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