Patent ID: 8023550
Filing Date: 2011-09-20
Classification: H05B

Abstract:
1. A reactance ballast device comprising an induction coil and a free-standing on-load tap changer; wherein the on-load tap changer is formed and designed to set the reactance of the induction coil on load; wherein the induction coil is provided with a number of tapping points, each of which has an assigned turns number of the induction coil; wherein the on-load tap changer comprising a number of input contacts, at least one output contact, a switching element for connecting at least one input contact to an output contact, and a container with an insulating material, the container accommodating the switching element; wherein the switching element has a number of inputs and at least one output, at least one output having an assigned branching node at which at least two branches of a bridge circuit converge, wherein each branch is capable of being deactivated at a switching point, wherein each branch is capable of being connected variably to the inputs, and wherein the branches are connected to a load switching point via a cross connection; and wherein the number of tapping points of the induction coil corresponds to the number of input contacts of the on-load tap changer with each tapping point being connected to an input contact.