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