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