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