SW 9605 Current Transformer, shielded, 9 kHz - 80 MHz

 The SW 9605 Current Clamp was designed to measure RF-currents on conductors or conductor bundles with a maximum diameter of 23 mm. The conversion ratio is 1:1 in the nominal frequency range, therefore the receiver reading in dBμV corresponds directly to the current in dBμA. This corresponds to a transfer-impedance of 1 W or an insertion loss of 34 dB in the 50 W system. The clamp can also be used below the nominal frequency range, in this case, the transducer of the diagram has to be considered. Above 30 MHz the clamp can be used up to 80 MHz with slightly increased measurement uncertainty.

Application:

The SW 9605 Current Clamp measures RF common mode currents (asymmetrical currents) on single conductors or conductor bundles. Depending on the low-frequency current saturation effects may occur, which shifts the lower frequency characteristics to somewhat higher frequencies. Only the sum of currents under consideration of sign is of importance, therefore complete conductor bundles are less critical than single conductors. To estimate the saturation effects depending on the low frequency current the frequencies with an increase of 1 dB insertion loss is given in the data.