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