3200B SERIES OPERATION MANUAL
TRANSMILLE LTD. Page 22
2. Measuring Insulation Test Voltages & Current
Step 1 From the Insulation Resistance menu displayed on the 3200B,
select the VOLTAGE function using the soft key.
Step 2 Select the required voltage range using either the digital Control or the
up / down arrow keys. Ranges include 50V, 100V, 250V, 500V and 1000V.
The impedance of each range is automatically set to give the correct
load 1mA / 0.5mA (see test current below) at the applied nominal
voltage range.
RANGE INPUT IMPEDANCE
1mA 0.5mA
50V 50 kOhm 100 kOhm
100V 100 kOhm 200 kOhm
250V 250 kOhm 500 kOhm
500V 500 kOhm 1 MOhm
1000V 1 MOhm 2 MOhm
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