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