2:-;
Fig.___________________________ M191 Insulation Tester Calibrator
0.
M191 goes over STANDBY. Select TIMER mode pushing repeatedly FUNCTION FUNCTION DOWN button until TIMERlabel
appears the display.
11. This statue signalized with the label right upper corner the display. Switch output terminals the M191 ONby pushing the button OUTPUT ON. When the test voltage disconnected UUT, calibrator stops operation, goes over statue OFF,
disconnect output terminals and hold value measured time interval and maximum test voltage which has
been detected during the period.o. Select resistance range UUT necessary.
F.000k U
STAND BY
Local
Gnd
Test- voltag 0.
- Vmax parameter maximum test voltage which
interval the Timer calibration.
Notes:
Donotdisconnectconnectionbetween UUTandM191 calibratorotherwise themeasuredvaluesarenot valid.
B.8 Timer mode OFF
G.
E.
D.0 £
Umax:0 .
In this mode calibrator counts time for which the valid test voltage attached the output terminals.002 Mode:
TIMER
ACCURACY
0 'T/
Fig. Select requested test voltage level UUT.
- Test voltage. Select function
TIMER UUT and set-up requested time interval. Timer mode STANDBY
- Measured time seconds with 100 resolution. Minimum guaranteed valid test voltage which
can caught the calibrator 100 VDC.
In STANDBY mode the calibrator waiting for test voltage.Display shows information follows (Standby mode):
MEATEST. Connect UUT the output terminals.
Calibrator displays current time interval and current test voltage. Use test leads delivered with UUT whenever possible.
C.229kU
OFF
Local
Grid
Test, 11a'EJe: Mode :
TIMER
ACCURACY
0. Compare M191 time interval reading the UUT preset time.
has been caught the calibrator during time
calibrator output terminals during calibration
User Manual v16 17
. When valid test voltage identified the output terminals, the calibrator goes over RUNNING statue. Current test voltage presented the
process. Use onlytest leads with guaranteedisolationaccording totest voltage
range UUT.0 s
Umax:0 .
Operating procedure
A.
- Accuracy the measured time interval s. Green LED starts light.r. s
