Translate The Website (Starts on Home Page)

 

PayPal, Visa, MasterCard, American Express, Discover Cards Accepted
Freedom Isn't Free   R A Mayes Logo and Home Page   Call Nationwide 1-800-742-9447
New Solar Electronics LISN  Solar Electronics Logo

 

Manufactured, Serviced and Recalibrated in North Hollywood CA


FCC Line Impedance Stabilization Networks (New Style Housing)
The F.C.C. in Part 15 Subpart J has adopted the 50 microhenry Line Impedance Stabilization Network (LISN) described in Figure 15 of the German Document VDE 0876/1/9.78 for use in performing conducted emission tests on power lines (10 KHz-30 MHz). (Five microhenry units are required for F.C.C. Part 18. See listing on back side of "LINE IMPEDANCE STABILIZATION NETWORKS" data sheet.) In selecting the appropriate LISN, the impedance-versus-frequency characteristic is the most important parameter to be considered. The impedance curve of the units closely matches the F.C.C. requirements.

 

APPLICATION

When measuring conducted radio interference voltages from active power lines to ground, it is essential to know the line impedance so that repeatable tests can be made by more than one laboratory. Artificial line impedances are specified in MIL-STD-462, FCC, VDE, CISPR, C22.4, NACSEM 5100, ANSI C63.2 and other EMI specifications.

The characteristic impedance of the 5 H  and 50 H  LISNs brackets the mean value of power line impedance which has been measured by independent researchers. These two inductance values in parallel with the 50 ohms of the EMI meter fall between the minimum and maximum line impedance values which have been measured. The mean value would be represented by a 20 H  inductor in parallel with 100 ohms.

DESCRIPTION

The Solar Electronics LISNs - Line Impedance Stabilization Network use a series inductor between the test sample and the power source to provide the impedance-versus frequency characteristic. A coaxial connector with D.C. isolation use a series inductor between the test sample and the power source to provide the impedance-versus frequency characteristic. A coaxial connector with D.C. isolation use a series inductor between the test sample and the power source to provide the impedance-versus frequency characteristic. A coaxial connector with D.C. isolation is provided for connection to the associated frequency selective EMI meter. The power source end of the inductor is bypassed to ground.

Due to the large current-carrying capability of some LISNs, it is not always practical to use a switch for changing inductance values. Instead, some models are equipped with a high current pin plug-and-jack combination for quickly connecting and disconnecting a network and substituting another. This nylon insulated pin plug and jack arrangement is a safety feature, well isolated from inadvertent short circuits, providing protection to operating personnel.

 

 

Watts - Volts   Solar Catalog

Current ratings up to 200 amperes are available in 50 H styles and 500 amperes in 5 H styles.

 

When measurements are made in a shielded room, the LISNs intended for FCC applications will also serve for VDE tests. When operating on an unfiltered power line, the VDE specifications require a filter consisting of 250 H inductor and a capacitor. This filter is included in the 24 ampere LISN, Type 9348-50-R-24-BNC, and the 50 ampere LISN, Type 8602-50-TS-50-N.

EMI specifications require one LISN in each ungrounded power lead.
Even though the neutral is considered ground, if it is not connected to chassis inside the unit under test, the lead must be tested with an LISN. Therefore, use two LISNs in DC or single phase AC applications, three LISNs for delta-connected three phase circuits, and four LISNs for Y connected three phase circuits.



 
Single line units are needed in each power lead. Use two for single phase or d.c. systems; three for delta connected three-phase lines; four for Wye connected three-phase lines. LISN WYE System LISN DELTA System

 

Specification

Inductance

Frequency Range

FCC Part 15

50 H

10 kHz - 30 MHz

FCC Part 18

5 H or 50 H

10 kHz - 30 MHz

CISPR-16

50 H

Band A for 9 kHz to 150 kHz and Band B for 150 kHz to 30 MHz

CISPR-25

5μH

100 kHz - 100 MHz

VDE 0876-16-1-2

50 H

9 kHz - 100 MHz with 250 H choke

MIL-STD 461/462 Rev C

57 H

10 kHz  - 10 MHz, 14 kHz - 4 MHz

MIL-STD 461/462 Rev C

5 H

100 kHz - 100 MHz

MIL-STD 461/462 Rev D

50 H

150 kHz  - 100 MHz with 10 F capacitor

RTCA DO-160

5 H

100 kHz  - 400 MHz

SAE J1113

5 H

150 kHz  - 65 MHz

TEMPEST

5 H

100 kHz  - 1,000 MHz

 

SOLAR Line Impedance Stabilization Networks (New Style)

cispr 16-1-2, CISPR 22, FCC, ANSI C63.4       

Type Number

Inductance

 

H

Current

 

Amps

Line/Ground Voltage

50-60 Hz 

Line/Ground Voltage

400 Hz

Case Size*

Circuit

Frequency Range

21105-50-bp-10-bnc

50 10 270 135

#1

Single

150 KHz- 30 MHz

21106-50-bp-25-bnc

50 25 270 135

#1

Single

150 KHz- 30 MHz

21107-50-ts-50-n

50 50 270 135

#3

Single

150 KHz- 30 MHz

21107-50-pj-50-n

50 50 270 135

#3

Single

150 KHz- 30 MHz

21108-50-ts-100-n

50 100 270 135

#3

Single

150 KHz- 30 MHz

21108-50-pj-100-n

50 100 270 135

#3

Single

150 KHz- 30 MHz

21114-50-ts-50-n

50 50 500 240

#3

Single

150 KHz- 30 MHz

21114-50-pj-50-n

50 50 500 240

#3

Single

150 KHz- 30 MHz

21114-50-ts-100-n

50 100 500 240

#3

Single

150 KHz- 30 MHz

21114-50-pj-100-n

50 100 500 240

#3

Single

150 KHz- 30 MHz

 

 With 50 or 60 Hz Ventilating Fan; add 7.09" (18.00 cm)

Add 3" (7.62 cm) for Base Plate

*Case Sizes

 Width x Height x Length

#1:

4.5" x 4.5" x 9.25" (11.43 cm x 11.43 cm x 23.5 cm)

#2:

7.0" x 7.0" x 8.25" (17.78 cm x 11.78 cm x 24.13 cm)

#3:

10.06" x 9.0" x 13.12" (25.72 cm x 22.86 cm x 33.34 cm)

#4:

7.53" x 7.63" x 18.97" (19 cm x 19.43 cm x 48.26 cm)

#5:

3.12" x 1.75" x 3.87" (7.94 cm x 4.44 cm x 9.84 cm)

#6:

2.75" x 2.45" x 5.7" (6.98 cm x 6.22 cm x 14.48 cm)

#7:

13.06" x 7.0" x 10.06" (33.20 cm x 17.78 cm x 25.55 cm)

Note: Unless otherwise specified, 5μH LISNs have 0.1f coupling caps; 50μH have 0.25f coupling caps

 

 

LISN Test Setup

 

Solar Website   Laplace LISNs

     

 

 

 Last Updated: July 24, 2017

  Copyright 2001- 2017  R. A. Mayes Company, Inc.

An Electro Mechanical Research and Development (EMRAD) Corporation, Company

 
     
 

All the Data Sheets on our site require Adobe Acrobat Reader! Get Abode Reader