Operation Manual

GMC-I Messtechnik GmbH 31
Significance of Parameters with Variable and Fixed Test Voltage
Test voltage U
nom
: Test voltage in fixed steps
(100/250/500 V, 1.00/1.50/2.00/2.50/5.00 kV)
U
var
: Variable test voltage
(100 V … 5.00 kV in 50 V steps)
U
ins
Test voltage
Limit R
ins
Limit value for insulation resistance
(If value stays below limit value: measurement failed)
Test
duration Maximum test duration in seconds
<Auto>: measurement until steady state is reached
Time in sec.: Measurement = 1 to 120 seconds
>>>>: cont. measurement: stop with MENU key
Time in min log:Measurement = 2 to 60 minutes with
automatic storage of 30 measured values at equal time
intervals including information on the current test time.
(see chapter 4.1.4 on page 32).
Significance of Parameters with Step Voltage
Test v. U
step
: Test voltage as a sequence of steps
U
(INS) END
Final value of the step sequence
(250 V … 5.00 kV in steps of 250 V)
ΔR
Lim
Maximum allowable statistical deviation from the mea-
sured mean value
Δt/250V Dwell time per step (10 s … 50 s)
Resetting parameter values to default setting, see page 22.
Note
In the event of very high insulation resistances the capacitive
influence of the person performing the measurement and/or of
the measuring cable may distort the measured value.
4.1.2 Starting the Test (U
NOM
, U
VAR
)
START
Display of results
after completion of test
4.1.3 Starting the Test (U
STEP
)
START