{
  "$type": "site.standard.document",
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  "description": "A method and apparatus for controlling an arc suppression device of a three-phase electric network, the arc suppression device having an adjustable admittance connected between a neutral point of the three-phase electric network and earth, the apparatus being configured to perform a current…",
  "path": "/patents/1114867",
  "publishedAt": "2026-05-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/00125",
    "ABB Schweiz AG"
  ],
  "textContent": "A method and apparatus for controlling an arc suppression device of a three-phase electric network, the arc suppression device having an adjustable admittance connected between a neutral point of the three-phase electric network and earth, the apparatus being configured to perform a current injection into the neutral point of the three-phase electric network by using a frequency different from a frequency of the three-phase electric network, obtain a value of a zero-sequence impedance of the three-phase electric network and/or obtain a value of a zero-sequence admittance of the three-phase electric network, and determine, based on the obtained value of the zero-sequence impedance and/or based on the obtained value of the zero-sequence admittance, whether to initiate a tuning of the arc suppression device of the three-phase electric network.",
  "title": "METHOD AND APPARATUS FOR CONTROLLING ARC SUPPRESSION DEVICE"
}