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