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