Electro Stastic Precipitators are high voltage oil immersed transformers with
build in rectifier to rectifier the ac voltage to dc output voltage.
They are usually single or three phase transformers with a variety of Power
and ac input voltages.
The peak dc output voltage is 40,50,70, 85 and 105 kV dc.
Accordingly is the output dc current is 0.25, 0.5, 0.75, 1.05 and 2.0 A dc.