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