Activate UUT measurement, typically pushing button the UUT.
F. Select SHORT mode pushing repeatedly FUNCTION FUNCTION DOWN button until SHORT label
appears the display.
Display shows information follows:
Fig.
Operating procedure
A. s. Select requested test voltage level UUT.
Be aware that the test voltage for high resistance
measurements dangerous and can cause
electric shock!
Testleads deliveredwiththe calibratorareapprovedforapplication upto5kVDC. M191 calibrator measures the short current and displays it.o.
4. Compare M191 reading UUT specification.
D. Nominal input resistance 2.9 SHORT mode
- Measured short current mA
- Accuracy the measured value %.
H. Connect output terminals the M191 pushing the button OUTPUT ON.
I. Use only test leads with guaranteed isolation according test voltage
range UUT.r.5 kQ.
B. Select resistance range UUT necessary.
18 User Manual
. Usetestleads deliveredwith
UUTsforhighertest voltages. Switch the UUT output OFF remove test voltage fromthe output terminals.M191 Insulation Tester Calibrator MEATEST. Connect UUT the output terminals. M191
milliampermeter has one range mAwith five-digit resolution this mode. Green LED starts light. M191 measures test current sourced UUT under short circuit condition.
M191 starts measure short current.
G. Use test leads delivered with UUT whenever possible.6 SHORT Short current mode
Short current mode (SHORT) designed enable verification short current capability UUTs -
megaohmmeters.
C. UUT starts source current. Disconnect M191 output terminals using the button OUTPUT ON.
E
