M191 starts measure short current.
MEATEST, s. Connect UUT the output terminals. Set nominal value the requested capacitor using numerical keyboard and
confirmby ENTERbutton.
C. Maximum allowed test voltage.o.
G.
When HVC mode the display shows information follows:
Fig.
TypicalshortcurrentofUUTs megaohmmetersisseveralmAmax. Sense the capacitance function offer tool for
calibration those megaohmmeters and insulation testers which can measure also capacitance. Start UUT measurements, typically pushing ONbutton the UUT.Notes:
Whenin SHORTmode, groundingoftheLfrontpanel terminal always set ON. terminal connectedto
protection earthpotential.r._________________________________________M191 Insulation Tester Calibrator
4. Select requested test voltage level UUT. Maximum test voltage 000
VDC.
H. the output terminals currently connected test voltage
- Accuracy the set capacitance %. Select requested test voltage level UUT. Compare M191 reading UUT specification.
I.
B.
F. Green LEDstarts light. Select HVC mode pushing repeatedly FUNCTION FUNCTION DOWN button until HVC label
appears the display. Calibration value the selected position will appear.7 HVC High voltage capacitance
In High voltage capacitance function (HVC) the calibrator enables connect the output terminals one three
high voltage capacitors which are built-in the calibrator.
E. Use only test leads with guaranteed isolation according test voltage
range UUT.
Operating procedure
A.10 High capacitancemode
- Calibration value the selected capacitor
- Vmax. Select resistance range UUT necessary. Use test leads delivered with UUT whenever possible.
The calibrator equipped with capacitors with nominal values 10, 50, 100 nF. Switch the UUT output OFF remove test voltage fromthe output terminals.
D. Select resistance range UUT necessary. Connect output terminals the M191 pushing the button OUTPUT ON.
- Test voltage.
User Manual v16 19
. M191 calibrator measures the short current and displays it. UUT starts sourceDCcurrent
