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