Amprobe AMB-110 Insulation-Resistance-Tester - Manual (Page 29)

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In this test, the insulation is measured in five equal time periods with test voltages from one fifth
of the final test voltage up to full voltage (see the Fig. 22). This function illustrates the relationship
of a materials Insulation resistance and its applied voltage.
Measurement procedure:
• Connect the test leads to the instrument and to
the test object.
• Press the START/STOP key to start the
measurement.
• Wait until set timer runs out, (the result will be
displayed).
• Wait for the object under test to discharge.
• The results can be saved by pressing the MEM
key twice, see the section of Store, Recall and
Clear Operation.
Legend of displayed symbols:
STEP VOLTAGE Name of selected function
Fil0 (Fil1, Fil2, Fil3) Filter type enabled, see the section of Configuration
5000V Set test voltage – step 125 V
U=5308V Actual test voltage – measured value
I=266nA Actual test current – measured value
19.9G e Insulation Resistance – result
C=1.2nF Capacitance of measured object
Tm:05min 00s Actual test duration
R1000V=20.0G e Last result of 1 st step
R2000V=20.0G e Last result of 2 nd step
R3000V=20.0G e Last result of 3 rd step
R4000V=19.9G e Last result of 4 th step
R5000V=19.9G e Last result of 5 th step
U1=1077V 1 st step voltage
U2=2142V 2 nd step voltage
U3=3239V 3 rd step voltage
U4=4283V 4 th step voltage
U5=5308V 5 th step voltage
Note
• Timer information is displayed from the start of the measurement until the completion of
each step measurement.
• Timer information shows the complete measurement period after the completion of the
measurement.
0
0.2U
0.4U
0.6U
0.8U
U
U
T 2T 3T 4T 5T t
Fig. 22 Step-up test voltage