multiple times, there
may be breaks in the test leads. Double-check whether this is the case. If there are no breaks in the
test leads, the TOS5300 Series needs to be repaired.
To have your TOS5300 Series repaired, contact your Kikusui agent or distributor.
Breaks or tears in the insulation may cause electric shock or fire. If a break or tear is found,
stop using the damaged test lead immediately.
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