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