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Charge-LO
Advance the menu to the Charge-LO parameter. The display will show:
Charge-LO = X.XXX A
TEST to Auto Set
The Charge-LO function is used to check if the test cables are connected properly at the
beginning of a test. A capacitive DUT will draw charging current on the Insulation
Resistance test when the Output is activated. If the charging current was lower then the
setting, the test cables may not be connected properly.
This instrument can set the Charge-LO value manually or automatically. To set the
Charge-LO value manually, use the numeric keys to enter the Charge-LO current setting
and then press the ENTER key . The program will store the Charge-LO setting and
advance to the HI-Limit parameter. The setting range of Charge-LO is from 0.000 to
3.500 A. The unit is A and 0.001A per step.
To use Auto Set, be sure that the test parameter of Output Voltage has been set to the
values that will be used for the final test and connect the test cables and/or test fixture
between the instrument and DUT. If the scanner is to be used then the scanner channel
must also be set. Then press the TEST button. The instrument will apply the voltage that
has been entered for this memory-step selection.
Please be aware that the program will activate high voltage
on the output connector while the Test button is pressed.
The program will read the charging current of DUT and set the Charge-LO current at
approximately one half (1/2) of the reading. The display will show:
Charge-LO = X.XXX A
TEST to Auto Set
The value showing on the display is the Charge-LO setting and is not the reading of the
charging current of DUT.
Then press the or key to advance the program to another test parameter or press the
EXIT key to exit from the setting mode to the operation mode.
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