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