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