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