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