Motor Starting Reactor, Dry type , Naturally air cooled equipment prior to assembly in an IP31 non-ferrous steel enclosure. System 11000 volts, 3 phase, 50 Hz , Inductance  8.5 / 11 ohms per phase, rating 400 Amperes

In addition to the dry type example shown here equipments can also be designed for inclusion in  robust sheet steel transformer tanks  mineral transformer oil or synthetic fluid cooled.    

Liquid cooled equipment have terminations and tapping points brought out to bushings located in large air filled terminal chambers.