Capacitive insulators with supporting (TSK) are used as high voltage side capacity. Main purpose is using it for voltage detecting systems between the medium voltage section and the interface.
Capacitive insulators correspond in their measurements and physical properties to conventional DIN insulators without coupling capacitance. Therefore it can replace them.
Another point is in conjunction with the capacitances C2 of the downstream devices. Actually the capacitance C1 of the capacitive insulator forms a capacitive voltage divider. The insulators can be combined with the connecting leads to form HR/LRM systems (high and low resistance).
And we must mention, LRM systems require additional measuring circuit capacitances C2m.
