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