Overview
Teseq introduces a new Line Impedance Stabilization Network (LISN) for conducted emissions testing of
Grid Connected Power Conditioners (GCPC). The DC-LISN-M2-100 is designed for measuring 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 can not 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 DC-LISN-M2-100 provides enhanced LISN performance with a common-mode impedance of 150 Ω
and a differential-mode impedance of 100 Ω. Depending on the switch position, the LISN works as V, Y
or Delta shape LISN. Further, the DC-LISN offers defined termination impedance in the frequency range
1 kHz to 150 kHz.
The DC-LISN-M2-100 conforms to the latest requirements of the international standard working group
MT GCPC: GRID CONNECTED POWER CONDITIONERS.
Features & Specifications of Teseq DC-LISN-M2- 100:
- Nominal voltage: 1000 VDC (between the lines)
- Max. operating voltage: 1500 V (VDC + VAC ripple voltage)
- Max. CM voltage ≤100 Hz: 750 VDC, 500 VAC (line to ground)
- Test voltage: 2 kV, DC, 2 sec (line to ground)
- Voltage drop: 3 V @ 100 A
- CM decoupling capacitance: <100 nF
- Nominal current (CM + DM): 100 A with fans on
- Max. operating current (CM + DM): 150 A with fans on, 30 min
- Mains sockets EUT / AE: butterfly screw for binding posts with flat clamp
- RF socket: N, 50 Ω
- Frequency range: 150 kHz to 30 MHz ; 1 kHz to 150 kHz
- Common-mode impedance: 150 Ω ±20 Ω ≥ 10 Ω (AE open)
- Phase angle: 0° ± 40° not specified
- Differential-mode impedance: 100 Ω ±20 Ω ≥ 10 Ω (AE open)
- Phase angle: 0° ± 40° not specified
- Voltage division factor: 20 dB ± 2 dB > 68 dB to > 18 dB
- Insertion Loss (EUT – AE, CM): > 20 dB decreasing with 40 dB / dec.
- Insertion Loss (EUT – AE, DM): > 20 dB decreasing with 40 dB / dec.
- LCL: > 26 dB > 26 dB (10 kHz to 150 kHz)
- Discharge resistors: >1.5 MΩ
