Knowledge base
Fundamentals, selection guides and calculators for current measurement
18 articles
VA power calculator
Determines the required VA rating from cable length, cross-section and the burden of the connected instruments.
Transformer finder
Step by step to the right current transformer: what for, how mounted, which current – you end up with real article numbers from our range.
Cable cross-section for the burden
Which cross-section does the measuring cable need so that the rated burden is sufficient? The counterpart to the VA calculator.
Which accuracy class do I need?
Permissible current error and phase displacement of the classes to IEC 61869-2 – including partial load, where the differences are largest.
Check short-circuit withstand
Will the transformer withstand the fault current of your installation? Converts the rated short-time current to your clearing time.
Plug-on current transformers for precise measurement
Plug-on current transformers are ideal for safely transforming primary currents into measurable secondary values.
Wound current transformers for flexible primary currents
Wound current transformers are ideal when flexible primary design and custom ratios are required.
Summation current transformers for differential and residual current measurement
Summation transformers capture the vector sum of multiple conductor currents and are essential for protection concepts.
4-20 mA transmitters for reliable signal transmission
4-20 mA transmitters provide robust and noise-resistant signal transmission over longer distances.
MID energy meters for transparent energy monitoring
MID-compliant energy meters are ideal for transparent billing and professional energy monitoring.
Digital panel meters for switchboards and distribution cabinets
Digital panel meters provide readable values for current, voltage, power and process variables.
Analog meters for robust industrial applications
Analog meters are proven solutions when robust technology and quick visual indication are required.
Shunts for high-current measurement
Shunts enable precise high-current measurement through defined voltage drops.
Hour meters for maintenance and runtime transparency
Hour meters provide transparent runtime data and support condition-based maintenance.
Grid protection relays for secure grid integration
Grid protection relays monitor electrical parameters and trigger safe disconnection in fault conditions.
Rogowski coils for flexible current measurement
Rogowski coils are flexible current sensors that measure the magnetic field around a conductor for non-contact current detection. They are particularly suited for high currents and hard-to-reach installation points.
Protective current transformers for system protection
Whereas measuring transformers should saturate quickly above their operating current range, protective current transformers require saturation as far outside this range as possible. This ensures correct signal transmission even at high fault currents.
Cable conversion current transformers for retrofit installation
Cable conversion current transformers are the ideal solution when CTs need to be installed retrospectively without interrupting the primary circuit. The compact design and easy mounting with UV-resistant cable ties make them highly practical.