Test & Measurement

Line Impedance Stabilization Network from TESEQ for conducted emissions testing of Grid Connected Power Conditioners

11th August 2011
ES Admin
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TESEQ, a leading developer and provider of instrumentation and systems for EMC emission and immunity testing, introduces a new Line Impedance Stabilization Network (LISN) for conducted emissions testing of Grid Connected Power Conditioners (GCPC). The DC-LISN-M2-25-V1 is designed for measuring unsymmetrical disturbances on DC power ports in the frequency range from 150 kHz to 30 MHz.
Enhanced LISN performance aids assessment of unsymmetrical disturbances of photovoltaic inverters

Research results have shown that a typical artificial mains V-network as described in CISPR 16-1-2 cannot be used for the assessment of unsymmetrical disturbances of a photovoltaic inverter’s DC port. CDNs based on IEC/EN 61000-4-6 are typical not specified for high common-mode currents and differential mode disturbances. Additionally, they are undefined below 150 kHz.

The TESEQ DC-LISN-M2-25-V1 provides enhanced LISN performance with a common-mode impedance of 150 Ω and a differential-mode impedance of 100 Ω. Further, the DC-LISN offers defined termination impedance in the frequency range of 1 kHz to 150 kHz.

The DC-LISN-M2-25-V1 conforms to the requirements of AK 767-11-13-2010-0079 published in December 2010 by the German standard working group 767.11.13 – EMC of Grid Connected Power Conditioners – GCPC.

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