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Article 13

Suggested Generic Level 6 Specification



SPECIFICATION

HIGH SPEED LAN COMMUNICATIONS
PLENUM CABLE

ENHANCED PERFORMANCE CATEGORY 5
WITH LIMITED-COMBUSTIBLE WIRE
INSULATION

HORIZONTAL UNSHIELDED TWISTED
FOUR PAIR (UTP)*



* This specification conforms to the electrical requirements
  of Anixter Level 6. For more info, see the Anixter Levels '97 program.

TABLE OF CONTENTS

Section

Subject
1.0

Engineering Drawing and Abstract
2.0

Scope
3.0
Physical
3.1
Conductor
3.2
Conductor Insulation
3.3
Pair Assembly
3.4
Outer Jacket
3.5
Color Codes
3.6

Cable Marking and Identification
4.0
Mechanical
4.1
Conductor Elongation
4.2
Cable Breaking Strength
4.3

Cable Bend Radius
5.0
Fire Performance
5.1
National Electrical Code
5.2

Potential Heat Requirement for Limited - Combustible Materials
6.0
Transmission
6.1
Capacitance Unbalance: Pair to Ground
6.2
Input Impedance
6.3
Attenuation to Cross Talk Ratio (ACR)
6.4
Propagation Delay
6.5
Propagation Delay Skew
6.6

Longitudinal Conversion Loss (LCL)
7.0

Reference Documentation

1.0 Engineering Drawing and Abstract



ELECTRICAL SPECIFICATIONS SUMMARY
Input Impedance
100 Ohms ±15 Ohms from 1-100 MHz.
100 Ohms ±22 Ohms from 100-200 MHz.
Minimum ACR
Equal to or greater than 10 dB at 155 MHz (90 meter worst pair)
Equal to or greater than 0 dB at 200 MHz (90 meter worst pair)
Equal to or greater than 10 dB at 150 MHz (100 meter power sum)
Equal to or greater than 0 dB at 165 MHz (100 meter power sum)
Maximum Propagation Delay
5.7 ns/m at 100 MHz, max.
Maximum Delay Skew
25 ns at 100 meters
Minimum LCL
43 dB at 64 kHz

CABLE CONSTRUCTION
Conductor
24 AWG solid annealed copper
Primary Insulation
FEP fluoropolymer resin on each pair
Jacket
Thermoplastic. Must meet all requirements for the expected life of the cable.

2.0 Scope

This specification defines the requirements for commercially available high performance Category 5 plenum - rated LAN communications cable. The cable design described herein exceeds minimum ANSI / TIA / EIA 568A Category 5 and ISO / IEC 11801 Class D standards in critical transmission characteristics and provides additional specifications for conductor insulation. This specification provides more ACR margin (headroom) at transmission frequencies up to 155 MHz, better electrical balance and temperature / humidity stability for superior long term performance. In addition, this specification calls for a limited - combustible* wire insulation that meets the fire safety stipulation of the NFPA 90A Standard requiring limited - combustible materials in products for use in building plenums.

This specification conforms to the electrical requirements of Anixter Level 6.

* This term is used per NFPA 259 utilizing the maximum limits for potential heat of 3,500 Btu/lb (8.141 mJ/kg) per NFPA 90A.

3.0 Physical

In addition to the applicable requirements of ANSI / ICEA S-80-661 and UL 444, the physical design of the cable shall meet sections 3.1 to 3.6 inclusive.

3.1
Conductor

Conductor shall be 24 AWG solid bare copper and shall conform to the applicable requirements of ANSI / ICEA S-80-661. Minimum dimensions and maximum strand length shall be in accordance with UL 444. Conductor shall also conform to solid annealed copper wire in accordance with ASTM B 3. The section "Dimensions and Permissible Variations" of ASTM B 3 shall be waived.

3.2

Conductor Insulation

Each copper conductor shall be insulated 100% with fluorinated ethylene propylene (FEP) polymer. There shall be no splices of the insulated conductor.

3.3

Pair Assembly

Cable shall consist of 4 insulated conductor pairs. The pair twist length shall be selected by the manufacturer to assure compliance with the transmission requirements of section 6.0.

3.4

Outer Jacket

The core, consisting of 4 insulated conductor pairs, shall be protected with an overall thermoplastic covering generally referred to as an "outer jacket." The jacketing material selected by the manufacturer must meet and maintain the physical, mechanical and electrical requirements of ASTM D 4565 and this specification for the expected life of the cable. (Note: When a limited combustible cable is preferred, FEP may be specified as the jacketing material.)

3.5

Color Codes

The color code shall be as shown in Table 3.5.

Table 3.5
Color Codes for Horizontal 100 ohm UTP Cable
Conductor Identification
Color Code
Abbreviation

Pair 1
White-Blue (NOTE 1)
Blue (NOTE 2)
W-BL
BL
Pair 2
White-Orange (NOTE 1)
Orange (NOTE 2)
W-O
O
Pair 3
White-Green (NOTE 1)
Green (NOTE 2)
W-G
G
Pair 4
White-Brown (NOTE 1)
Brown (NOTE 2)
W-BR
BR
Note 1: The conductor insulation is white, and a colored marking is added for identification. For cables with tightly twisted pairs (all less than 38.1 mm [1.5 in.] per twist) the mate conductor may serve as the marking for the white conductor.

Note 2: A white marking is optional.

3.6

Cable Marking and Identification
The cable jacket shall be legibly marked at least every 24 in. by surface printing. The following information shall be provided:
--Manufacturer's Identification
--Type of Cable Construction
--UL or ETL Verification
--CMP Identification Code
--Cable Footage Marker

4.0 Mechanical

4.1
Conductor Elongation

Minimum elongation of conductors from a finished cable shall be in accordance with ICEA S-90-661.

4.2

Cable Breaking Strength

Finished cable shall have a minimum breaking strength of 400 N (90 lbf) measured in accordance with ASTM D 4565.

4.3

Cable Bend Radius

Finished cable shall withstand a bend radius of 25.4 mm (1 in.) at a temperature of -20°C±1°C without jacket or insulation cracking when tested in accordance with ASTM D 4565.

5.0 Fire Performance


5.1

National Electrical Code--NFPA 70A

The finished cable shall be plenum - rated in accordance with the requirements of National Electrical Code NEC Article 800, UL 444, NFPA 262 (UL 910) and applicable CSA standards.

5.2

Potential Heat Requirement for Limited - Combustible Materials

The insulation material used on the wire pairs in the cable shall conform with the requirement of the NFPA 90A Standard that limited - combustible materials be used in products installed in building plenums. Limited combustible is measured according to NFPA 259 utilizing the maximum limits for potential heat of 3,500 Btu/lb (8.141 mJ/kg) per NFPA 90A. (Note: When a limited combustible cable is preferred, FEP may be specified as the jacketing material. See Section 3.4)

6.0 Transmission

Transmission requirements shall conform to all applicable sections of ANSI / TIA / EIA 568A Category 5 and ISO / IEC 11801 Class D except where exceeded by the requirements of sections 6.1 to 6.6, inclusive.

6.1
Capacitance Unbalance: Pair to Ground

The capacitance unbalance to ground at 1 kHz of any pair, measured in accordance with ASTM D 4566, shall not exceed 200 pF per 100 m (328 ft.) at or corrected to a temperature of 20°C.

6.2

Input Impedance

Finished cable shall have an input impedance of 100 ohms ±15 ohms in the frequency range from 1-100 MHz, and 100 ohms ±22 ohms in the frequency range from 100-200 MHz when measured in accordance with ASTM D 4566-94, 43.2 Method 2, Option 2.

6.3

Attenuation to Cross Talk Ratio (ACR)

ACR shall meet the requirements of Table 6.3.

Table 6.3
Horizontal UTP Cable ACR

Equal to or greater than 10 dB at 155 MHz (90 meter worst pair)
Equal to or greater than 0 dB at 200 MHz (90 meter worst pair)
Equal to or greater than 10 dB at 150 MHz (100 meter power sum)
Equal to or greater than 0 dB at 165 MHz (100 meter power sum)

6.4
Propagation Delay

The propagation delay of any pair at 100 Mhz shall not exceed 5.7 ns/m.

6.5

Propagation Delay Skew

The propagation delay of any pair at 100 Mhz shall not exceed 25 ns at 100 m when measured in accordance with ASTM D 4566 at -20°C to 60°C.

6.6

Longitudinal Conversion Loss

The minimum longitudinal conversion loss shall be 43 dB at 64 kHz when measured in accordance with EN50173.

7.0 Reference Documentation

Copies of referenced standards may be obtained from the following sources:

American National Standards Institute (ANSI)
11 W 42nd St.
13th Floor
New York, NY 10036
Tel. (212) 642-4900
ISO / IEC 11801
Generic Cabling for Customer Premises

American Society for Testing and Materials (ASTM)
100 Barr Harbor Drive
West Conshohocken, PA 19428-2959
ASTM B 3-90
Soft or Annealed Copper Wire
ASTM 4565
Cold Bend Test
ASTM D 4566-94
Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire & Cable
ASTM 4565
Physical and Environmental Properties of Insulation and Jackets for Telecommunications Wire & Cable

Anixter, Inc.
Worldwide Headquarters
4711 Golf Rd.
Skokie, IL 60076
Tel. (847) 677-2600

Purchase Specification No. 0005-09

Insulated Cable Engineers Association
P.O. Box 440
South Yarmouth, MA
ANSI / ICEA S-90-661-1994

Communications Wire and Cable for Wiring Premises
International Standards Organization (ISO)
International Electrotechnical Commission (IEC)
3 Rue de Varambé
P.O. Box 131
1211 Geneva, Switzerland
ISO/IEC 11801
and EN50173

Interconnection of Information Technology Equipment Generic Cabling for Customer Premises
National Fire Protection Association (NFPA)
Batterymarch Park
Quincey, MA 02269
ANSI / NFPA 70-1996
National Electrical Code (NEC)
NFPA 90A


Standard for the Installation of Air Conditioning and Ventilating Systems - 1996 Edition
Telecommunications Industries Association (TIA)
2500 Wilson Blvd., Suite 300
Arlington, VA
Tel. (703) 907-7700
Fax (703) 907-7727
ANSI / TIA / EIA 568A
Commercial Building Telecommunications Cabling Standard

Underwriters Laboratories, Inc.
333 Pfingsten Road
Northbrook, IL 60062
UL 910
Fire Safety Test
UL 444
Standard for Communications Cable

 
  Friday, July 18, 2003
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