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Catalogue status: Nov 4, 2016
Current AC

AC or AC/DC current monitoring components with analogue current outputs and standard voltage signal outputs.

Depending on the version, the input side can be used to measure single-phase AC currents or DC currents up to 60 A. Measurements use the RMS (transformer based) or TRMS (Hall sensor) methods.
The output side features switchable analogue DC current/voltage signals.

Converters with transformer-based couplings are used for taking cost-effective measurements of sinusoidal currents (50/60 Hz). The current being measured flows directly through the primary winding of a measuring transformer. The secondary winding supplies the electronic measuring system with a proportional current signal. Due to the power loss that occurs, this type of measurement is limited to currents up to 10A. The effective value (RMS) of the current can be measured using this method.


Hall sensors are used to carry out real-effective (TRMS) measurements on current. This method measures the magnetic flux B which is then converted into a proportional voltage, amplified and processed into a standard signal.
Hall sensor measurements are ideal for measuring large DC and AC currents with frequencies up to 1 kHz. Start-up currents from motors and current peaks cannot harm the equipment.

Measuring transducer for measuring the root mean square value (RMS) of 50/60 Hz AC currents up to 500 A according to the passive current transformer technique.
The wire (primary winding) is fed directly through the current transformer (secondary winding).
These measuring transducers can be mounted horizontally or vertically on a DIN rail.



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