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