{
  "$type": "site.standard.document",
  "description": "The invention relates to a method and a photovoltaic inverter () for determining the insulation resistance (R) of a photovoltaic system () relative to ground (PE). According to the invention, the voltage required for the measurement can be provided by the intermediate circuit () in the form of the…",
  "path": "/patents/1332111",
  "publishedAt": "2022-11-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/1227",
    "Fronius International GmbH"
  ],
  "textContent": "The invention relates to a method and a photovoltaic inverter () for determining the insulation resistance (R) of a photovoltaic system () relative to ground (PE). According to the invention, the voltage required for the measurement can be provided by the intermediate circuit () in the form of the intermediate circuit voltage (U), and the measuring device () is designed to actuate an input short-circuit switch (S) for short-circuiting the DC input () with the AC disconnector () open, as a result of which the intermediate circuit voltage (U) can be applied to the DC input () in the reverse direction, and the measuring device () is configured to record measured voltages (U, U) with the switch (S) of the voltage divider () open and closed, and to determine the insulation resistance (R) from the measured values of the two measured voltages (U, U) recorded with the switch (S) of the voltage divider () open and closed.",
  "title": "METHOD AND PHOTOVOLTAIC INVERTER FOR DETERMINING THE INSULATION RESISTANCE OF A PHOTOVOLTAIC SYSTEM TO GROUND"
}