CZ2002180A3 - High performance data cable and a UL 910 plenum non-fluorinated jacket high performance data cable - Google Patents

Abstract

This invention deals with high preformance bound lateral shielded twisted pair cables (20, 25, 30) having a high performance data cable (10A & B) containing at least four of the bound lateral shielded twisted pair cables (20, 25, 30), and a method for preparing the same. The bound lateral shielded twisted pair cables (20, 25, 30) preferably have a 20 DEG C. adjusted standard impedance deviation of 4.5 or less and contains at least four of the bound lateral shielded twisted pair cables (10). The twisted pair is laterally wrapped with a metal shield tape (16) and one of a fabric, metal braid, or thread (18) at a tension that provides the above. The tension is such that it provides a cross-sectional void area of less that 25% and preferably less than 18% of the lateral shielded twisted pair cable cross-sectional area. The tape (16) is laterally wrapped with an overlap of at least 10%. Preferably, the cable (20, 25, 30) has a rating out to 600MHz and 1000MHz. We provide a UL 910 plenum at least category 5-high performance data cable (20, 25, 30) that has a non-fluorinated jacket (19) and between the jacket (19) and a cable core, a temperature-resistant flame-retardant separator tape (27).

Description

Technical field

The present invention relates to high-performance data cables which successfully enable transmission at a frequency in the range of 0.3 MHz to 1200 MHz and in particular in the range of 1.0 to 600 MHz and / or 1.0 to 1000 MHz. It also applies to UL 910 high-performance installation cables that have a non-fluorinated sheath. More specifically, the invention relates to a high performance data cable of bundled side shielded twisted pair cables. The invention also specifically relates to installation cables of at least Category 5 of the UL 910 standard having a non-fluorinated sheath and a heat resistant flame retardant tape on the inner circumference of the sheath.

BACKGROUND OF THE INVENTION

The existing high-performance data cables use a thick, rigid 2-inch aluminum tape with 1-inch polyester (mylar) reinforcing layer as shielding. The shield is wrapped around each unshielded twisted pair two-wire subgroup with an application twist length equal to the twist length of the entire cable, typically from 4.0 to 6.0 inches. The tape is about 0.5 inches wide. The wrapping angle is blunt due to the long total twist of the cable (5 inches) and the tape is almost parallel to the longitudinal axis of the twisted pair. A typical cable has 4 twisted pair twisted pair cables with 40% -65% tinned copper braid applied to the four twin strands and a final thermoplastic sheath extruded on the braided twin strands to complete the cable. Blind metal angle of application

-? - ..........

Shielding tapes generally create the problem of opening the tape during cable assembly before it can be caught by a fastener or a spiral applied lead wire.

Also, the tape usually does not copy the outline of the pairs below the tape. This method creates gaps around the unshielded core of the twisted pair, which then does not form a sufficiently stable ground plane to meet the requirements of industrial electrical engineering standards, such as CENELEC prEN 50288-4-1.

The known cable structure mentioned above is mechanically erroneous in the static state and the electrical properties are unstable under installation conditions, because the single-layer braid cannot adequately ensure that the edge of the tape "does not bloom when the cable is bent." This flowering increases NEXT and further disrupts impedance / RL performance once the ground plane is disrupted. This contributes to the unevenness of the attenuation. The impedance numbers are even worse when bending because the distance between the center of the conductors as well as the distance of the conductors from the ground plane varies. The greater the bandwidth requirements, the worse they are met.

There is no known cable design for UL 910 high-performance installation data cable with non-fluorinated sheath. An installation cable using a fluorinated sheath and a heat resistant flame retardant separator tape such as Nomex® (heat resistant flame retardant nylon from DuPont) was used and sold by Belden Wire & Cable Company more than a year before this invention. In these cables, Nomex® tape protects the fluorinated (FEP) sheath against melting and the generation of high smoke peaks in the UL 910 combustion test.

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SUMMARY OF THE INVENTION

Our invention uses, on each twisted pair cable, a lateral wrapping with a shielding tape that is tied by a fabric or metal fastener to achieve such impedance / RL, uniformity of attenuation, and capacitance imbalance as required.

Our invention eliminates most of the trapped air that is commonly found in shielded twisted pair cables. This is accomplished by laterally wrapping the shield with an overlap, preferably 10%, having from 0.33 to 2.0 mils and preferably about 1 mils of thick metal layer. The laterally wrapped shield is held together by a suitable fastener and preferably by a textile or metal braid or a textile spiral wound fiber to obtain a good shield together with improved impedance control. If desired, a bridging fold can be formed along the side seam of the shield to improve EMI / Rfi insulation. A continuous ground plane formed over the entire length of the cables allows for better capacitance unbalance as well as improved attenuation uniformity by reducing RL reflection reduction and capacitance unbalance.

Our invention also provides considerable geometric bending stability. The use of a tight side shield with at least 10% interference and a textile or metal fastener eliminates tape gaps and bloom during bending. This establishes a very stable level of physical and electrical performance under adverse conditions of use. The distances between the centers of the conductors of the twisted-pair cable according to the invention, indicated as d in FIG. 3, and the distances of the conductors from the ground, remain much more stable than the prior art cables.

• · · · · · · · · · · · · · ·

The cables according to the invention are particularly useful for use as cables of category 7 and higher. This is particularly true for the side shielded and coupled cables of the invention which are used at 600 MHz or 1000 MHz. A typical high-performance data cable made in accordance with our invention has four twisted pair cables, each twisted pair cable being made of two foamed or non-foamed (fluorocopolymer or polyolefin) individual conductors. Each of the twisted-pair cables has a unique tight side metal shielding tape wrapped around it, the tape with its side bypass folding being tightly held in place by a tight connection means such as a metal braid or a spiral fiber. If a braid is used as the fastener, it is 40% to 95% braid. If a fiber is used, it is preferably helically wound. The sloped side shielded pairs are connected to each other to S-Z or planetary to a bundled or collapsed configuration. The twisted pair can be bound by a total of 40% to 95% braid or fiber. The final thermoplastic sheath (fluorocopolymer or polyolefin or polyvinyl chloride) is extruded around bundled twisted pair cables.

Typically, the metal shield is an aluminum tape or a composite tape such as a BELDFOIL bridging tape (i.e., a shield where the metal foil or coating is applied on one side of the supporting plastic film), or a DUOFOIL tape (i.e. a shield where the metal foil or a coating applied on both sides of the supporting plastic film), or a BELDFOIL tape with a free edge. The total metal thickness is from 0.33 to 2.0 mils of aluminum layer thickness, and preferably about 1.0 mils. Although aluminum is mentioned herein, any suitable metal normally used for such metal and metal can be used

- 5 composite tapes such as copper, copper alloy, silver, nickel, etc. Each twisted pair is coated with metal on the outside, and although the most preferred wrapping is with a 25% overlap, the overlap may in practice be 10 to 50%. A preferred shielding that provides the best attenuation and impedance characteristics are those tapes that are joined to achieve a bypass. However, with a suitable overlap, the bridge folding can be omitted.

The number of shielded twisted pair cables in a high-performance data cable is typically from 4 to 8, but may be higher if required. The voltage of the side shielding and fastener is such that the shielding and fastener eliminates most of the trapped air to provide a standard impedance deviation for the bundled side shielded twisted pair cable and an average standard impedance deviation for a high-performance data cable containing a plurality of side shielded twisted pair cables. . The tension on the shielding tape and the fastener is such that there is 25% or less, and preferably 18% or less, of free space over the entire cross-sectional area of the side shielded twisted pair taken at any point over the entire length of the cable.

The invention provides a high-performance twisted pair data cable having a shield laterally wrapped around an unshielded twisted pair cable and a fabric or metal braid or fiber simultaneously or sequentially wrapped around the side shield to secure the shield. The winding of the shielding and the fastener (braid or fiber) is carried out at a voltage such that for a single twisted pair on which it is used separately, the single twisted pair has an unbalanced impedance with a nominal or standard impedance deviation for the side shielded twisted pair cable up to 600 MHz with • · · ♦

-6 impedance standard deviation of 3.5 or less for 1.0 to 600 MHz, with no single impedance deviation not exceeding 6.0, and for a cable that Rated for up to 1000 MHz, with a standard impedance deviation of 4.5 or less for 1.0 to 1000 MHz, with no single impedance deviation not exceeding 6.0. A high-performance data cable that contains a number of bundled side shielded twisted pair cables and is rated up to 600 MHz has an average standard impedance deviation for all of the bundled side shielded twisted pair cables is 3.5 or less for 1.0 to 600 MHz, with no single impedance deviation exceeding 6.0. A high-performance data cable that contains a number of bundled side shielded twisted pair cables and is rated up to 1000 MHz, has an average standard impedance deviation for all of the bundled side shielded twisted pair cables, 4.5 or less for 1.0 to 1000 MHz, with no single impedance deviation exceeding 6.0. The standard impedance deviation is calculated relative to the mean or average impedance of 50 to 200 ohms from at least 350 frequency measurements over a 328-foot or longer cable.

The invention also provides a high performance data cable that can be classified as a high performance UL 910 installation cable. The cable preferably has a non-fluorinated sheath and a heat resistant flame retardant separator tape along and in contact with the sheath.

Other advantages of the invention will become more apparent upon reading the following preferred description taken in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Giant. 1 is a perspective view of a twisted pair cable used in the present invention.

• 4

-7 * · 4 «4 · 4 · 4 *

4 4

Giant. 2 is a perspective view of a side twisted pair cable according to the present shielded invention.

Giant. 3 is an enlarged section along lines 3-3 of FIG. 2.

Giant. 4A is an enlarged cross-sectional view of a braided side shielded twisted pair cable according to the present invention.

FIG

Fig. 4A.

FIG.

Giant. 6 is a perspective view of the cable of FIG. 5.

Giant. 7 is a perspective view of a cable comprising the four cables of FIG. 4B.

Giant. 8 is a perspective view of one UL 910 standard high performance data cable.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows a twisted pair cable 10 having a pair of wires 12 and 13, which are preferably solid copper wires, but may be any wires suitable for high performance data cables. Each of the conductors 12 and 13 is coated with a suitable insulation 14 and 15, which may be a foamed or non-foamed fluorocopolymer or a suitable polyolefin.

Figure 2 shows the twisted pair of Figure 1 sealed with a metal shield 16. The metal shield may be any suitable shield such as a metal tape, or a non-metallic composite tape such as a polyester (e.g. mylar) having one or more both sides fc fc

-8 * · fcfcfc ·

Non-metallic base metal normally used for cable shielding. The metal for the tape and composite tape is aluminum, copper, copper alloy, nickel, silver, etc. The thickness of the sheath metal is from 0.33 to 2.0 mils and preferably 1.0 mils. Shielding is a metal shielding, such as a BELDFOIL bridging tape or DUOFOIL type tape, which is a tape that has metal on both sides of the tape.

The tape 16 is laterally wrapped with sufficient pressure, as shown in FIG. 3, so as not to damage the insulation 14 and 15, but to provide a small void space 17 that accounts for less than 25% of the cross-sectional area shown in FIG. preferably, the void constitutes less than 18% of the cross-sectional area shown in FIG. 3. The sealed tape 16 corresponds to the outer shape of the twisted pair 10 to obtain a side shielded twisted pair cable 10A. The tape 16 is wrapped with a small overlap and optionally with a bridging fold. As mentioned above, the preferred thickness of aluminum or metal is 1 mil. The tape width is sufficient to secure a minimum of 10%.

As shown in Figs. 4A and 4B, the shielded twisted pair cable 10A (Fig. 3) is tightly held together by means of connection means 18 or 18 'to obtain bundled shielded cable 10B and 10C. The tension of the tape and fastener package is sufficient to form an unshielded twisted pair 10 to obtain a substantially oval cross-sectional configuration, but not so tight as to deform the insulation 14 and 15. The lateral wrapping and connection is performed at such a tension that substantially eliminates most of the air inside the bound shielded twisted pair 10B and 10C. This provides, at any point in the length of the cable, a tight oval cross section with voids 17. This tight wrap provides the standard impedance deviation shown above.

· A a a a a

Preferably, the insulation is a foamed fluorocopolymer having a thickness of from " to " and " 4 "

0.010 to 0.060 inches and preferably 0.015 to 0.020 inches. Single wires 12 a 13 are usually 20 to 30 AWG a preferably 22 to 24 AWG. The wires may be whole or stranded, p advantage whole. Length of twist can for all of four twisted

The twisted-pair cables 10 may be the same or different and right-handed or left-handed. The twist is preferably 0.3-2.0 inches. The total cable twist is typically 10 to 20 times the average cable core diameter.

The braid 18 is a fabric (e.g., aramid) or a metal braid, preferably 40% -95% braid. The metal braid is preferably a 45% -65% tinned copper braid, but can be any type of metal braid suitable for Category 7 high-performance data cables, eg copper, copper alloy, bronze (copper alloy mixed with a metal other than nickel or zinc), silver, etc.

The fastener 18 'is a fabric fiber (aramid) that is spirally wound to provide 40% -95% bonding. Preferred is a denier 760 aramid fiber having a 1/4 inch spiral twist.

Referring to FIG. 5, the bundled shielded cable 10B or 10C has an extruded sheath 19 to form a high performance data cable 20 of the invention. The sheath may be of any suitable sheath material that is suitable for Category 7 cable - a thermoplastic polyolefin such as flame retardant polyethylene, polyvinyl chloride, etc.

Giant. 6 shows a cable 20 comprising four braided shielded twisted pair cables 10B. There may optionally be a ground wire 21 between the cables 10B. The ground wire may, of course, be located at any suitable location, such as a ground wire.

For example, immediately below the sheath and / or may be used for a bundle of four braided shielded cables 10B.

Giant. 7 illustrates a cable 25 comprising four fiber-bound shielded twisted pair cables. The four fiber-twisted shielded twisted pair cables 10C are further tied or wrapped with a metal or fabric braid 22. The braid 22 is generally of the same type as described above for the braid 18. Optionally, a ground wire 21 may be provided between the cables 10C. it may be at any suitable location, such as immediately below the sheath, and / or may be used to connect four braided shielded cables 10C.

Giant. 8 illustrates a cable 30 having a sheath 26 spirally or laterally wrapped with a separator tape 27 below the sheath. The separator tape 27 surrounds the four twisted twisted-pair braided shielded cables 10C and their connecting braid 22. The sheath 26 is a non-fluorinated sheath such as polyvinyl chloride. The separator tape 27 is a heat resistant, flame retardant separator tape such as Nomex®. The construction of this cable is similar to that of FIG. 7 except that the cable has a separator strip 27 and does not have a fluorinated sheath. If desired, a plurality of these non-metallic layers that braid or twist shielded twisted-pair cables may be tied or wrapped with a ground wire 21. Separated tape is placed on the twisted twisted-pair cables and extruded to form a sheath 26

As shown in the following examples 1-7, a high performance braided side shielded twisted pair cable has an unbalanced impedance having a standard impedance deviation for cables rated up to 600 MHz 3.5 or less for at least 350 measurements from 1.0 to 600 MHz , and for cables • · • · • ·

- 11 dimensioned up to 1000 MHz, 4.5 or less for at least 350 measurements from 1.0 to 1000 MHz. A high performance data cable that includes a plurality of braided shielded twisted pair cables has an average standard impedance deviation for all of the plurality of braided shielded twisted pair cables 3.5 or less for 1.0 to 600 MHz and 4.5 or less for 1.0 to 600 MHz. 1000 MHz, with no single impedance deviation exceeding 6.0. All examples were tested by the CENELEC impedance test, and were performed over 328 feet of a tightly shielded twisted pair cable, the shielding was laterally wrapped to obtain a 10A twisted pair cable. The side shield was a BELDFOIL tape having an aluminum thickness of 1 mil. The tape was laterally wrapped with little overlap. The side tape was attached with a metal braid. The measurement was started at 0.3 MHz and at least 150 values were measured from about 1 to 600 MHz for Examples 1 and 8, and from about 1.0 to 1000 MHz for Examples 2 to 7. Cable wires 12 and 13 were 22 AWG of solid copper and insulation 14 and 15 were from FEP. The measurements were carried out at various temperatures and adjusted to 20 ° C. All of the cables had less than 18% void space 17 and the tests were conducted around a mean impedance of 100 ohms.

Example 1

328 feet of the length of the braided shielded twisted pair 10B cable was tested at 23.3 ° C. The cable impedance was measured from 0.3 to 600 MHz and at least 350 measurements were made between 1.0 and 600 MHz. The braided shielded twisted pair cable was tested and had a standard impedance deviation of 1.7714 around a mean impedance of 95.2619.

• · · · · · · ·

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Example 2

328 feet of the length of said braided shielded twisted pair cable 103 was tested at 23.3 ° C. Cable impedance was measured from 0.3 to 1000 MHz and at least 350 measurements were made between 1.0 and 1000 MHz. The braided shielded twisted pair cable was tested and had a standard impedance deviation of 2.8565 around the mean impedance of 94.3178.

Example 3

328 feet of said high performance data cable 20 having four braided shielded twisted pair cables 10B was tested at 23.9 ° C. The impedance for each of the four braided shielded twisted pair cables was measured from 0.3 to 1000 MHz. At least 350 measurements were performed between 1.0 and 1000 MHz. The following data was adjusted to 20 ° C.

The first braided shielded twisted pair cable had a standard impedance deviation of 4.2744 relative to a mean impedance of 100.5321.

The second braided shielded twisted pair cable had a standard impedance deviation of 5.1630 relative to a mean impedance of 101.4416.

The third braided shielded twisted pair cable had a standard impedance deviation of 4.0469 relative to a mean impedance of 101.4583.

The fourth braided shielded twisted pair cable had a standard impedance deviation of 4.3360 relative to a mean impedance of 100.7506.

-13 " · · · · ·

The high-performance cable 20 of this example had an average standard impedance deviation of 4.4551 ((4.2744 + 5.1630 + 4.0469 + 4.3360) / 4).

Example. 3

The 328 feet length of said high performance data cable 20 having four braided shielded twisted pair cables 10B was tested at 23.9 ° C. The impedance for each of the four braided shielded twisted pair cables was measured from 0.3 to 1000 MHz. At least 350 measurements were performed between 1.0 and 1000 MHz. The following data was adjusted to 20 ° C.

The first braided shielded twisted pair cable had a standard impedance deviation of 4.0430 relative to a mean impedance of 101.1783.

The second braided shielded twisted pair cable had a standard impedance deviation of 4.0027 relative to the mean impedance of 101.3086.

The third braided shielded twisted pair cable had a standard impedance deviation of 3.6038 relative to a mean impedance of 101.7716.

The fourth braided shielded twisted pair cable had a standard impedance deviation of 4.0092 relative to a mean impedance of 101.3598.

The high-performance cable 20 of this example had an average standard impedance deviation of 3.9147 ((4.0430 + 4.0027 + 3.6038 + 4.0092) / 4).

«· · · · · · ·

- 14 • · · · · · · · · · · · · · · · ·

Example 5

The 328 foot length of said high performance data cable 20 having four braided shielded twisted pair cables 10B was tested at 23.9 ^c C. The impedance for each of the four braided shielded twisted pair cables was measured from 0.3 to 1000 MHz. At least 350 measurements were performed between 1.0 and 1000 MHz. The following data was adjusted to 20 ° C.

The first braided shielded twisted pair cable had a standard impedance deviation of 3.2469 relative to a mean impedance of 199.2035.

The second braided shielded twisted pair cable had a standard impedance deviation of 4.2070 relative to a mean impedance of 100.9596.

The third braided shielded twisted pair cable had a standard impedance deviation of 3.4690 relative to a mean impedance of 102.8214.

The fourth braided shielded twisted pair cable had a standard impedance deviation of 3.8990 relative to a mean impedance of 101.2338.

The high performance cable 20 of this example had an average standard impedance deviation of 3.7055 ((3.2469 + 4.2070 + 3.4690 + 3.8990) / 4).

Example 6

The 328 feet length of said high performance data cable 20 having four braided shielded twisted pair cables 10B was tested at 24.2 ° C. The impedance for each of the four braided shielded twisted pair cables was measured from 0.3 to 1000 MHz. Was »· ······································································

At least 350 measurements are performed between 1.0 and 1000 MHz. The following data was adjusted to 20 ° C.

The first braided shielded twisted pair cable had a standard impedance deviation of 4.0488 relative to a mean impedance of 101.4423.

The second braided shielded twisted pair cable had a standard impedance deviation of 4.2081 relative to a mean impedance of 100.9498.

The third braided shielded twisted pair cable had a standard impedance deviation of 4.5567 relative to the mean impedance of 102.0121.

The fourth braided shielded twisted pair cable had a standard impedance deviation of 3.6408 relative to a mean impedance of 103.9531.

The high-performance cable 20 of this example had an average standard impedance deviation of 4.1136 ((4.0488 + 4.2081 + 4.5567 + 3.6408) / 4).

Example 7

The 328 feet length of said high performance data cable 20 having four braided shielded twisted pair cables 10B was tested at 24.2 ° C. The impedance for each of the four braided shielded twisted pair cables was measured from 0.3 to 1000 MHz. At least 350 measurements were performed between 1.0 and 1000 MHz. The following data was adjusted to 20 ° C.

The first braided shielded twisted pair cable had a standard impedance deviation of 3.6939 relative to a mean impedance of 102.0776.

- 16The second braided shielded twisted pair cable had a standard impedance deviation of 3.8658 relative to a mean impedance of 100.4614.

The third braided shielded twisted pair cable had a standard impedance deviation of 3.5208 relative to a mean impedance of 99.7808.

The fourth braided shielded twisted pair cable had a standard impedance deviation of 3.9835 relative to a mean impedance of 100.0594.

The high performance cable 20 of this example had an average standard impedance deviation of 3.7660 ((3.6939 + 3.8658 + 3.5208 + 3.9835) / 4).

Example 8

The 328 feet length of said high performance data cable 20 having four braided shielded twisted pair cables 10B was tested at 24.4 ° C. The impedance for each of the four braided shielded twisted pair cables was measured from 0.3 to 600 MHz. At least 350 measurements were performed between 1.0 and 600 MHz. The following data was adjusted to 20 ° C.

The first braided shielded twisted pair cable had a standard impedance deviation of 3.5621 relative to a mean impedance of 102.2971.

The second braided shielded twisted pair cable had a standard impedance deviation of 3.9185 relative to the mean impedance of 103.9484.

The third braided shielded twisted pair cable had a standard impedance deviation of 2.6943 relative to a mean impedance of 103.2519.

The fourth braided shielded twisted pair cable had a standard impedance deviation of 2.5206 relative to the mean impedance of 102.9625.

The high-performance cable 20 of this example had an average standard impedance deviation of 3.1739 ((3.5621 + 3.9185 + 2.6943 + 2.5206) / 4).

Example 9

The two cables of Fig. 8 were tested according to UL 910. Each cable contained four twisted two-wire bundled shielded cables 10C. The shield 16 of each cable was formed as a tape of 2 mils of aluminum and 0.5 mils of polyester having a width of 0.625 inches. Each shield 16 was fastened with an aramid 760 fiber. Four fiber-bound shielded cables were wrapped with 40% tinned copper braid. Four braided cables were wrapped with a 2,000-inch Nomex separator tape having a width of 1,250 inches. A polyvinyl chloride sheath was extruded onto the separator tape. Both cables passed the UL 910 installation cable test. In the UL 910 test, the first cable passed a 1.5 foot flame, a 0.32 maximum, and a 0.09 P / F diameter. The second cable led a flame of 1.5 feet, 0.29 maximum and 0.09 diameter P / F. Both cables complied as category 7 for sizing up to 1000 MHz.

Although the high performance installation data cable of at least category 5 according to the UL 910 standard of the invention has been subjected to UL 910 on the cable of Figure 8, which is a category 7 cable, it is clear that the invention is not limited to this specific cable design Category 5 or higher, using a non-fluorinated sheath such as a polyvinyl chloride sheath and having a temperature-resistant flame retardant separator tape between the sheath and the core of the cable. For example, it provides high performance installation data.

- 18 UL 910 standard cable rated up to 600 MHz, having the construction described in our parallel application, consisting of tightly wrapped spirally shielded twisted pair cables, for this cable is a non-fluorinated sheath, for example a polyvinyl chloride sheath, and a temperature-resistant flame retardant separator tape between the sheath and the core of the cable. The high performance UL 910 at least category 5 installation data cable is not limited to the cables listed above, but includes at least UL 910 at least category 5 high performance installation data cable having a non-fluorinated sheath and a temperature resistant flame retardant separator tape between sheath and cable core.

It is to be understood, of course, that the embodiments just described have been chosen to illustrate and the invention is not limited to the embodiments described herein. Numerous changes and modifications can be made by those skilled in the art without departing from the scope and spirit of the invention as defined in the appended claims.

Claims (19)

PATENT CLAIMS A bundled side shielded twisted pair data cable, comprising an insulated twisted pair cable, a shielding tape selected from the group consisting of metal tape, a first composite tape having a non-metallic base and a metal layer on one side of said base, and a second composite tape having a non-metallic base and layer metal on both sides of said base; wherein said shielding tape is wrapped around said twisted pair cable at least 10% overlap; a fabric or metal fastener is wrapped around said shielding tape to obtain a tied side shielded twisted pair cable; said shielding tape has a metal thickness of from 0.33 to 2.00 mils; said shielding tape and coupling means are wrapped around said twisted pair cable with a voltage that displaces a substantial amount of air and leaves an empty space of less than 25% of the free area in the cross-section of the shielded twisted pair cable to obtain said bundled twisted pair cable; and said bundled side-side shielded twisted shielded twisted data cable has a standard impedance deviation at 20 ° C of 4.5 or less, the standard deviation being calculated relative to a mean or average impedance of 50 to 200 ohms. The cable of claim 1, wherein said cable has a rated power rated to 1000 MHz; and said standard impedance deviation is measured on a 328-foot or longer cable with at least 350 frequency measurements in the range of 1.0 to 1000 MHz, and calculated relative to the mean or an average impedance of 90 to 110 ohms. The cable of claim 1, wherein said cable has a rated power rated to 600 MHz; and said standard impedance deviation is measured on a 328 feet long or longer cable with at least 350 frequency measurements in the range of 1.0 to 600 MHz, wherein said standard impedance deviation is 3.5 or less is calculated relative to a mean or average impedance of 90 up to 110 ohms. 4. Cable according to Claim 2 characterized se that said empty cross section is smaller than 18%; and listed shielding tape has a metal thickness from 0.75 do 1,25 thousandths inches. 5. Cable according to Claim 3 characterized se that said empty cross section is smaller than 18%; and listed shielding tape has a metal thickness from 0, 75 do 1,25 thousandths inches. The cable of claim 1, further comprising at least four bundled side shielded twisted pair cables, the sheath surrounding said at least four bundled side shielded twisted pair cables to obtain a high performance data cable; wherein said high performance data cable has a standard impedance deviation at 20 ° C of 4.5 or less, measured over a length of 328 feet or more; said standard impedance deviation being the average of the standard impedance deviations measured on each of the at least four bundled side shielded twisted pair cables. -21 · where the impedance standard deviation is measured on each of at least four bundled side-shielded twisted-pair wires cables with at least 350 frequency measurements and calculated with a mean or average impedance of 50 to 200 ohms. Cable according to claim 6, characterized in that the high-performance cable is dimensioned at least up to 600 MHz, each of the at least four bundled side-shielded twisted pair cables has a cross-sectional area of less than 18% in cross section, said high-performance data cable having a standard impedance deviation at 20 ° C of 3.5 or less measured at 328 feet long or longer a high-performance data cable, the standard impedance deviation being measured on each of the four bundled shielded twisted pair cables with at least 350 frequency measurements from 1.0 to 600 MHz and calculated relative to a mean or average impedance of 90 to 110 ohms, with no single the standard deviation of the impedance from said mean or average impedance is not more than 6. Cable according to claim 6, characterized in that the high-performance cable is dimensioned at least up to 1000 MHz, each of said at least four bundled side shielded twisted pair cables has a cross-sectional area of less than 18% in cross-section, said high-performance data cable having a standard impedance deviation at 20 ° C of 4.5 or less measured at 328 feet long or longer a high-performance data cable, this standard impedance deviation being measured on each of the at least four bundled shielded cables. -22 · Twisted-pair twisted-pair cable with at least 350 frequency measurements from 1.0 to 600 MHz; and calculated with respect to the mean or average impedance of 90 to 110 ohms, with no single standard impedance deviation from that mean or average impedance exceeding 6. The cable of claim 6, wherein the temperature resistant flame retardant separator tape surrounds the at least four bundled side shielded twisted pair cables and is between said sheath and the core of the cable, and said sheath is a non-fluorinated polyolefin. Cable according to claim 6, characterized in that the high-performance cable is dimensioned at least up to 600 MHz, each of the at least four bundled side-shielded twisted pair cables has a cross-sectional area of less than 18% in cross section, said high-performance data cable having a standard impedance deviation at 20 ° C of 3.5 or less measured at 328 feet long or longer a high-performance data cable, the standard impedance deviation being measured on each of said at least four bundled shielded twisted pair cables with at least 350 frequency measurements from 1.0 to 600 MHz and calculated with respect to an average or average impedance of 90 to 110 ohms, an individual standard impedance deviation from said mean or average impedance of not more than 6, a temperature resistant flame retardant separator tape surrounds said at least four tied side shielded twisted pair cable and is between said sheath and cable core, and said sheath It is a non-fluorinated polyolefin. • · »· -23 Cable according to claim 6, characterized in that the high-performance cable is dimensioned at least up to 1000 MHz, each of said at least four bundled side shielded twisted pair cables has a cross-sectional area of less than 18% in cross-section, said high-performance data cable having a standard impedance deviation at 20 ° C of 4.5 or less measured at 328 feet long or longer a high-performance data cable, the standard impedance deviation being measured on each of the four bundled shielded twisted pair cables with at least 350 frequency measurements from 1.0 to 1000 MHz and calculated relative to the mean or average impedance of 90 to 110 ohms, with no single a standard impedance deviation from said mean or average impedance of not more than 6, a temperature resistant flame retardant separator tape surrounds said at least four tied side shielded twisted pair cable and is between said sheath and the core of the cable, and said sheath is not fluorinated polyolefin. A high-performance UL 910 standard installation cable having at least four twisted-pair cables comprising a cable core comprising said at least four twisted-pair cables, a temperature resistant flame retardant separator tape surrounding said at least four bundled side shielded twisted twisted-pair cables between the sheath and the core. the sheath is a non-fluorinated polyolefin. Cable according to claim 12, characterized in that the cable is dimensioned up to at least 600 MHz, Said high-performance data cable has a standard impedance deviation at 20 ° C of 3.5 or less, measured at 328 feet long; or a longer high-performance data cable, the standard impedance deviation being measured on each of said at least four bundled shielded twisted pair cables with at least 350 frequency measurements from 1.0 to 600 MHz and calculated relative to a mean or average impedance of 90 to 110 ohms, no single standard impedance deviation from said mean or average impedance is greater than 6. The cable of claim 12, wherein the cable is sized to at least 1000 MHz, said high performance data cable having a standard impedance deviation at 20 ° C of 4.5 or less, measured at 328 feet long or longer of high performance data. This impedance standard deviation is measured on each of the four bundled shielded twisted pair cables with at least 350 frequency measurements from 1.0 to 1000 MHz and calculated with respect to the mean or average impedance of 90 to 110 ohms, with no single standard impedance deviation from said mean or average impedance not more than 6. A method of manufacturing a bundled side-shielded twisted pair data cable, comprising preparing a twisted pair cable having an insulation selected from the group consisting of a non-foamed fluoropolymer and a polyolefin; laterally wrapping said twisted pair cable with a metal shielding tape to obtain a side shielded twisted pair cable with at least 10% overlap of said shielding tape, said shielding tape having a metal thickness of 0.33 to 2.00 mils, and said -25 »· ····································· The shielding tape is selected from the group consisting of a metal tape, a first composite tape having a non-metallic base and a metal layer on one side of said base, and the other. composite tapes having a non-metallic base and a metal layer on both sides of said base; wrapping said laterally twisted pair cable with a fabric shielded or metal twisted tied laterally by means of a shielding means for obtaining a twisted pair cable; and wrapping the side shielding and the fastener at a voltage that provides said bundled side shielded twisted pair cable with a standard impedance deviation at 20 ° C of 4.5 or less, measured at 328 feet long or longer with at least 350 frequency measurements, wherein the standard deviation is calculated relative to a mean or average impedance of 50 to 200 ohms. 16. The method of claim 15, wherein said shielding tape has a metal thickness of from 0.75 to 1.25 mils, wrapping and splicing the twisted pair cables is such that said free cross-sectional area is less than 18%. and said cable has a power of up to 600 MHz, wherein at least 350 frequency measurements are taken in the range of 1.0 to 600 MHz, and said standard impedance deviation is 3.5 or less and is calculated relative to a mean or average impedance of 90 to 110 ohms, with no single deviation greater than 6 ohms. A method as claimed in claim 15, wherein the tape has a metal thickness of from 0.75 to 1.25. - the packaging and splicing of twisted pair cables is such that said free cross-sectional area is less than 18% and said cable has a power of up to 1000 MHz, said at least 350 frequency measurements being taken in the range of 1.0 to 1000 MHz, and said standard impedance deviation being 4.5 or less and calculated with respect to a mean or average impedance of 90 to 110 ohms, with no single deviation greater than 6. The method of claim 15, further comprising bundling at least four of said side shielded twisted pair cables; and extruding the sheath around the at least four bundled side shielded twisted pair cables to obtain a high performance data cable; and selecting said at least four bundled side shielded twisted pair cables to form said high performance data cable that is dimensioned to at least 600 MHz and has a standard impedance deviation of 3.5 or less, measured at 328 feet long or longer high performance data cable, said standard impedance deviation is measured on each of said at least four bundled side shielded twisted pair cables with at least 350 frequency measurements and calculated around a mean or average impedance of 90 to 110 ohms, and said average standard impedance deviation is the average of said standard impedance deviation measured at all of said at least four bundled side shielded twisted pair cables. The method of claim 15, further comprising bundling at least four of said side shielded twisted pair cables; and · «• *« » -27 · a * vyt ování ování vyt vyt ování vyt vyt vyt ování ování ování ování ování ování ování ování ování ování ování ování ování ování ování ování vyt ování ování vyt vyt vyt vyt ování vyt vyt vyt vyt vyt vyt vyt vyt vyt vyt data cable; and selecting said at least four bundled side shielded twisted pair cables to form said high performance data cable that is dimensioned to at least 1000 MHz and has a standard impedance deviation of 4.5 or less, measured at 328 feet long or longer high performance data cable, said impedance standard deviation is measured on each of said at least four bundled side shielded twisted pair cables with at least 350 frequency measurements and calculated around a mean or average impedance of 50 to 110 ohms, and said average impedance standard deviation is the average of said standard impedance deviation measured over all of said at least four bundled side shielded twisted pair cables. The method of claim 18 further comprising, prior to extrusion of the sheath, wrapping a temperature resistant flame retardant separator tape around the at least four bundled side shielded twisted pair cables so that the heat resistant flame retardant separator tape is between said sheath and the core of the cable, and said sheath is a non-fluorinated polyolefin. The method of claim 19 further comprising, prior to extrusion of the sheath, wrapping a heat resistant flame retardant tape around said at least four bundled side shielded twisted pair cables such that a heat resistant flame retardant separator tape surrounds between said sheath and cable core, and said sheath is non-fluorinated polyolefin .