Arc suppression coil and method for grounding
AssigneeEnsto Oy
InventorJyrki PENTTONEN
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Abstract
An arc suppression coil for a three-phase electric power network comprises a transformer core having three limbs: a first limb, a second limb and a third limb. The transformer core defines an additional path for carrying magnetic flux between the opposite ends of the three limbs. Three separate phase windings comprise a first phase winding wound at the first limb of the transformer core, a second phase winding wound at the second limb of the transformer core and a third phase winding wound at the third limb of the transformer core.
Claims16
An arc suppression coil for a three-phase electric power network comprising:
- a transformer core having three limbs, which comprise a first limb, a second limb and a third limb, wherein the transformer core defines an additional path for carrying magnetic flux between the opposite ends of the three limbs;
- and
- three separate phase windings comprising a first phase winding wound at the first limb of the transformer core, a second phase winding wound at the second limb of the transformer core and a third phase winding wound at the third limb of the transformer core.
A method of grounding a three-phase electric power network, wherein the three phase lines of the three-phase electric power network are connected to ground through an arc suppression coil comprising a transformer core having a separate limb and a separate phase winding for each of the three phases of the three-phase electric power network for facilitating a grounding connection, the transformer core defining also an additional path for carrying magnetic flux between the opposite ends of each of the separate limbs.
Dependencies are inferred from the claim text.