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