RU2651874C2 - Mounting electric wire - Google Patents

Mounting electric wire Download PDF

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Publication number
RU2651874C2
RU2651874C2 RU2016133611A RU2016133611A RU2651874C2 RU 2651874 C2 RU2651874 C2 RU 2651874C2 RU 2016133611 A RU2016133611 A RU 2016133611A RU 2016133611 A RU2016133611 A RU 2016133611A RU 2651874 C2 RU2651874 C2 RU 2651874C2
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RU
Russia
Prior art keywords
wire
fluoroplastic
nickel
layer
core
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RU2016133611A
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Russian (ru)
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RU2016133611A (en
Inventor
Юрий Александрович Матвеев
Владимир Николаевич Лебедев
Рустам Исмайлович Исмайлов
Елена Владимировна Варзарь
Наталья Валентиновна Чулович
Вячеслав Викторович Калинин
Михаил Геннадьевич Курбатов
Виктор Николаевич Чепеленко
Original Assignee
Акционерное общество "Особое конструкторское бюро кабельной промышленности" (АО "ОКБ КП")
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Priority to RU2016133611A priority Critical patent/RU2651874C2/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame

Abstract

FIELD: cables.
SUBSTANCE: claimed invention relates to cable technology, in particular to the installation of heat-resistant electrical wires intended for use in radio electronic equipment. Mounting electrical wire comprises at least one core, coated with polymer insulation, where the vein is made of, at least one copper-plated silver wire with a nickel intermediate layer. In special cases, the insulation can be made of fluoroplastic sintered films, heat-sealable with each other, wire can contain a shield of copper silvered wires with an intermediate layer of nickel, as well as an outer protective shell of sintered fluoroplastic or polyimide-fluoroplastic films, which are heat-sealed together. Thickness of the intermediate layer of nickel in a copper silver-plated wire can be in the range from one to three micrometers.
EFFECT: claimed invention makes it possible to extend the service life of the wire to 35 years with prolonged exposure to elevated temperatures up to 200°C, and also to maintain the conductivity of conductors during operation and storage, to ensure a consistently high level of mechanical characteristics of conductors and wire shields.
8 cl, 1 dwg

Description

The claimed invention relates to one of the branches of the electrical industry - cable technology, and more particularly to mounting heat-resistant electrical wires intended for use in electronic equipment.
The assembly wire is known according to the description for the utility model patent of the Russian Federation No. 50336, IPC НВВ 7/02, containing at least one core coated with polymer insulation, characterized in that the core is made of twisted aluminum alloy wires or aluminum alloy. In one particular embodiment, each wire of said known mounting wire is coated with a material selected from the group silver, nickel, tin, an alloy of tin and lead, an alloy based on bismuth. Also, at least one copper or silver wire or at least one reinforcing thread of synthetic material may be introduced into the strand. The insulation can be made of fluoroplastic, or from a polyimide film, or from a polyimide fluoroplastic film. The known mounting wire may be further provided with a screen in the form of a metal braid superimposed on an insulated wire. The screen can be made of copper wire or of copper wire coated with silver. The screen wire can be made in the form of a spiral. Also, the screen can be made of synthetic yarn wrapped in copper or copper-silver rolled wire. A sheath made of a fluoroplastic or polyimide film or polyimide fluoroplastic film may be applied over the screen.
The disadvantages of the prior art aforementioned mounting wire according to the patent of the Russian Federation for utility model No. 50336 include insufficient service life.
In the prior art, the prototype of the invention is a single-core or multi-core mounting wire with sintered film insulation in accordance with TU 16-505.083-78 (copy attached), designed to operate at rated alternating voltage of 100, 200 and 500 V, frequencies up to 10000 Hz and, accordingly, constant voltage 150, 350 and 700 V and temperatures from minus 60 to plus 155 ° C with a screen of tinned copper wires and from minus 60 to plus 200 ° C for a wire with a screen of silver-plated copper wires and unshielded.
The conductive core of the known assembly wire according to TU 16-505.083-78 is made of silver-plated copper wires, insulated with a fluoroplast-4D film, applied in the form of a winding. Insulated conductors are twisted in a pair. A fluoroplastic-4 film can be superimposed on top of twisted cores. Over the insulation of a single-core wire or over twisted insulated conductors of a multi-core wire, a screen in the form of a braid made of tinned copper or silver-plated copper wires can be applied. A protective sheath in the form of a winding with PTFE-4D films can be applied over the screen.
The disadvantages of the known mounting wire according to TU 16-505.083-78 include the established service life of no more than 20 years, as well as insufficient minimum operating time of 10,000 hours at elevated temperatures, for example, at a temperature of 200 ° C, due to a decrease in mechanical properties and electrical conductivity of conductive conductors of silver-plated copper wire.
The problem to which the invention is directed is to create an electrical installation wire with an increased service life, with an increased minimum operating time in hours at elevated temperatures, including at a temperature of 200 ° C.
The technical result of the claimed invention is a consistently high level of mechanical characteristics of the mounting electrical wire during prolonged exposure to elevated temperatures up to 200 ° C, maintaining the conductivity of conductive conductors during operation and storage, and, as a result, increasing the life of the wire up to 35 years.
The essence of the claimed invention lies in the fact that the mounting electrical wire contains at least one core coated with polymer insulation, where the core is made of at least one silver-plated copper wire with an intermediate layer of nickel.
In one of the special cases of the installation of the electrical installation wire, the core is covered with fluoroplastic insulation.
In another particular case, the execution of the mounting electrical wire, the core is covered with insulation from sintered films, heat-sealable to each other.
In the third particular case of the execution of the mounting electrical wire, it further comprises a screen superimposed on at least one core.
In the fourth particular case of the execution of the mounting electrical wire with a screen, its screen can be made of silver-plated copper wires with an intermediate layer of nickel.
In the fifth particular case of the execution of the mounting electrical wire, it further comprises an external protective sheath.
In the sixth particular case of the execution of the mounting electrical wire with an external protective sheath, its external protective sheath is made of sintered fluoroplastic or polyimide-fluoroplastic films that are heat-welded together.
In the seventh particular case of the execution of the mounting electrical wire, the intermediate layer of nickel in a silver-plated copper wire has a thickness ranging from one to three micrometers.
The essence of the invention is illustrated by the drawing, which shows the inventive mounting electrical wire in cross section.
The wire contains a multi-wire conductive core 1 of a silver-plated copper wire with an intermediate layer of nickel (Cu-Ni-Ag), which is coated with insulation 2, consisting, for example, of two or four layers (depending on cross-section and rated voltage) of fluoroplastic films, heat sealable by heat treatment.
From the declared wires, it is possible to produce single-core and multicore wires, shielded, as well as shielded in a protective sheath, for example, from sintered PTFE films.
If the wire is shielded, the screen can be made of silver-plated copper wires with an intermediate layer of nickel.
The outer protective shell can be made, for example, of sintered fluoroplastic or polyimide-fluoroplastic films, heat-sealable between each other.
According to the test results, the thickness of the intermediate layer of Nickel can be in the range from one to three micrometers.
The use of an intermediate layer of nickel in a silver-plated copper wire in combination with fluoroplastic insulation allows to increase the service life of the wire up to 35 years with prolonged exposure to elevated temperatures up to 200 ° C, allows you to save the conductivity of conductive conductors during operation and storage, to ensure a consistently high level of mechanical characteristics conductors and screen wire.
As an additional technical result of the claimed invention, it should also be noted the increased corrosion resistance of the wire relative to the prototype.
The table below shows the test results of the inventive wire in comparison with the prototype, which investigated such characteristics as tensile strength (σ in , MPa), elongation (δ,%), electrical resistivity (ρ, Ohm mm 2 / m ) on the example of wires with a residential diameter of 0.12 mm after exposure to a temperature of 200 ° C for 5000 and 10000 hours.
Figure 00000001
Tests have shown that when exposed to a temperature of 200 ° C on a wire made of silver-plated copper wire with an intermediate layer of nickel (Cu-Ni-Ag), in contrast to the prototype, wires made of copper-silver plated wire (Cu-Ag) reduce the elongation (δ, %), as well as the tensile strength (σ in , MPa) is significantly less. This allows you to maintain mechanical characteristics in the ranges that ensure the operability of the wire, including at alternating loads, which leads to the possibility of increasing the fault-free life of the wire.
As a result of the tests, it was revealed that the optimal thickness of the intermediate layer of nickel in the silver-plated copper wire of the core of the inventive wire should be from about one to three micrometers. When the thickness of the intermediate layer of Nickel is less than one micrometer, the disadvantages characteristic of the prototype will appear.
For the manufacture of wires using industrially produced materials that comply with regulatory documentation. A wire is made according to the technology traditional for this type of product. As an example, the core 1 can be made by twisting the wire on a twisting machine, the application of insulation 2 can be carried out by winding the film on a winding machine. The screen can be made on a braiding machine. The shell can be applied by winding a film on a wrapping machine (not shown in the drawing).
Thus, the claimed mounting electrical wire due to its increased characteristics in terms of service life can be widely used in cable technology, including those intended for use in electronic equipment.

Claims (8)

1. Installation electric wire containing at least one core coated with polymer insulation, characterized in that the core is made of at least one silver-plated copper wire with an intermediate layer of nickel.
2. The mounting electrical wire according to claim 1, characterized in that the core is coated with fluoroplastic insulation.
3. The mounting electrical wire according to claim 1, characterized in that the core is coated with insulation from sintered films heat-sealable to each other.
4. The mounting electrical wire according to claim 1, characterized in that it further comprises a screen superimposed on at least one core.
5. The mounting electrical wire according to claim 4, characterized in that the screen is made of silver-plated copper wires with an intermediate layer of nickel.
6. The mounting electrical wire according to claim 1, characterized in that it further comprises an external protective sheath.
7. The mounting electrical wire according to claim 6, characterized in that the outer protective sheath is made of sintered fluoroplastic or polyimide-fluoroplastic films that are heat-sealable to each other.
8. The mounting electrical wire according to claim 1, characterized in that the intermediate layer of nickel has a thickness ranging from one to three micrometers.
RU2016133611A 2016-08-16 2016-08-16 Mounting electric wire RU2651874C2 (en)

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Application Number Priority Date Filing Date Title
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RU2651874C2 true RU2651874C2 (en) 2018-04-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU189714U1 (en) * 2019-02-01 2019-05-31 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Multiplayed screened fire-resistant on-board wire
RU189713U1 (en) * 2019-02-01 2019-05-31 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Mono-fireproof on-board wire
RU189777U1 (en) * 2019-02-01 2019-06-04 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Multiplayed screened fire-resistant on-board wire
RU189776U1 (en) * 2019-02-01 2019-06-04 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Mono-steeled screened fire-resistant on-board wire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636242A (en) * 1968-12-09 1972-01-18 Ericsson Telefon Ab L M An electric conductor wire
RU2179348C2 (en) * 2000-04-03 2002-02-10 Совместное Российско-американское предприятие "Уралтранс" Electrical conductor (alternatives)
RU94753U1 (en) * 2009-10-26 2010-05-27 Закрытое акционерное общество "Группа Компаний Системной Консолидации" (ЗАО "Группа КСК") Electric wire
RU95426U1 (en) * 2010-03-01 2010-06-27 Закрытое акционерное общество "Группа Компаний Системной Консолидации" (ЗАО "Группа КСК") Electric wire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636242A (en) * 1968-12-09 1972-01-18 Ericsson Telefon Ab L M An electric conductor wire
RU2179348C2 (en) * 2000-04-03 2002-02-10 Совместное Российско-американское предприятие "Уралтранс" Electrical conductor (alternatives)
RU94753U1 (en) * 2009-10-26 2010-05-27 Закрытое акционерное общество "Группа Компаний Системной Консолидации" (ЗАО "Группа КСК") Electric wire
RU95426U1 (en) * 2010-03-01 2010-06-27 Закрытое акционерное общество "Группа Компаний Системной Консолидации" (ЗАО "Группа КСК") Electric wire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ТУ 16-505.083-78. Провод монтажный с изоляцией из спекаемой пленки. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU189714U1 (en) * 2019-02-01 2019-05-31 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Multiplayed screened fire-resistant on-board wire
RU189713U1 (en) * 2019-02-01 2019-05-31 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Mono-fireproof on-board wire
RU189777U1 (en) * 2019-02-01 2019-06-04 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Multiplayed screened fire-resistant on-board wire
RU189776U1 (en) * 2019-02-01 2019-06-04 Акционерное общество "Особое конструкторское бюро кабельной промышленности" Mono-steeled screened fire-resistant on-board wire

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