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