Some standard content:
GB/T2900.102001
This standard is revised based on the contents of IEC60050 (461): 1984 (1st edition) "Electrical Cables and Its Amendment No. 1 (1993) and Amendment No. 2 (1999)" published by the International Electrotechnical Commission (IEC), and is equivalent to it in terms of technical content. IEC60050 (461): 1984 was formulated by IEC/TC1 "Electrotechnical Terminology Committee". In order to let users understand the correspondence between the terms in this standard and IEC60050 (461), this standard directly adopts the article numbers in IEC60050 (461) in editing, that is, the term item numbers in this standard correspond to the technical review article numbers of IEC60050 (461). In order to facilitate searching, a Chinese index (Appendix A) is added on the basis of the English index. Appendices A and B of this standard are both informative appendices. This standard was first published in 1984.
This standard replaces GB/T2900.101984 from the date of implementation. This standard is proposed by the National Technical Committee for Standardization of Electrical Terminology. This standard is jointly drafted by the National Technical Committee for Standardization of Electrical Terminology and the National Technical Committee for Standardization of Wires and Cables. The drafting unit of this standard is Shanghai Cable Research Institute. The main drafters of this standard are Shu Yingchun and Zhuang Meng. GB/T 2900. 10--2001
IEC Foreword
1) IEC's formal resolutions or agreements on electrotechnical issues are formulated by technical committees with the participation of national committees that are particularly concerned about these issues. It reflects the international consensus on these issues as much as possible. 2) They are used internationally in the form of recommendations and are accepted by national committees. 3) In order to promote international unification, IEC expresses the desire that national committees adopt IEC recommended texts in their respective national regulations when conditions permit. Any differences between the recommended texts and the corresponding national regulations should be clearly stated in their national regulations.
This standard was formulated by IEC Technical Committee 1 "Terminology". This standard is based on the following documents:
June Law
1(IEV461) (Central Office) 1185
Voting Report
1(IEV461) (Central Office) 1207
Voting for approval of the standard can be found in the "Voting Report" listed in the table above. 2
1 Scope
National Standard of the People's Republic of China
Electrotechnical Vocabulary
Electrotechnical Vocabulary--Electric Cables This standard specifies the special terms for cables. 2 Cable Terms
2.1 Cable Components
2.1.1 Conductor
461-01-01【Cable】Conductor conductor (of a cable) A component in a cable that has the specific function of conducting current. Plain conductor
461-01-02
A conductor consisting of a single or multiple metal wires not plated with other metalsMetal coated conductormetal coated conductor461-01-03
GB/T 2900. 10--2001
idt 1EC 60050(461):1984
Replaces GB/T2900.101984
A conductor in which each metal wire is plated with a thin layer of other different metals or metal alloys. Tinned conductortinned conductor
461-01-04
Metal-clad conductor coated with tin,
5Metal-clad conductormetal-clad conductor461-01-05
A conductor consisting of a single wire with a metal as the inner core and another metal as the outer layer by metallurgical processing. 461-01-06Solid conductorsolid conductorA conductor consisting of a single wire.
Note: Solid conductors can be round or non-circular.Stranded conductorstranded conductor
461-01-07
A conductor consisting of several single wires or strands, usually all or part of the single wires or strands are spiral. Note
Stranded conductors can be round or non-circular. 1
2The term "strand" can also represent a single wire.3Concentrically stranded circular conductor461-01-08
A number of single wires are twisted together in a spiral to form a stranded conductor with one or more concentric layers, and the twist of adjacent layers is usually opposite.
461-01-09
461-01-10
Bunched conductor
Bundled conductor
A stranded conductor formed by randomly twisting a number of single wires together in a spiral in the same direction and at the same pitch.Multiple stranded conductorA stranded conductor formed by twisting several wire groups together in one or more spiral layers. The single wires in each wire group can be bundled or twisted.
461-01-11Flexible conductor conductor General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued on November 16, 2001 Implementation on August 1, 2002 GB/T 2900. 10-2001 Stranded conductor suitable for use in flexible cables, made by twisting single wires with sufficiently small diameters 461-01-12 Shaped conductor Shaped conductor A conductor with a non-circular cross-sectional shape.
461-01 13 Sector shaped conductor Sector shaped conductor A shaped conductor with a cross-sectional shape that is approximately the shape of a sector of a circle. 461-01-14 Compacted conductor Compacted conductor Stranded conductor that is mechanically compressed or drawn or that appropriately selects the shape and arrangement of the single wires to reduce the gaps between the single wires 461-01-15 Divided conductor Milliken conductor Stranded conductor consisting of a stranded conductor with thin insulation between phases Hollow conductor Hollow conductor
461-01-16
Conductor with a central channel.
461-01-17
Concentric conductor
Concentric conductor
Conductor wrapped around one or more insulated cores. 461-01-18
Tinsel conductor
Conductor consisting of one or more elements twisted together, each element consisting of one or more thin metal strips spirally wrapped around a fiber wire and supported by the fiber wire. 461-01-19 Concentric strand A component of a twisted conductor. A component consists of single wires twisted together in groups. Note: The term "strand" can also mean a single wire. 461-01-20 Bunched strand A component of a twisted conductor. The single wires in each component are twisted together in a spiral in the same direction and at the same pitch, but without separate layers. 461-01:21
Concentric neutral (conductor) A concentric conductor used as a neutral conductor.
2.1.2 Insulation
461-02-01 [Cable|Insulation
Insulation (of a cable)
Insulating material in a cable with a specific function of withstanding voltage. 461-02-02
Conductor insulation
Conductor insulation
Insulation wrapped around a conductor or conductor shield 3 Lapped insulation
461-02-03
Insulation consisting of insulating tape spirally wrapped into concentric layers. 461-02-04
461-02-05
461-02-06
Impregnated paper insulation Impregnated paper insulation Wrapped insulation consisting of paper with no insulation material. Pre-impregnated (paper) insulation Pre-impregnated (paper) insulation Paper insulation that is pre-impregnated before paper tape wrapping, nass-inpregnated (paper) insulation Paper insulation that is impregnated after paper tape wrapping Mass-imprcgnated non-draining insulation 461-02-07
Paper insulation that is impregnated without liquid impregnation agent at the highest continuous operating temperature. 461-02-08 Extruded insulation Extruded insulation Insulation that is usually composed of a layer of thermoplastic or thermosetting material and is coated by extrusion technology. 461-02-09
Mineral insulation Mineral insulation
Insulation composed of compacted mineral powder, 461-02-10
Thermoplastic insulation GB/T 2900.10-- 2001
Insulation made of plastic that can be repeatedly heated to soften and cooled to harden within its plastic characteristic temperature range, and can be repeatedly extruded in the softened state.
461-0211 Thermosetting insulation Insulation made of plastic that will become a refractory and insoluble product after being cured by heating or other methods such as radiation, catalysis, etc.
461-02-12 Cross-linked insulation insulation Insulation made of thermoplastic materials or copolymers or mixtures based on one of these materials by chemical reactions such as cross-linking or vulcanization or by physical methods such as radiation curing to change its internal molecular structure. 46102-13 Elastomeric insulation elastomeric insulation Insulation made of materials that deform under small mechanical stress and return to their original state after the stress is removed. Note: This type of insulation is generally cross-linked, but can also be thermoplastic. 2.1.3 Electrical shielding and grounding metallic shielding
461-03-01 [Cable] Shielding
Screen (of a cable)
A conductive layer that can control the electric field inside the insulation and make the surface of the insulation interface smooth, thereby eliminating the gaps at the interface.
461-03-02
461-03-03
Conductor shielding conductor screen
An electrical shield of non-metallic and/or metallic materials wrapped around a conductor. Insulation screen
Insulation core screen
Core screen
An electrical shield of non-metallic and/or metallic materials wrapped around insulation. 461-03-04 [Cable] Grounding shield; [Grounding] Metal shield shield (of acable) An outer grounding metal layer that limits the electric field to the inside of the cable and/or protects the cable from external electrical interference. Note: Metal sheaths, metal foils, braids, armor layers and grounded concentric conductors can also be used as grounding metal shields. 461-03-05
5 Strippable screen
An insulating screen made of extruded material that can be completely removed without the use of special tools, solvents, heating or any of the above methods.
bonded screen
461-03-06
An insulating screen that can be removed only by special tools, solvents, heat or any of the above methods. 461-03-07
Drain wire; continuity wireAn uninsulated metal wire placed in contact with the shield or ground shield2.1.4 Cabling
461-04-01 Pitch
length of lay
The axial length of the entire spiral
The cable component forms
2 Pitch ratio layratio
461-04-02
The ratio of the pitch to the diameter of the spiral formed by a cable componentNote: Depending on the situation, the diameter can be the inner diameter of the layer where the component is located, the length mean square diameter or the outer diameter. 3 Direction of lay
461-04-03
The direction of rotation of a cable component relative to the longitudinal axis of the cable Note: When the visible part of the spiral and the two sections that define it form the shape of the letter S, it is called right-hand twisting; when it forms the shape of an S, it is called twisting in between:
461-04-04 Insulated conductor core; insulated conductor (used in North America) A group consisting of a conductor and its insulation and screen (if any). Note: In North America, the insulated core of a cable: It is defined as the entire sheath of the cable, such as protective goods. The random parts of the spare parts are not used in this way. 461-04-05 Filler
GB/T2900.10—2001
Material used to fill the gaps between the insulated cores of a "multi-core cable". 461-04-06 Twisted loom; cabled assembly A cable without a unified sheath, consisting of multiple insulated wire cores or multiple single-core cables twisted together. 461-04-07 SZ cabling
A cabling method in which the twisting direction of each cable component is periodically turned. 461-04-08 Pilot core; pilot wire (not recommended) An insulated core used to transmit signals in the core of a power cable. 2.1.5 Sheath and various components
461-05-01F
Separaton
A thin barrier layer used to prevent harmful interactions between different components in the cable, such as conductors and insulation or insulation and sheath. 461-05-02
461-05-03
Inner covering
A non-metallic covering that covers the core and filler (if any) of a multi-core cable1 and is located under the protective layer. Sheath; Jacket (used in North America) is a continuous tubular covering of metallic or non-metallic material, usually extruded. Note: In North America, the term sheath is usually used for metallic sheaths, while the term jacket is only used for non-metallic sheaths. Oversheath; outer sheath; protective (overall) jacket (used in North America) 461-05-043
A non-metallic sheath usually wrapped around the outside of the metal layer to protect the cable from the outside. Notes
1 In North America, the term sheath is usually used for the metal coating, while the term jacket is only used for the non-metallic coating. 2 In special interconnections, the outer sheath can also serve as electrical insulation for the conductive coating. Reinforcement
461-05-05
Wrapped around the outside of the sheath, usually a metal tape, strip or wire to enable the sheath to withstand mechanical stresses generally caused by internal pressure.
461-05-06
Armor
armour
A coating composed of metal tape or wire, usually used to protect the cable from external mechanical forces. 461-05-07 Spiral binder tape Metal tape wrapped around the outside of the metal wire armor layer in a spiral gap to fix the armor layer. Bedding
461-05-08
A layer or several layers of padding wrapped tightly against the inner surface of the cable metal layer such as the armor layer or reinforcement layer. Serving
461-05-09
A layer or several layers of non-extruded layers on the outer surface of the cable. 461-05-10
Braid
A covering made of metal or non-metallic materials. 461-05-11
Skid wire
A D-shaped metal wire wrapped around the insulated core of a tubular cable with a longer pitch, so that the insulated core is easy to slide when it is pulled into the tube and provides mechanical protection.
461-05-12
2 Corrugated metallic sheath corrugated metallic sheath with generally annular or spiral corrugations. 461-05-13
Inner sheath inner sheath; inner jacket (used in North America) Instructions for use:
1 The original text is multi-conductor cable, which should be "multi-core cable" according to the actual meaning. GB/T2900.10-2001
Avoid non-metallic sheaths commonly used under metal sheaths, reinforcement layers or armor layers. 461-05-14 [
Barrier sheath; Barricr jacket (used in North America) Sheath that protects insulation and common shielding from external pollution Note: In special cases, the barrier sheath can also be used as electrical insulation for other conductive layers. 461-05-15 Water-blocking powder waterhlocking Powder:swellingpowder Powder filled under the sheath or in the gaps between conductors to prevent moisture from migrating along the cable under the sheath (for example, the sheath has been damaged) or to prevent moisture from migrating through the conductor (for example, the layers of the cable that can reach the conductor have been damaged) 461-05-16
Water blocking tape:swelling lape Tape filled under the sheath or in the gaps between conductors. Used to prevent moisture from migrating along the cable under the sheath (for example, the sheath has been damaged); or to prevent moisture from migrating through the conductor (for example, the layers of the cable that can reach the conductor have been damaged). 461-05-17
Water blocking glue;swelling glue Glue filled under the sheath or in the gaps between conductors to prevent moisture from migrating along the cable under the sheath (for example, the sheath has been damaged) or to prevent moisture from migrating through the conductor (for example, the layers of the cable that can reach the conductor have been damaged) 461-05-18Multilayered sheath;multilayered Jacket (used in North America) is a fully bonded and inseparable jacket made of two or more layers of compatible materials extruded at the same time: Notes
1 This jacket is usually tested and tested as a single-layer jacket, 2 This jacket can be made of multiple layers of the same material 461-05-19
separation sleeve
inner jacket between two metal sheaths of different materials, 2.2 Cable
2.2.1 Cable Overview
461-06-01 Insulated cable insulated cable is an assembly consisting of the following components:
- one or more insulated cores;
... their respective sheaths (if any), core protective layers (if any),
outer protective layers (if any);
the cable may have additional uninsulated conductors. Single-conductor cable: single-core cable 461-06-021
A cable with only one insulated core.
461-06 03
Multiconductor cable: a cable with more than one conductor, some of which may be optically insulated conductors. 461-06-04
Multicore cable: a cable with more than one insulated core. 461-06-05
5 "Multicore" flat cable flat (multicore) cable a multicore cable with multiple insulated wires or multiple groups of insulated wire cores arranged in parallel to form a fan-shaped shape, 461-06-06
461-06-07
collectively shiclded cable
collectively shiclded cable
a multicore cable with a shielding layer concentric with the cable axis wrapped around the cable core. concentric neutral cable concentric neutral cable a cable with an inter-core conductor as the neutral line. single-phase concentric neutral cable single-phase concentric neutral cable 461-06-08
single-core cable with a concentric conductor as the neutral line GB/T 2900. 10
9 three-phase concentric neutral cable three-phase concentric neutral cable 461 06 09
Three-core cable with concentric conductor as neutral line. 461-06-10 Split concentric cable Split concentric cable A cable with two conductors on the same or concentric layer separated by insulating material 461-06-11
461 06.12
461-06-13
Belted cable
Multi-core cable with insulation wrapped around each conductor and the rest of the insulation wrapped around the cable core Individually screened cable Radial field cable Cable with shielding layers wrapped around each insulated core. Separate lead-sheathed cable
Separately lead-sheathed cable; SLcabicTwo-core cable with each insulated core extruded with lead or lead alloy sheath. 461-06-14Flexible cableA cable that is required to be flexible when in use, and whose structure and materials can meet this requirement. 461-06-15
Cord
A flexible cable composed of a limited number of small-section conductors. 461-06-16
461-06-17
Cord set
An assembly consisting of a flexible cable or cord equipped with a non-reconnectable plug and a non-reconnectable connector, used to connect electrical appliances and power supplies
Extension set
Cord extension set
An assembly consisting of a flexible cable or cord equipped with a non-reconnectable plug and a matching non-reconnectable portable socket. Note: When the plug and socket do not match, this set of wires is called a set of wires with an adapter. 461-06-18
3 Earth electrode: ground electrode (used in the United States) is a root or group of conductors that are in close contact with the ground and provide electrical connection to the ground. 461-06-19
9 Earth conductor: ground conductor (used in the United States) is a low-impedance conductor that provides an electrical connection between a designated point on a device (installation or system) and a ground electrode.) Uninsulated earth conductor; uninsulated ground conductor (used in the United States) 461-06-20
A bare conductor that is in direct contact with the soil and has corrosion protection (when necessary) to ensure the integrity of the grounding along the line. Note: A bare ground conductor can be used as a grounding conductor and/or a grounding electrode: 2.2.2 Power cable
461-07-01 Pressure cable
pressure cable
A cable whose insulation is under pressure through a fluid. 461-07-02
461.07.03
Self-contained pressure cableSelf-contained pressure cableA cable filled with pressurized fluid in a metal sheath during manufacture.Pipe-type cablePipe-type cable
Insulated wire core is dragged into a pre-installed pipe (usually a steel pipe) and used to run in pressurized fluid.A type of pressure cable:
461-0704Fluid-filled cable;liquid filled cable (used in North America);oil-filled cableA self-contained pressure cable in which the pressurized fluid is insulating oil and is designed so that the insulating oil can flow freely in the cable461-07-05Fluid-filled pipe-type cable;liquid filled pipe-typecable (used in North America);oil-filled pipe-type cable
Shin Chuan Explanation:
"The original text is multi-conductor cable, according to the actual meaning, it should be "multi-core cable" here. 8
GB/T2900.10--2001
Pipe-type cable with pressurized fluid as insulating oil
461-07-06 Internal gas pressure cable A pressure cable with the pressurized fluid being gas in contact with the insulation. It is a self-contained cable or a pipe cable. 461-07-07 Internal gas pressure cable; gas compression cableThe pressurized fluid is gas. The gas is separated from the insulation by a diaphragm...A type of pressure cable. Usually a type of cable. 2.2.3 Aerial insulated cable
461-08.01
Aerial (insulated) cableAerial (insulated) cableInsulated cable designed for aerial suspension and wide use461-08-02
Hundled aerial cablehundle assembled aerial cable-A group of insulated cores and bare conductors or no bare conductors twisted together to form a rack cable461-08-03 Messenger
Metal wires or ropes mainly used to support overhead cables. It can be separated from the cable it supports or it can be an integral part.
2.2.4 Special cables
461-09-01 Heating cableHeating cableA cable that can dissipate heat for the purpose of heating. It may or may not have a grounding shield or metal sheathNon-heating leadCold lcad; cold tail;non-heating lead461-09-02
Insulated wire or cable that connects the heating core or heating cable to the power supply and is designed to have no obvious heat generation461-09.03
Control cablecontrolcablewww.bzxz.net
Multi-core cable that transmits control, measurement and indication signals in electrical devices.461-09-04
Pilot cablepilot cable
Control cable that is laid in parallel with the power cable and used to transmit the power cable operation signal field461-09-051
Measuring cable;instrument cableMulti-core cable that transmits the sensor output signal to its corresponding measuring instrumentThermocouple extension cablethermocouple extension cable461-09-06
A cable with a conductor of the same material as the thermocouple element, extending to the reference connection point, and having the same thermoelectric properties as the thermocouple in its entire usable temperature range. 461-09-07
Thermocouple compensation cableThermocouple compensation cable is a cable with a conductor made of a different material from the thermocouple, but with errors in its thermoelectric properties within specified limits within a given temperature range.
461-09-08 Ignition cableIgnition cable for ignition systems (automobiles, burners)461-0909
9 Blasting cableBlasting cable
Cable for blasting.
Anti-twist cableanti-twist cable
461-09-10
A cable that minimizes the torque generated by mechanical forces. Note: Twist shortening can be minimized by twisting the helical elements in the cable in reverse. 2.3 Cable accessories
2.3.1 Terminal
46110.01 Termination
A device installed at the end of the cable to ensure electrical connection with other parts of the system and maintain insulation to the connection point. 461-10-02 Sealing terminal sealing end: pothead (not recommended) A terminal that seals the end of the cable to isolate it from the outside world and maintain the pressure of the cable system (if any). 461-10 03 Terminal box
GB/T 2900.10---2001
A box that holds the cable terminal and becomes its component. Note: Terminal boxes can be used both inside and outside. 461-10-04 Dividing box; splitter box A box installed on a multi-core cable to allow each insulated core to be led out like a single-core cable without damaging the insulation of the core. Note: The term "dividing box" is usually used for low-voltage cables, while "splitter box" is used for high-voltage cables.Trifurcating box; trifurcator461-10-05
A branching box installed on a three-core cable.
Separable connectorseparable connector461-10-06
A fully insulated terminal that allows the cable to be connected or disconnected from other equipment.Pot end; stop end; insulating cap461-10-07
An insulating piece that electrically closes the end of a live cable.461-10-08
Slip-on terminationA prefabricated terminal that is put on the end of a prepared cable.461-10-09Shrinkable terminationA prefabricated terminal that shrinks on the end of a prepared cable.Elastomer terminalelastic Termination461-10-10
A prefabricated terminal that is installed on the prepared cable end by its elastic expansion and self-contraction. Taped termination
461-10-11
A terminal in which the insulation, conductor shield and (or) insulated core shield are composed of multiple layers of wrapping tape. Note: For insulation, the wrapping tape should be insulating; for shielding, the wrapping tape should have a certain conductivity. 461-10-12
Cast resin termination A terminal in which the resin mixture is poured into a mold or terminal box as insulation and (or) mechanical protection. 461-10-13 Indoor termination Indoor termination A terminal used in an environment that is neither exposed to direct sunlight nor exposed to the weather. 461-10-14 Outdoor termination termination A terminal used in situations where it is exposed to direct sunlight or weather conditions, or both. 461-10-15
461-10-16
Screened separable connectorScreened separable connectorA separable connector with a completely shielded outer surface. Unscreened separable connectorUnscreened separable connectorA separable connector with no shielding on the outer surface. 461-10-17
Plug-in type separable connectorPlug-in type separable connectorA separable connector with a sliding part making electrical contact. 461-10-18
Bolted-type separable connectorA separable connector with a bolt part making electrical contact. 9Deadbreak connector; de-energized461-10-19
A separable connector that can only connect or disconnect a dead circuit. 461-1020
461-10-21
Loadbreakconnector A separable connector that can connect or disconnect a live circuit. Shrouded termination An indoor terminal with additional insulation at the bushing connection and used in an air-filled terminal box. 2.3.2 Connector
Straight joint
461-11-01
GB/T 2900. 10—2001
An accessory that connects two cables to form a continuous circuit. 461-11-02Trifurcating joint An accessory that connects a three-core cable and three single-core cables. 461-11-03Stop joint
An accessory that connects two cables and uses a pressure-resistant barrier to separate the fluid in one cable from the insulating fluid of the other cable.
461-11-04 Transition joint An accessory that connects two cables with different types of insulation. 461-11-05
Sectionalizing joint
A joint where the metal sheath, grounding shield and insulation shield of a cable are disconnected by an electrician. 461-11-06 T-joint; T joint is a branch joint that connects the trunk cable and the branch cable so that the axes of the two cables are basically at right angles. 461-11-07 Y-joint breeches-joint; Y joint is a branch joint that connects the downline cable and the branch cable so that the axes of the two cables are basically parallel. 461-11-08
3 Insulation piercing connector Insulation piercing connector is a connector that penetrates the insulation of the cable core through metal teeth to make electrical contact with the conductor. Double tap off; double branch joint 461-11-09
Accessory for connecting two branch cables and a trunk cable, in most cases the axes of these cables are substantially parallel. 461-11-10 Joint casing; joint box Prefabricated casing of a joint.
461-11-11 Cast resin joint; potted joint A joint in which a resin mixture is poured into a mold or joint box for insulation and/or mechanical protection. 461-17-12 Injection joint A joint formed by injecting resin into a mold or a wrapped insulating fabric material. 461-11-13 Premoulded joint Premoulded joint designed to be sleeved or shrunk on a cable. 461-11-14 Elastic joint elasticjoint A prefabricated joint installed on two cables to be connected by its elastic expansion and self-contraction. 461-11-15 Taped joint A joint insulated by multiple layers of tape.
461-11-16 Paper-roll type joint A joint insulated by paper (usually pre-impregnated) wrapped around a paper roll. Branch-joint
461-11-17
An accessory that connects a branch cable to a trunk cable. 461-11-18 Radial field joint A joint in which the cores of the entire joint are individually shielded. 461-11-19 Non-radial field joint A joint in which the cores are not individually shielded.
2.3.3 Other accessories
461-12-01 Shielding conductor; return line
shielding conductor
Instructions for use:
1】The original text is "insulation or fluid". According to the actual meaning, it should be "insulating fluid". 1
GB/T2900.102001
A single conductor or single-core cable laid parallel to the cable in the cable line, which itself constitutes the ... part of a closed circuit, and the magnetic field generated by the induced current flowing through it is opposite to the magnetic field generated by the current in the cable 461-12-02 Pressure tank pressure tank; pressure reservoir An oil storage tank used to adapt to the change in oil volume in oil-filled cables. 461:1203 Compensator
compensator
A device used to adapt to the volume expansion of oil or impregnating agent in a sealed terminal. 2.4 Cable installation
2.4.1 Laying method
461-13-01 Triangular arrangement trefoil formation The cables are arranged at equal intervals. From the cross-section, the connecting lines in the center of each cable form an equilateral triangle. When the three cables are in contact with each other, the arrangement is called a "close triangle" arrangement. 461-13-02
Flatformation
Multiple cables are arranged on a plane, and the distance between adjacent cables is usually equal. 461.13-03 [Transposition (of insulated cables)] For power cables
When laying single-core cables, each phase cable occupies various geometric positions of approximately equal line length in the laying shape in turn. b) About grounded shield conductors
When laying a grounded shield conductor along a unit section of an untransposed power cable, in the symmetry plane of the cable laying shape! , the conductor of half the unit length occupies one position, while the conductor of the other half length occupies the symmetrical opposite position. 2.4.2 Metal shield bonding
461-14-01 Solidly bonded single-core cable system A single-core shielded cable system in which the metallic shields of each phase are electrically interconnected and grounded at both ends of the line, and can be grounded at the middle of the line if necessary.
461-14-02 Special bonding of shields A method of bonding and grounding the metallic shields of multiple single-core cables to minimize the longitudinal current in the metallic shields induced by the conductor current.
461-14-03 Insulated shield cable system A cable system in which the metallic shield of each cable is self-insulated throughout its length, except for any necessary grounding or interconnection of the metallic shields.
elementarysection461 14-04
The length between any adjacent sections of the insulated joints, terminals and metal shielding connection points in a cable system: 461-1405
Solid bond
The connection between metal shields with the lowest practical impedance. 461-14-06
461-14-07
Single-point bondingA special bonding method in which the metal shielding layers of three cables on a single section are firmly bonded and grounded at only one point. Cross-bonding
A special bonding method in which the metal shielding layers of adjacent cable sections are cross-connected so that the continuous loop of each metal shielding layer surrounds the phase conductors in turn.
461-14-08Sectionalized cross-bondingA cross-bonding method in which two consecutive sections (called small sections) are used as a unit (called a large section). ": The metal shields are directly interconnected at both ends of the length and can be grounded at these points. The cable is usually transposed at two midpoints of the length. A special type of metal shield. 12
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.