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Mutual Coupling

CPC 100

Universal primary injection test set for substation assets

CP CU1

Coupling unit for injection into powerlines and HV cables

Benefits of this solution

Accurate distance protection relay settings

For accurate distance protection relay settings of double circuit lines, it is not only important to measure the sequence impedance but also the mutual coupling impedance.

Mutual coupling measurement

By connecting the CPC 100 and CP CU1 to just one circuit, you can measure the mutual coupling of the double circuit line and the sequence impedance of the single circuit via a clever measurement protocol.

Robust against noise

The CPC 100 + CP CU1 system is able to perform measurements at variable frequencies, which also makes it a robust tool against noise from surrounding live parts or neighboring lines.

Safe testing

In the case of unexpected electrical events on overhead transmission lines, such as lightning, the included CP GB1 and CP CU1 protect you and your equipment.

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“The accurate CPC 100 + CP CU1 enables convenient impedance measurements, including the mutual coupling impedance on double circuit lines, while providing a high level of safety and fast test procedure.”

"Extraordinary support starts with the very first contact. We always communicate from technician to technician, worldwide and around the clock."

The electrical power supply must be working reliably 24/7. We support you with free, professional technical support. Close to 40 support engineers and more than 100 training courses worldwide underline this fact. With service centers on all continents and a worldwide network of sales partners we are always close to you.