Power Network Application Trainer
– Insulation Analysis
215
Exercise 3: Step Voltage Test
Figure 120-3: Step voltage test measuring setup
In Step Voltage test, the insulation is measured in five equal time periods with test
voltages from one fifth of the final test voltage up to full scale. This function illustrates
the relationship of a materials Insulation resistance and its applied voltage.
Method used
Simulated condition
Expected result
Un=5kV; Timer=05:00
R1=1.94GΩ; U1=1.03kV
R2=2.59 GΩ; U1=2.02 kV
R3=3.09 GΩ; U1=3.02 kV
R4=3.66 GΩ; U1=4.01kV
R5=4.08 GΩ; U1=5,01 kV
Table 74-3: Step voltage test setup/result presentation
Measuring procedure
1. Connection set up is the same as it is performed under Exercise 1.
2. Under
MAIM MENU
MEASUREMENTS
menu select
Step Voltage Test
measurement function
Содержание MI 3298
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