Measuring with a Rogowski coil
The Rogowski coil is a toroidal coil without a ferromagnetic core. It is used as a component in electronic measuring devices to measure alternating current.
Advantages of the current sensor:
Each transformer can be optimized for its task and operating points
Transformers for power generation
Transformers for measurement
Higher accuracy of current measurement and therefore higher accuracy for ground-fault currents
A power measurement is made possible by the more exact and more linear measurement of the current together with the integrated voltage tap in the molded case circuit breaker.
Accuracy levels of the specified measured values of the 8-series ETU, including the integrated current sensors
Interpretation of measured values
Measured current and voltage values are always positive.
The "normal" direction of energy flow of the 3VA molded case circuit breaker is top down (can also be adjusted using the powerconfig software), corresponding to operation in quadrants Q1 and Q4. If the molded case circuit breaker is supplied from below, it is operated in quadrants Q2 and Q3.
The following table provides an overview of the setting values: