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