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