The LI-550A Line Impedance Stabilization Network (LISN) provides the necessary measurement platform for performing power line conducted emissions compliance testing as required by most worldwide standards for commercial products. The LI-550A is compliant with both CISPR 25 and CISPR 16-1-2 .
The LISN provides defined stable impedance and isolates the EUT from power source influences, thereby providing accurate and repeatable results. The LI-550A includes one pair of, separately housed, single-conductor networks, to be installed in series with each current-carrying conductor in a singlephase, dual-phase or DC power system. A second LI-550A pair can be used to accommodate 3-phase power systems (Wye or Delta configurations).
The LI-550A is equipped with Superior Electric SUPERCON® shrouded sockets at the mains (power input) and EUT (power output) ports. The matching color-coded plugs for connection to the mains and EUT wiring are included.
This LISN uses air-core inductors to prevent saturation and permeability variation. The mounting plate of the LI-550A is left unpainted in order to facilitate connection to earth ground in its installation, which is essential due to high leakage current.
Use of a Transient Limiter for impedance matching, reduction of out-of-band emissions and transient protection for your measurement instrument is highly recommended and available from Com-Power. All Com-Power LISNs are individually calibrated in compliance with the relevant requirements of CISPR 25 and CISPR 16-1-2. Impedance, Phase, Isolation, and Insertion Loss data is supplied with each unit, along with the calibration certificate.Features:
|Product Name:||Line Impedance Stabilization Network (LISN)|
|Application:||Power line conducted emissions tests|
|Specifications:||CISPR 25 / CISPR 16-1-2|
|Frequency Range:||100 kHz to 108 MHz|
|RF Connector:||50 Ω N-type (female)|
|Current Rating:||50 Amperes (AC) / 35 Amperes (DC)|
|Voltage Rating:||270 VAC (Line to Ground) / 380 VDC|
|Inductors:||5 µH (air-core)|
|Mains & EUT Connections:||Superior Electric SUPERCON® shrouded sockets|
|Insertion Loss:||< 1.5 dB (150 kHz to 30 MHz)|
|Isolation:||> 20 - 40 dB (100 kHz to 3 MHz) / > 40 dB (3 MHz to 30 MHz)|
|Dimensions:||33 cm x 17.7 cm x 17.7 cm / 13" x 7" x 7"|