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