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LISN 25 Amps for MIL-STD 461

The LI-400 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-400 is compliant with MILSTD 461. The LISN provides defined stable impedance and isolates the EUT from power source influences, thereby providing accurate and repeatable results. The LI-400 includes one pair of, separately housed, single-conductor networks, to be installed in series with each current-carrying conductor in a single- phase, dual-phase or DC power system. A second LI-400 pair can be used to accommodate 3-phase power systems (Wye or Delta configurations). The LI-400 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-400 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 MILSTD 461. Impedance and Insertion Loss data is supplied with each unit, along with the calibration certificate.


Product Name: Line Impedance Stabilization Network (LISN)
Specification: MILSTD 461
Application: Power Line conducted emission tests
Frequency Range: 10KHz – 10 MHz
RF Connector: 50 Ohms N-type (female)
Current Rating: 25 Ampere AC, 17 Ampere DC
Voltage Rating: 270 VAC (Line to Ground), 380 VDC
Inductors: 50 microhenry (air-core)
Mains & EUT Connections: Superior Electric SUPERCON Shrouded sockets
Dimensions (each network): 13 × 7 × 7 inches / 33 × 17.7 × 17.7 cm
Weight (each network): 14 lbs / 6.3 kg