Disconnect M191 output terminals using the button OUTPUT ON. Select SHORT mode pushing repeatedly FUNCTION FUNCTION DOWN button until SHORT label
appears the display. UUT starts source current.
B.9 SHORT mode
- Measured short current mA
- Accuracy the measured value %.
H.
D.o.
C. Use only test leads with guaranteed isolation according test voltage
range UUT.
I.
M191 starts measure short current. Connect UUT the output terminals. M191 measures test current sourced UUT under short circuit condition.
E. Compare M191 reading UUT specification.
F.
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. Nominal input resistance 2. Select resistance range UUT necessary.
18 User Manual
.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. Activate UUT measurement, typically pushing button the UUT. Switch the UUT output OFF remove test voltage fromthe output terminals.
4.M191 Insulation Tester Calibrator MEATEST.r.
Operating procedure
A.5 kQ. Usetestleads deliveredwith
UUTsforhighertest voltages.
Display shows information follows:
Fig. M191
milliampermeter has one range mAwith five-digit resolution this mode. s. Use test leads delivered with UUT whenever possible. Green LED starts light. Connect output terminals the M191 pushing the button OUTPUT ON
