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