Multifunction Electrical Tester Calibrator
Use the Leakage Current Function
55
Substitute Leakage Current Mode
The substitute leakage current mode, often used in Appliance testers, uses a
safe low level test voltage instead of power line voltage. The DUT measures the
leakage current flowing at its SENSE terminal. This current is used to calculate
what the current would be at the nominal power line voltage. This recalculated
current is displayed for the leakage current value.
The Product works as a simple variable resistance. Using the nominal leakage
current and known nominal voltage in the power line, the Product calculates the
appropriate resistance using the following formula:
outalnoalno
RIVR −=
minmin
/
I
nominal
is the nominal leakage current set by the user. V nominal is nominal line
voltage selectable in the Setup menu from series: 100 V, 110 V, 115 V, 120 V,
127 V, 220 V, 230 V, and 240 V.
After calculating the resistance, the Product connects the resistance to the output
terminals.
To start a substitute leakage current calibration:
1. Push .
2. If Substitute Leakage Current is not already displayed, push the Mode
softkey.
3. Using the cursor keys or rotary knob, highlight the Substitute selection and
either push the Select softkey or push in the rotary knob.
4. If necessary, either use the rotary knob or keypad to change the current
value.
5. Referring to the TERMINALS area of the display, connect the DUT to the
Product.
6. Push the START button on the DUT.
7. Push to start the calibration process.
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