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