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