Nominal input resistance 2. Use test leads delivered with UUT whenever possible.
I.M191 Insulation Tester Calibrator MEATEST. Activate UUT measurement, typically pushing button the UUT.o. UUT starts source current. Switch the UUT output OFF remove test voltage fromthe output terminals.
G. Select SHORT mode pushing repeatedly FUNCTION FUNCTION DOWN button until SHORT label
appears the display.9 SHORT mode
- Measured short current mA
- Accuracy the measured value %.6 SHORT Short current mode
Short current mode (SHORT) designed enable verification short current capability UUTs -
megaohmmeters.
C. Green LED starts light.
Be aware that the test voltage for high resistance
measurements dangerous and can cause
electric shock!
Testleads deliveredwiththe calibratorareapprovedforapplication upto5kVDC.r.
D. Connect UUT the output terminals.5 kQ.
H. Compare M191 reading UUT specification.
Display shows information follows:
Fig. M191 measures test current sourced UUT under short circuit condition. M191
milliampermeter has one range mAwith five-digit resolution this mode.
E.
4. Connect output terminals the M191 pushing the button OUTPUT ON.
18 User Manual
. s. Disconnect M191 output terminals using the button OUTPUT ON. Use only test leads with guaranteed isolation according test voltage
range UUT.
B.
F. Select resistance range UUT necessary.
M191 starts measure short current. M191 calibrator measures the short current and displays it.
Operating procedure
A. Usetestleads deliveredwith
UUTsforhighertest voltages. Select requested test voltage level UUT
