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