RU103662U1 - Fire resistant cable - Google Patents

Fire resistant cable Download PDF

Info

Publication number
RU103662U1
RU103662U1 RU2010148007/07U RU2010148007U RU103662U1 RU 103662 U1 RU103662 U1 RU 103662U1 RU 2010148007/07 U RU2010148007/07 U RU 2010148007/07U RU 2010148007 U RU2010148007 U RU 2010148007U RU 103662 U1 RU103662 U1 RU 103662U1
Authority
RU
Russia
Prior art keywords
cable
tape
wires
filling
superimposed
Prior art date
Application number
RU2010148007/07U
Other languages
Russian (ru)
Inventor
Михаил Юрьевич Шувалов
Михаил Кузьмич Каменский
Андрей Александрович Фрик
Алексей Анатольевич Сливов
Дмитрий Анатольевич Попов
Олег Витальевич Команденко
Любовь Ефимовна Налетова
Евгений Владимирович Федотов
Original Assignee
Открытое акционерное общество Всероссийский научно-исследовательский, проектно-конструкторский и технологический институт кабельной промышленности (ВНИИИ КП)
Открытое акционерное общество "Иркутсккабель" (Иркутсккабель)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Открытое акционерное общество Всероссийский научно-исследовательский, проектно-конструкторский и технологический институт кабельной промышленности (ВНИИИ КП), Открытое акционерное общество "Иркутсккабель" (Иркутсккабель) filed Critical Открытое акционерное общество Всероссийский научно-исследовательский, проектно-конструкторский и технологический институт кабельной промышленности (ВНИИИ КП)
Priority to RU2010148007/07U priority Critical patent/RU103662U1/en
Application granted granted Critical
Publication of RU103662U1 publication Critical patent/RU103662U1/en

Links

Abstract

 1. A power cable containing three conductive wires and sequentially located on each of them, the first screen of an electrically conductive cross-linked polymer composition, insulation of a cross-linked polyethylene composition, a second screen of an electrically conductive cross-linked polymer composition, a tape winding of an electrically conductive material, a metal screen, twisted screened wires into a common core around a central filling, interfacial filling and an extruded outer shell, characterized in that the interfacial filling is made of Vintes 3020 halogen-free polyolefin composition and outer shell made of halogen-free polyolefin composition, Vintes 2010 brand! 2. The cable according to claim 1, characterized in that the metal screen is made of copper wires fastened spirally superimposed with copper tape or a pile of copper wires. ! 3. The cable according to claim 1, characterized in that it further comprises, on top of the wires twisted into the core, a fastening tape superimposed with a gap. ! 4. The cable according to claim 1 or 3, characterized in that it further comprises, on top of the interfacial filling, the armor in the form of a winding of metal tapes superimposed overlapping, or in the form of spirally superimposed metal wires. !5. The cable according to claim 1 or 3, characterized in that it further comprises, on top of the interfacial filling, a separation layer in the form of a winding made of at least one glass tape, or glass mica tape, or a copper or aluminum tape, superimposed overlapping. ! 6. The cable according to claim 1 or 3, characterized in that it further comprises, on top of the interphase filling, a section

Description

The utility model relates to cable technology, namely, to the construction of power cables with plastic insulation and a sheath, designed for transmission and distribution of electrical energy in stationary electrical installations with an alternating voltage of 6 and 10 kV at a frequency of 50 Hz at an ambient temperature of minus 50 ° C to plus 50 ° C and relative humidity up to 98% at a temperature of plus 35 ° C.
Known power cables for a voltage of 10 kV with a frequency of 50 Hz, having three conductive cores and sequentially located on each of them, a first screen of an electrically conductive cross-linked polymer composition, insulation of a cross-linked polyethylene composition, a second screen of an electrically conductive cross-linked polymer composition, winding a tape of electrically conductive material, a metal screen, shielded cores are twisted into a common core around a central filling, interfacial filling and an extruded outer sheath (PvVng cable ( ) -LS in accordance with TU 16.K71-335-2004 "Power cables with cross-linked polyethylene insulation for voltage 10, 20, 35 kV. Information and technical reference book Cable products. Volume 1. Power cables, wires and cords. Part 1. M .: JSC "VNIIKP", 2009, p. 167).
However, such cables, satisfying a set of basic fire safety characteristics (non-proliferation of combustion in beams, low optical density of smoke during combustion and smoldering), do not ensure operability (i.e., are not fire resistant) in case of a fire for a specified time.
The task was to develop the design of the power cable that maintains operability when exposed to a flame for at least 30 minutes.
The technical result is achieved in that in a power cable containing three conductive wires and sequentially located on each of them, a first screen of an electrically conductive cross-linked polymer composition, insulation of a cross-linked polyethylene composition, a second screen of an electrically conductive cross-linked polymer composition, winding with a tape of electrically conductive material, metal screen, shielded cores are twisted into a common core around a central filling, interfacial filling and an extruded outer shell, interfacial the filling is made of a halogen-free polyolefin composition of Vintes brand 3020 and the outer shell is made of a halogen-free polyolefin composition of Vintes 2010 brand.
The metal screen of the cable can be made of copper wires fastened spirally imposed copper tape or a pile of copper wires.
The cable may contain over the cores twisted into a core a fastening tape superimposed with a gap.
The cable may additionally contain over the interfacial filling armor in the form of a winding of metal tapes superimposed overlapping, or in the form of spirally superimposed metal wires.
Also, the cable may additionally contain, on top of the interfacial filling, a separation layer in the form of a winding made of at least one glass tape or glass mica tape or copper or aluminum tape, overlapped.
Also, the cable may further comprise, on top of the interfacial filling, a separation layer in the form of a longitudinally applied metal-polymer tape.
Also, the cable may further comprise an extruded inner sheath and armor sequentially arranged on top of the interfacial filling in the form of a winding of metal tapes superimposed overlapping, or in the form of spirally superimposed metal wires.
The utility model is illustrated in the drawing, which shows a power cable in section.
The power cable contains three conductive conductors 1, on top of each of which the first electrically conductive screen 2 is arranged sequentially, insulation 3 is made from a cross-linked polyethylene composition, the second electrically conductive screen 4, a tape 5 is made of electrically conductive material, and the metal shield 6. The conductors are twisted into a common core around the central filling 7. On top of the core, the cable contains a fastening tape 8, superimposed with a gap, interfacial filling 9, on top of the interfacial filling the separation layer 10, the inner shell 11, the armor 12 in the form e windings of metal tapes superimposed overlapping, or in the form of spirally imposed metal wires, the outer shell 13.
The following is information confirming the feasibility of implementing a utility model.
As a material for the electrically conductive screens 2 and 4, an electrically conductive cross-linked polymer composition is used.
As the insulation material of 3 cables, a cross-linked polyethylene composition is used.
As the material of the winding 5, an electrically conductive tape is used.
As the material of the central filling 7 and the inner shell 11, flame-retardant halogen-free polymer compositions or a halogen-free polyolefin composition of the brand Vintes 2010 manufactured according to TU U 24.1-30989828-012: 2007 are used.
As a material for interfacial filling of the 9th cable, a halogen-free polyolefin composition of the Vintes 3020 brand, produced according to TU U 24.1-30989828-012: 2007, is used.
As the material of the separation layer 10, glass tape or glass mica tape, or copper or aluminum tape, superimposed by a winding with overlapping or metal-polymer tape, imposed longitudinally with overlapping, can be used.
As the material of the wires or tapes of the armor 12, galvanized steel, aluminum or an aluminum alloy is used.
As the material of the outer sheath 13 of the cable, a halogen-free polyolefin composition of the brand Vintes 2010, produced according to TU U 24.1-30989828-012: 2007, is used.
The materials used for the manufacture of the proposed cable are manufactured industrially and are widely used in the manufacture of power cables.
Conducting cores 1 are made of wire, traditional for electric cables, the twisting of the cable elements is carried out on conventional twisting equipment.
The application of electrically conductive screens 2 and 4 and insulation 3 and their stitching is carried out on continuous vulcanization lines, and the central filling 8, interfacial filling 9, extruded inner shell 11 and outer shell 13 are applied on extrusion equipment.
The imposition of a metal screen 6 and armor 12, consisting of a helically imposed metal wires, carried out on the known twisting equipment, traditionally used in the cable industry.
The imposition of a winding 5 of tapes of an electrically conductive material, a winding of a tape 8, a separation layer 10 made by a winding, an armor 12 consisting of metal tapes is carried out on winding machines used in the cable industry.
The proposed power cable was tested for non-proliferation of combustion during group laying according to GOST R IEC 60332-3-22, for determining the optical density of smoke during combustion and smoldering in accordance with GOST R IEC 61034-2-2005 and for maintaining operability under conditions of flame exposure on equipment according to , GOST R IEC 60331-11 when applying the rated operating voltage. The test results are shown in table 1.
Table 1.
Cable specifications
Name of characteristic Technical requirements Cable product
Famous cable Proposed cable
1. The preservation of performance under conditions of flame exposure when a rated operating voltage is applied, min not less than 30 23 does not match 38 corresponds
2. Non-proliferation of combustion during group laying during testing in accordance with GOST R IEC 60332-3-22
- The length of the charred or damaged part of the flame, m no more than 2.5 1.0 corresponds 0.9, corresponds
3. Smoke during combustion and decay during testing in accordance with GOST R IEC 61034-2-2005
- Preservation of light transmission,% not less than 50 50 corresponds 58% match
Based on the test results presented in table 1, we can conclude that the proposed cable design provides not only compliance with the requirements for the main fire safety characteristics, such as non-propagation of combustion in beams, low optical density of smoke during combustion and smoldering, but also maintaining cable operability a line made by the above cable in case of fire for more than 30 minutes.
Thus, the technical result is to increase the fire safety of the cable.

Claims (7)

1. A power cable containing three conductive wires and sequentially located on each of them, the first screen of an electrically conductive cross-linked polymer composition, insulation of a cross-linked polyethylene composition, a second screen of an electrically conductive cross-linked polymer composition, a tape winding of an electrically conductive material, a metal screen, twisted screened wires into a common core around a central filling, interfacial filling and an extruded outer shell, characterized in that the interfacial filling is made of Vintes 3020 halogen-free polyolefin composition, and the outer shell is made of a halogen-free polyolefin composition, Vintes 2010 brand.
2. The cable according to claim 1, characterized in that the metal screen is made of copper wires fastened spirally superimposed with copper tape or a pile of copper wires.
3. The cable according to claim 1, characterized in that it further comprises, on top of the wires twisted into the core, a fastening tape superimposed with a gap.
4. The cable according to claim 1 or 3, characterized in that it further comprises, on top of the interfacial filling, the armor in the form of a winding of metal tapes superimposed overlapping, or in the form of spirally superimposed metal wires.
5. The cable according to claim 1 or 3, characterized in that it further comprises, on top of the interfacial filling, a separation layer in the form of a winding made of at least one glass tape, or glass-mica tape, or copper or aluminum tape, superimposed overlapping.
6. The cable according to claim 1 or 3, characterized in that it further comprises, on top of the interfacial filling, a separation layer in the form of a longitudinally applied metal-polymer tape.
7. The cable according to claim 1 or 3, characterized in that it further comprises an extruded inner sheath and armor arranged sequentially on top of the interfacial filling in the form of a winding of metal tapes superimposed overlapping, or in the form of spirally imposed metal wires.
Figure 00000001
RU2010148007/07U 2010-11-25 2010-11-25 Fire resistant cable RU103662U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2010148007/07U RU103662U1 (en) 2010-11-25 2010-11-25 Fire resistant cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2010148007/07U RU103662U1 (en) 2010-11-25 2010-11-25 Fire resistant cable

Publications (1)

Publication Number Publication Date
RU103662U1 true RU103662U1 (en) 2011-04-20

Family

ID=44051741

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2010148007/07U RU103662U1 (en) 2010-11-25 2010-11-25 Fire resistant cable

Country Status (1)

Country Link
RU (1) RU103662U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU180838U1 (en) * 2017-12-22 2018-06-28 Общество с ограниченной ответственностью "ТАТКАБЕЛЬ" FIRE RESISTANT CABLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU180838U1 (en) * 2017-12-22 2018-06-28 Общество с ограниченной ответственностью "ТАТКАБЕЛЬ" FIRE RESISTANT CABLE

Similar Documents

Publication Publication Date Title
RU175260U1 (en) Power cable
RU189783U1 (en) Fire-resistant power cable
RU162467U1 (en) Multi-cable power fire resistant cable with combined insulation and halogen-free shells
RU42349U1 (en) Power cable
RU102424U1 (en) Power cable
RU167142U1 (en) Power cable, not distributing combustion, with sector conductors and insulation from crossed polyethylene
RU174055U1 (en) Power cable
RU172185U1 (en) Control cable
RU164397U1 (en) Three-way power cable with integrated polyethylene
RU103662U1 (en) Fire resistant cable
RU134353U1 (en) Combined cable
RU87037U1 (en) Power cable
RU103661U1 (en) Fire resistant cable
RU161729U1 (en) Single-steel cable fire resistant with combined insulation and halogen-free shells
RU161780U1 (en) Multi-cable power fire resistant cable with combined insulation of reduced fire hazard
RU102140U1 (en) Power cable
RU86035U1 (en) Power cable
RU134352U1 (en) Combined cable
RU42348U1 (en) Power cable, not distributing combustion
RU50338U1 (en) Power cable
RU92567U1 (en) Power cable
RU135844U1 (en) Mounting cable for rolling composition of rail transport
RU140625U1 (en) Fire resistant cable
RU40523U1 (en) Cable control
RU109320U1 (en) Cable small