The CP CU1 is a high-power coupling unit that enables safe and reliable testing of power lines and grounding systems under real grid conditions. When used with the CPC 100, the CP CU1 provides controlled signal injection with up to 5 kVA output, ensuring stable measurements even on long lines. Its galvanic isolation and robust safety concept allow a secure connection to de-energized lines, even in the presence of induced voltages from neighboring active systems. Combining it with the CP GB1 grounding box safely dissipates fault currents up to 30 kA.
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