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