Multifunction Electrical Tester Calibrator
Use the Leakage Current Function
51
Passive Leakage Current
For passive leakage current calibration, the Product presents a passive variable
resistance on the OUTPUT HI and LO connectors. When connected to the
Product, the DUT applies a voltage to this resistance and the Product displays
the current flowing through the resistance. Figure 8 shows the simplified
Calibrator circuit for this function.
R
OUTPUT V, HI, mA~
HI LO
mA
iep015.eps
Figure 8. Simplified Passive Leakage Current Schematic
The internal ammeter of the Product measures the current flowing from the
DUT’s source terminal (L) to its protected earth (PE) terminal. The Product
leakage current range is 0.1 mA to 30 mA, with an external applied voltage from
25 V to 250 V ac or dc.
Before Passive Leakage Current calibration can be performed, a nominal
leakage current must be entered.
To enter a nominal leakage current (Id nom):
1. Push the Id nom softkey.
2. Using the keypad, type in the nominal leakage current.
Note
The softkeys can be used to select the units multiplier of A, mA or
μ
A instead of the exponent key ().
3. Push .
Note
The measured current may be different than the entered nominal
current by up to
±
10 %, depending on power supply voltage and set
nominal value.
Note
If the DUT is not connected to the Hi and LO terminals of the
Product, an Output/Input overload message is displayed. This
same message is displayed if the LC fuse is open.
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