»  Categories   »      LISN   »    EMC / EMI  

image enlarge

Com-Power LI-125A Single-Line LISN 150 kHz 30 MHz

Description

Line impedance stabilization networks (LISNs) are utilized during conducted emissions as well as susceptibility testing. They are specified in the EMI test requirements of various regulatory agencies, such as FCC, CISPR, FAA and DoD. Com-Power manufactures a line of LISNs which meet most specifications required by these agencies.

One LISN is required for each line. Therefore, each line is separated by an aluminum enclosure which minimizes RF interference, facilitates line isolation and provides use flexibility to choose any number of lines depending on number of phases. The standard models are supplied as a pair for 2 wire applications.

All LISNs manufactured by Com-Power use air-core coils to prevent saturation and permeability variation. Therefore, they provide stable performance over time. The bottom mounting plate of the LISNs has an unpainted, conducive surface. This allows the LISNs to be electrically bonded to the ground plane during the test.

Features

  • Single line design for flexibility
  • Coils matched to application
  • RF Shielding to minimize external interference
  • Individually Calibrated

Com-Power LI-125A Application

The most important function of a LISN is to provide input power impedance of the EUT that is constant and independent of the line impedance. As a result, the test engineer will be able to gather consistent test data. In addition the LISNs prevent the EMI receiver from detecting the noise emanating from other equipment on the power line.

Standard Configuration

Two LISNs (separate assembly for each line)

  • 4 Superior Connectors
  • Individual Calibration Data
  • Manual & Certification of Calibration

Specifications

Application Table

Model

LI-125

LI-150

LI-325

LI-400

LI-550

FCC

X

X

 

 

 

CISPR

X

X

 

 

 

CE/EN/IEC

X

X

 

 

 

VCCI

X

X

 

 

 

AUSTEL

X

X

 

 

 

MIL-STD

 

 

X

X

 

FAA

 

 

X

 

 

CISPR 25

 

 

 

 

X

Com-Power LISNs Specifications

Model

LI-125

LI-150

LI-325

LI-400

LI-550

Frequency

150kHz-30MHz

150kHz-30MHz

10kHz-400MHz

10kHz-400MHz

100kHz–108MHz

Lines

2

2

2

2

2

Max (current)

25A

50A

25A

25A

50A

Max (voltage)

270VAC/380VDC

270VAC/380VDC

270VAC/380VDC

270VAC/380VDC

270VAC/380VDC

Power Frequency

60 / 50 Hz

60 / 50 Hz

DC-400 Hz

DC-400 Hz

60 / 50 Hz

Inductor

50 µH Air Core

50 µH Air Core

50 µH Air Core

50 µH Air Core

50 µH Air Core

RF Connector

50Ω N (f)

50Ω N (f)

50Ω N (f)

50Ω N (f)

50Ω N (f)

I/O Connectors

Superior Plug

Superior Plug

Superior Plug

Superior Plug

Superior Plug

Weight

25 lbs. / 11.3 kg

14 lbs. / 6.3 kg

5 lbs. / 2.2 kg

14 lbs. / 6.3 kg

14 lbs. 6.3 kg

Size

13x7x7 in

33x17.7x17.7 cm

15x10x10 in

38x25.4x25.4 cm

13x7.5x8 in

33x19x20 cm

13x7x7 in

33x17.7x17.7 cm

13x7x7 in

33x17.7x17.7 cm

Standards

CISPR
CISPR 11
CISPR 14 - 1
CISPR 14 - 2
CISPR 14 - 2
CISPR 16 - 1
CISPR 16 - 2
CISPR 16 - 3
CISPR 16 - 4
CISPR 22
CISPR 24
IEC
IEC/TR EN 61000 - 1 - 1
IEC/TR EN 61000 - 2 - 1
IEC/TR EN 61000 - 2 - 3
IEC EN 61000 - 3 - 2
IEC EN 61000 - 3 - 4
IEC/TC EN 61000 - 3 - 5
IEC EN 61000 - 4 - 2
IEC EN 61000 - 4 - 3
IEC EN 61000 - 4 - 4
IEC EN 61000 - 4 - 5
IEC EN 61000 - 4 - 6
IEC EN 61000 - 4 - 7
IEC EN 61000 - 4 - 8
IEC EN 61000 - 4 - 9
IEC EN 61000 - 4 - 11
European
EN 50 081 part 1
EN 50 081 part 2
EN 55 011
EN 55 013
EN 55 014
EN 55 015
EN 55 020
EN 55 022
EN 55 024
EN 50 082 part 1
EN 50 082 part 2
EN 50 093
American
FCC Part 15
MIL-STD - 461E