Method for measuring DC currents at a plurality of different measurement points of a DC network that is formed from current conductors that are connected to one another, and at which measurement points first DC current transformers are arranged that in each case convert the DC current flowing through the respective current conductor at the measurement point into a proportional transformer output current that in each case flows via a first individual input, which is connected to the DC current transformer, of a measuring apparatus that ascertains a respective current measured value therefrom, wherein the respective first DC current transformer and the associated measuring apparatus in each case form a current transformer-measurement combination, characterized in that each measuring apparatus of a respective current transformer-measurement combination has a second individual input to which a second current transformer can be temporarily connected for a short time, by which the DC current is converted into a proportional transformer output current with greater accuracy than by the respective first DC current transformer, wherein the second current transformer is in each case arranged at the same measurement point as the first DC current transformer of the measuring apparatus, and therefore captures the same DC current, is connected to the second individual input and a comparison measurement is carried out, wherein the current measured values ascertained by means of the two current transformers are compared with one another by virtue of a correction characteristic value being ascertained for the measurement with the first DC current transformer and being used in each case for the measurement of the first DC current transformer if the second current transformer is removed again from the respective measuring apparatus following the comparison, with the result that only a single second current transformer with the greater transformer accuracy is required. in that each measuring apparatus of a respective current transformer-measurement combination has a second individual input to which a second current transformer can be temporarily connected for a short time, by which the DC current is converted into a proportional transformer output current with greater accuracy than by the respective first DC current transformer, wherein the second current transformer is in each case arranged at the same measurement point as the first DC current transformer of the measuring apparatus, and therefore captures the same DC current, is connected to the second individual input and a comparison measurement is carried out, wherein the current measured values ascertained by means of the two current transformers are compared with one another by virtue of a correction characteristic value being ascertained for the measurement with the first DC current transformer and being used in each case for the measurement of the first DC current transformer if the second current transformer is removed again from the respective measuring apparatus following the comparison, with the result that only a single second current transformer with the greater transformer accuracy is required. <EOS>