The Solar Digest for Solar Power, Solar Energy and Photovoltaic PV News - Test and Measurement
New Line Impedance Stabilization Network for Testing Grid Connected Power Conditioners
- Published: Tuesday, 23 August 2011 17:37
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. 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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