2
III. Working principle
The equipment is designed by using the two-stage transformer with the highest
accuracy, which overcomes the disadvantage that the rear plate of parallel multi plate
induction voltage divider has a great impact on the load of the front plate and the
disadvantage that the series type increases an isolation error and the input impedance is
not high.The schematic diagram of two-stage transformer type multi disk induction voltage
divider is shown on the following pageIt can be seen from the figure that the multi disk
inductive voltage divider is composed of multiple two-stage inductive voltage dividers in
parallel. The 1 / 10 section of the previous stage proportional winding connects a section
of voltage to both ends of the next stage proportional winding through the double pole
switch, forcing the next disk to be 1 / 10 of the voltage of the previous disk.Due to the
excitation winding, the next disk is divided into the front disk
2.
The circuit has little influence and eliminates the isolation error, so it can obtain high
accuracy.
