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