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INSTRUCTION MANUAL

 

LI-150C 

LINE IMPEDANCE STABILIZATION NETWORK 

 

19121 El  T oro R d   ●  S il vera d o, Ca lifo rnia  926 76   ●   (94 9)  459 - 9600    ●  com - p ower.com

 

                

 

 

      REV021317   

5.0

 

P

RODUCT 

D

ESCRIPTION

 

5.1 Overview 

The  LI-150C  Line  Impedance  Stabilization  Network  is  specifically  designed  to 
provide  necessary  measurement  platform  for  performing  power  line  conducted 
emissions  (disturbance  measurements)  compliance  testing  as  required  for  FCC, 
CISPR,  CE  and  other  worldwide  standards  for  commercial  products.    It  is  fully 
compliant with the requirements of both CISPR 16-1-2 and ANSI C63.4.

 

  

 

 The LI-150C performs each of the following functions during the measurement: 

  provides  a  defined,  stable  impedance  throughout  the  measurement 

frequency range; 

• 

isolates the EUT and measurement circuit from the power source, thereby 
minimizing its influence on the measurements; and, 

• 

couples  the  disturbance  voltages  to  the  coaxial  measurement  port  for 

connection  to  the  measuring  instrument  like  EMI  Receiver  or  Spectrum 
Analyzer. 

5.2 Product Setup 

Before initiating use of LISN, ensure that, 

 

 PE conductor is connected to ground. 

 The ventilation openings are unobstructed. 

•  N

o  signal  or  operating  voltages  above  the  permissible  limits  given  in 

specification. 

• The LISN’s power input port is

 connected to an appropriate power source 

employing properly rated mains protection, as over current protection is 
not provided in the LISN. 

 

Failure to comply with any of these points may damage the equipment and/or 
pose an electrical hazard. 

5.2.1  Typical connection diagrams 

The  LISNs  can  be  used  with  single  phase  power  sources  with  one  set  of 
LISNs and also three phase power sources (requires two sets of LISNs). Given 
below 

are the typical connection setup’s for each configuration.

 

 

 
 
 
 

Figure 1: Single Phase connection with one set of LISN

 

Содержание LI-150C

Страница 1: ...MANUAL LI 150C LINE IMPEDANCE STABILIZATION NETWORK 19121 El Toro Rd Silverado California 92676 949 459 9600 com power com REV021317 INSTRUCTION MANUAL For LINE IMPEDANCE STABILIZATION NETWORK Model L...

Страница 2: ...cription 10 5 1 Overview 10 5 2 Product Setup 10 5 3 Front Rear Panel Marking 11 6 0 LISN Theory 13 7 0 Typical Performance Data 14 8 0 Warranty 16 8 1 Maintenance 16 List of Figures Figure 1 Single P...

Страница 3: ...front and rear panel ports controls and indicators product specifications safety precautions operational instructions and warranty information and guidelines and instructions for its proper usage Info...

Страница 4: ...Networks CDN Comb Generators Current Probes Emissions Test Systems Conducted Immunity Test Systems Impedance Stabilization Networks ISN Line Impedance Stabilization Networks LISN Antenna Masts Near Fi...

Страница 5: ...e product The yellow triangle with a lightning bolt indicates an alert to the user that un insulated dangerous voltages are present within the product enclosure and on output connectors These voltages...

Страница 6: ...items ISO 17025 calibration data and certificate External transient limiter model LIT 153 3 4 General Safety Instructions The following safety instructions have been included in compliance with safet...

Страница 7: ...under EN 61010 1 standard safety requirements for electrical equipment for measurement control and laboratory use In addition the basic insulation required for a category I protection device cannot be...

Страница 8: ...b upon the instrument or use it as a step or ladder ENVIRONMENTAL CONDITIONS This equipment is designed for indoor use Ambient temperature range during operation should be between 5 C to 40 C STORAGE...

Страница 9: ...6 1 2 Edition 2 0 2014 03 ANSI C63 4 2014 Number of lines Two lines Max current rating 50 Amp AC 35 Amp DC Max Voltage rating 270 VAC 50 60 Hz Line to Ground 380 VDC Inductor type 50 H EUT Power conne...

Страница 10: ...eby minimizing its influence on the measurements and couples the disturbance voltages to the coaxial measurement port for connection to the measuring instrument like EMI Receiver or Spectrum Analyzer...

Страница 11: ...arth leakage current the device cannot be connected to any power source protected by either a ground fault circuit interrupter GFCI circuit breaker or residual current devices RCDs The power source mu...

Страница 12: ...3 4 EMI measurement Port The LI 150C provides a 50 N Type female connector to connecting the Spectrum analyzer or EMI receiver for making conducted noise measurements The shielding connection of the...

Страница 13: ...wever the power to the equipment passes through the LISN with minimal attenuation This filter is comprised of a single stage low pass LC filter The inductors L used in the LI 150C are air core type to...

Страница 14: ...pared to ANSI C63 5 CISPR 16 1 2 requirements Figure 7 Typical Phase compared to CISPR 16 1 2 requirements 20 30 40 50 60 70 0 1 1 10 100 Impedance ohms Frequency MHz LISN Impedance CISPR 16 1 2 Ed 1...

Страница 15: ...om power com REV021317 Figure 8 Typical Isolation compared to CISPR 16 1 2 requirements Figure 9 Typical Insertion Loss 20 30 40 50 60 70 80 90 100 0 1 1 10 100 Isolation dB Frequency MHz LISN Isolati...

Страница 16: ...directly or indirectly from the use or handling of this product or any inability to use this product separately or in combination with any other equipment When requesting warranty services it is recom...

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