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