82 User’s Manual TOS93 Series
Withstanding Voltage and Insulation Resistance Tests
Starting a Test
We recommend that you perform a pre-test inspection (p.279) before executing a test.
Output time limit
When withstanding voltage tests are performed consecutively, output time limit and rest time may become
necessary depending on the upper limit.
The following table shows the output time limit and rest time that are necessary when the ambient
temperature is 40 °C or less. If you exceed the limit, the temperature of the output section may increase.
This
may cause the protection function to be activated and “OVER HEAT” to be indicated on the display. If
this happens, stop testing and wait for the temperature to return to normal by referring to the rest time. If
“READY” is displayed in the upper right of the display when you press the STOP switch, the temperature is
back to normal.
Test mode Upper limit (i)
Output time
1
limit
1 Includes the voltage rise time, test time, and voltage fall time.
Rest time
AC withstanding
voltage (ACW)
i ≤ 50 mA No limit Not necessary
50 mA < i ≤ 110 mA 30 min. max. At least the length of time the voltage
was output
DC withstanding
voltage (DCW)
i ≤ 5 mA No limit
At least judgment delay (Judge Delay)
2
2 If Delay Auto (p.63) is set to on, rest time is not necessary.
5 mA < i ≤ 20 mA 10 min. max. At least the length of time the voltage
was output
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