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