RU21977U1 - LOCAL CABLES HIGH FREQUENCY BRANDS KVPPEPZ, KVPPEPZBBSHP, KVPVEP - Google Patents

Description

1.2 The area of technology to which the utility model belongs.

High-frequency local communication cables with polyethylene insulation lived in a polyethylene sheath with hydrophobic filling, designed to transmit analog signals in the frequency range 12–552 kHz and transmit digital signals at speeds up to 2.048 Mbit / s GFI rated remote voltage up to 225 V AC or voltage up to 315 V DC. Primary area of application:

BSVPEPepZ brand - for laying in telephone sewers, in collectors, mines, along the walls of buildings and suspensions on overhead communication lines for organizing a subscriber access network;

Brand KVPEPpZBbShShp- for laying in the soil of all categories, except rocky, zones infected with rodents, in subscriber access networks.

KVPVep-brand for laying on the inner walls of buildings and vnuf premises of a subscriber access network.

1.3 prior art.

Information about analogues taken from the reference book "Electric wires and cords, authors N.I. Belorussov, A.E. Sahakyan, A.I. Yakovleva, publishing house "Energy, g. Moscow, 1979, also used information from the official publication “Telephone Cables with Polyethylene Insulation in a Plastic Sheath. Technical conditions, IPK Publishing House of Standards, Moscow, 1999.

The closest analogous cable for high-frequency local communication cable telephone brands TPPepZ, TPPepZBbShp and TGGVep.

Telephone cables with polyethylene insulation in a plastic sheath are designed for operation in local primary communication networks with a nominal voltage of remote filament up to 225 and 145 V AC with a frequency of 50 Hz or voltage up to 315 and 200 V DC, respectively. Primary area of application:

TPVep-brand cable for laying on the inner walls of buildings and indoors;

ТТШэпЗ brand - for installation in telephone sewers, in collectors, mines, along the walls of buildings and pendant on overhead communication lines in conditions of high humidity;

Telephone cable construction elements: current-conducting conductors, core insulation, hydrophobic filling, belt insulation, screen, sheath, plastic tapes, protective covers.

Signs of an analogue that coincide with the essential signs of the cable: t copper single-wire cores, a number from 1 to 5;

nominal diameter of conductive wires 0.50; 0.64 mm;

nominal number of pairs from 10 to 100;

polyethylene insulation in the form of a concentric layer;

Ф two isolated conductors are twisted into a pair, pairs are twisted into elementary, bundles into cores;

in cables of TPPepZ and TPPepZBbShShp brands, the free space is filled with a hydrophobic filler;

the core of the filled cable is waterproof;

Ф belt insulation is applied over twisted and twisted filled core;

over the belt insulation, a screen made of aluminum-polymer tape is applied;

superimposed shell, tape armor, protective hose;

F cable is laid with a bend radius; for unarmored cables of at least 10 D in a plastic sheath, armored - at least 12 diameters in armor with a plastic sheath, where D is the outer diameter;

on the cable sheath with an interval of not more than 1 m, the cable brand, manufacturer's code, year of manufacture and measuring marks should be applied.

Service life 25 years, warranty service life 3 years

The thickness of the insulation of the current supply) of the conductors of telephone cables is 0.250.30 - 0.35 mm, the strands are twisted in pairs by unidirectional twisting with a span of not more than 100 mm, which does not allow a large number of different signals to be transmitted through these cables, to reduce the level of mutual interference and energy loss . The frequency of signal transmission is 50 Hz. Higher frequencies are limited by a sharp increase in attenuation.

The use of communication cables in a wide range of frequencies imposes special requirements on their design and source materials. The choice of the type and design of the communication cable is determined not so much by the process of energy distribution along the line as by the need to protect the high-frequency circuits located under a common sheath from mutual interfering influences.

1.4. Utility Model Essence

A high-frequency local communication cable is designed to transmit analog signals in a wide frequency range - 12–552 kHz.

Requirements for high-frequency local communication cable: tel

I.S. List of figures of drawings and other materials.

The drawings show:

figure 1. - cable KVPEPPZBBSHP 100x2xO, 46mm; fshura 2. - cable KVPPepZ 10x2xO, 5mm; figure 3.- cable KVPVep 50x2xO, 5mm.

1.6 Information confirming the possibility of implementing a utility model.

Description of utility model construction:

copper single-wire current-conducting conductors. (fig.1D pos. 1). The nominal diameter of the core is 0.5 and 0.64 mm. Serve to direct the flow of electrical energy.

The development of a high-frequency cable makes it possible to connect a larger number of subscribers by expanding the range of transmitted frequencies, and improving the electrical characteristics This technical result is achieved using the following essential features: a change in the cable design of the thickness of the insulating layer of the conductive conductors, which is compared with the insulation of the analogue. using unidirectional twisting methods for twisting insulated cores with coordinated steps of each pair within 20-60 mm. The difference between a high-frequency local communication cable and an analog cable is that in telephone cables it is possible to transmit signals with a frequency of 50 Hz, and in the high-frequency range of transmitted frequencies significantly wider - 12- 552 kHz. the nominal insulation thickness of conductors in telephone cables is: for conductors with a diameter of 0.5 mm - 0.25-0.30 mm; for cores with a diameter of 0.64 mm - 0.30-0.35 mm. In high-frequency local communication cables, the nominal insulation thickness is: for conductors with a diameter of 0.5 mm - 0.35 mm; for conductors with a diameter of 0.64 mm - 0.40 mm, two insulated cable conductors are twisted in pairs: in telephone cables with unidirectional twisting in increments of no more than 100 mm, in high-frequency cables with unidirectional twisting with coordinated steps within 20-60 mm

Two insulated conductors (a and b), sharply different in color, are hidden in pairs with unidirectional twisting with coordinated steps within 20-60 mm.

Pairs are twisted into elementary bundles (, 3 pos. З) (five or ten-pair), unidirectional twisting. Twisting steps no more than 600 mm. Pairs in an elementary ten-pair bundle and a ten-pair core have a color in accordance with that specified in the table. 1-1. Pairs in an elementary five-part bundle are colored in the first or second five pairs of a ten-pair elementary bunch.

On an elementary P5 ™ yuk, a fastening winding of synthetic cotton threads is applied in an open spiral.

Elementary beams are twisted into the core (Fig. 1 D pos. 7) with unidirectional twisting, with a pitch of not more than 75 diameters along the twisting of the core. The twisting system corresponds to the data in table. 1-2. Elementary beams are colored in accordance with table. 1-3

A fastening winding of synthetic or cotton threads or synthetic tapes is applied to the cable core.

In cables of the KVPPepZ and KVPPepZBbShp brands, the free space of the core throughout the entire construction length is filled with a hydrophobic filler (figLD P03.8). The core of the filled cable is waterproof.

On top of the twisted and twisted core filled with a hydrophobic mass, polyamide (or polyethylene, or polyethylene terephthalate) tapes are overlapped (Fig. 1E, 3, item 4). as a waist insulation.

A layer of hydrophobic aggregate (fig. LD, pos. 8) is laid over hydrophobic filling cables with hydrophobic filling of the KVPepz and KVPepzBbShp grades (fig. LD), which together with the filled core provides moisture resistance

On top of the waist insulation, a screen is longitudinally applied (Fig. 1D pos. 5) from an aluminum-polymer tape. An aluminum-polymer tape with an aluminum layer with a nominal thickness of at least 0.10 mm is applied with an overlap of at least 15% for cables with a diameter under the sheath of up to 20 mm inclusive and at least 10% for cables with a diameter under the sheath of more than 20 mm. The aluminum-polymer tape is applied to the cable with metal inside. A tinned copper contact wire with a nominal diameter of 0.4-0.5 mm is laid along the screen along the screen. The screen enhances the mechanical strength of the cable and levels the electric field (contributes to the stability of its characteristics)

 A sheath (Fig. 1D pos. 6) of polyethylene is applied over the screen of the KVPEPpZ cables, KVPVep-cables are made of polyvinyl chloride plastic compound (Fig. 3 pos. B).

in the cables KVPPEPZBBSHP longitudinally over the screen a longitudinal polyethylene tape is applied (Fig. 1, pos. 9) and a steel tape corrugated with anti-corrosion coating - armor (Fig. 1, pos. 10) with a radial thickness of 0.1 mm without welding, which provides protection against damage by rodents. A protective polyethylene pshang (f11G.1 pos. 11) is applied over the tapes.

The radial thickness of the plastic sheath in the cables of all brands corresponds to the values given in table. 1-4

The way to use the utility model.

High-frequency local communication cable of brands KVGShepZ, KVPEPepZBbShp, KVPVep is intended for organizing subscriber access at the EATConcentrator and any automatic telephone exchange subscriber site. Two pairs allow organizing communication of 30 subscribers with ELTS when using encoding of an electrical signal and compression over the entire frequency range. In current-carrying conductors (Fig. 1.2 POE.1), the encoded electrical signal is transmitted from the source to the consumer. Insulation from polyethylene (Fig. 1,2 iro3.2) creates a geometrically stable insulating gap,

Description of elements of conspiracy, due to which it becomes possible to obtain a technical result - connecting a larger number of subscribers by expanding the range of transmitted frequencies, reducing energy losses and mutual interference.

Rolling of conductive conductors creates a geometrically stable insulation gap between conductors and grounded surfaces, which protects conductors from short circuit, as well as for safety, from electric shock .. In local high-frequency communication cables, insulation from solid polyethylene in the form of a concentric layer is applied to the core. PolyEthylene compositions for insulation of cores: grades 107-01 (02) K, 178-01 (02) K, 10201 (02) K, 153-01 (02) K GOST 16336.

The insulation thickness of the conductive cable. 1 high-frequency conductors is given in the table,

Conductive Diameter Nominal Thickness

veins, mm

0.5

0.64I 0.40

The properties of insulation as a dielectric have a decisive influence on the parameters of the cable, and therefore on the main indicators of signal transmission (width of the transmitted frequency range and communication range, noise level and energy loss).

The twisting of insulated cable conductors by unidirectional twisting with coordinated steps within 20-60 mm allows us to guarantee stable electrical performance (ohmic asymmetry of cores in a pair of not more than 1%, transient attenuation, etc.) tab. 1-5. The coefficients of attenuation and wave resistance are given in table. 1-6.

insulation mm

0.35

The colors of the pairs in the elementary decimal nuchka and decimal

Elementary knot twisting system

Table 1-1

core

Table 1-2

Coloring elementary nuchochki

Radial thickness of the plastic sheath (hose) of high-frequency cables

Table 1-3

Table 1-4

Electrical Parameters of High Frequency Local Communication Cables

Current frequency, kHz

Parameters

1. Electrical

resistance

conductive core

direct current

recalculated for 1 km

Lengths and Temperament

20 C, Ohm, for

core diameters

mm: 0.5 0.64

2. electrical insulation resistance of conductive cores, calculated per 1 km. Lengths, megohms, not less

3. Working capacity, recalculated for 1 km, nf

4. Ohmic asymmetry lived in pairs, no more, in%

D.C

5. Transient attenuation between circuits at the near end, not less than, dB / p.dl

Inside a five or ten-pair bundle:

At a frequency of 160 kHz 50% of combinations 40% of combinations 10% of combinations

at a frequency of 1024 kHz 50% of combinations 40% of combinations 10% of combinations

Table 1-5

Coefficient for

rate recalculated

90

L / 1000

55 + 3

1000 / L

5000

Also

L / 1000

45 + 5

0.8 or 1.0

1,0

70 65 60

65 60

At a frequency of 160 kHz 50% of combinations 40% of combinations 10% of combinations at a frequency of 1024 kHz 50% of combinations 40% of combinations 10% of combinations

Security between prices at the far end not less than, dB / page for Inside a ten-pair beam, at frequencies of 40, 80, 160 kHz

For 40% of combinations For 60% of combinations At 512, 1024 kHz For 40% of combinations For 60% of combinations

6. Exercising tension for 1 min. B, Hz)

between veins workers

par - between veins and

screen

7. Electrical

insulation resistance

outer shell and

cable hose

recalculated for 1 km,

Megohm, not less

75 70 65

70 65 60

65 60

55 50

1000 1500 2000 3000

5.0 Ratio

Table 1-6 Attenuation, impedance

Claims (1)

High-frequency local communication cable with copper conductors, with continuous polyethylene insulation, shielded, with or without hydrophobic filling, in a polyethylene or polyvinyl chloride sheath, with or without protective coating, designed to transmit an analog signal in the frequency range 12-552 kHz and transmit digital signals at speeds up to 2.048 Mbit / s with a nominal voltage of remote power supply up to 225 V AC or voltage up to 315 V DC, characterized in that the nominal the insulation thickness of the conductive conductors, which are twisted in pairs by unidirectional twisting with coordinated steps within 20-60 mm, due to which the range of transmitted frequencies is expanded, the number of connected subscribers increases, the level of mutual interference and energy loss to heat decreases.