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