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