G mode
ls
R1
connected.Preset resistances R0, R1, R2, which are connected the output terminals time points t0, t1, t2,
t3. Use test leads delivered with UUT whenever possible._________________________________________M191 Insulation Tester Calibrator
Notes:
Testleadsdeliveredwiththe calibratorareapprovedforapplication to5kVDC.
User Manual v16 23
.
Time sequence
Following drawing shows meaning and way influence the parameters and :
RUNNING mode
Input terminals
switched on. R3
resistance is
connected.o. Use only test leads with guaranteed isolation according test voltage
range UUT.
- Accuracy actually connected resistance %.
Calibrator in
RUNNING mode
until output terminlas
are disconnected
R
y
STANDBY
mode
R1 resistance is
selected. Connect UUT the output terminals.
Calibrator starts to
count time
t2
t (s)
t3
Fig. Input
terminals are
switched on.
unts time
f
RUNNING mode
Input terminals
switched on. Calibrator
counts time interval
R
R
RUNNING mode
Input terminals
switched on.
Be aware that the test voltage for high resistance
measurements dangerous and can cause
electric shock!
MEATEST. The time which has been elapsed after the starting RUNNING sequence.
to
RUNNING mode
Test voltage from
UUT identified.r. Reading currently applied test voltage displayed.
- Test voltage. R2
resistance is
connected. s. R0
resistance is
connected.
- Total time.13 TimesequenceinPSPmode
Operating procedure
A.
resistance is
Calibrator co
interval t2. Calibrator
counts first time
r (n)
RUNNIN
Input termina
switched on. Usetestleadsdeliveredwith
UUTsforhighertest voltages
