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