Com-Power LI-550A Single-Line LISN 100 kHz – 108 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-550A 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 33×17.7×17.7 cm |
15x10x10 in 38×25.4×25.4 cm |
13×7.5×8 in 33x19x20 cm |
13x7x7 in 33×17.7×17.7 cm |
13x7x7 in 33×17.7×17.7 cm |
