In STANDBY mode the calibrator waiting for test voltage.o. 2:-;
Fig.
11.
B. Compare M191 time interval reading the UUT preset time.
Notes:
Donotdisconnectconnectionbetween UUTandM191 calibratorotherwise themeasuredvaluesarenot valid. 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.r. Switch output terminals the M191 ONby pushing the button OUTPUT ON.
C. s.0 £
Umax:0 .
F. Green LED starts light.
In this mode calibrator counts time for which the valid test voltage attached the output terminals.
- Test voltage. Select TIMER mode pushing repeatedly FUNCTION FUNCTION DOWN button until TIMERlabel
appears the display.
has been caught the calibrator during time
calibrator output terminals during calibration
User Manual v16 17
. Minimum guaranteed valid test voltage which
can caught the calibrator 100 VDC.
E. Connect UUT the output terminals.Display shows information follows (Standby mode):
MEATEST.
Calibrator displays current time interval and current test voltage.
- Accuracy the measured time interval s.229kU
OFF
Local
Grid
Test, 11a'EJe: Mode :
TIMER
ACCURACY
0.
- Vmax parameter maximum test voltage which
interval the Timer calibration. When valid test voltage identified the output terminals, the calibrator goes over RUNNING statue. Select resistance range UUT necessary.
D. Use onlytest leads with guaranteedisolationaccording totest voltage
range UUT.0 s
Umax:0 . Use test leads delivered with UUT whenever possible.8 Timer mode OFF
G.
Operating procedure
A. Select requested test voltage level UUT. Select function
TIMER UUT and set-up requested time interval. This statue signalized with the label right upper corner the display.000k U
STAND BY
Local
Gnd
Test- voltag 0.002 Mode:
TIMER
ACCURACY
0 'T/
Fig. Timer mode STANDBY
- Measured time seconds with 100 resolution.___________________________ M191 Insulation Tester Calibrator
0.
M191 goes over STANDBY. Current test voltage presented the
process
