strommessung in an electromagnetic component using a hilfswicklungs - conductor

摘要

strommessschaltung, which includes: a hauptwicklung with a common connection and a second hauptanschluss,with the hauptwicklung an inductance and an equivalent reihenwiderstand is a hilfswicklung,directly with the common connector is connected, and a second hilfsanschluss which, with the hilfswicklung set, the inductance of the hauptwicklung to compensateand a stromschu00e4tzer with inputs of the second hauptanschluss and second hilfsanschluss are coupled with the stromschu00e4tzer is establisheda voltage between the first and the second hauptanschluss hilfsanschluss measured and the flow in the hauptwicklung on the basis of the measured voltage and the equivalent reihenwidethe hauptwicklung rstands to appreciate, with the stromschu00e4tzer the second hilfsanschluss high eingangsimpedanz presentedso that almost no current through the hilfswicklung flows and the measured voltage is proportional to the current flowing through the hauptwicklung.