29.240.20 - Power transmission and distribution lines
ICS 29.240.20 Details
Power transmission and distribution lines
Freileitungen
Lignes de transport et de distribution de courant
Daljnovodi
General Information
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1.1 General
(ncpt) FI.1 Application of the standard in Finland
In Finland the standard EN 50341-1 (Part 1) can only be applied using this NNA (EN 50341-2-7) containing National Normative Aspects for Finland.
The requirements of the standard are applied also for low voltage (below 1 kV AC) overhead lines. The requirements of the structural design are applicable also for DC overhead lines, where the electrical requirements are given in the Project Specification.
This standard is applicable for new overhead lines only.
(ncpt) FI.2 Application for existing overhead lines
Overhead lines complying with the mechanical and electrical requirements of its original date of construction can be operated and maintained, if they do not cause obvious danger.
The reparation and overhaul of lines can be done according to the previous requirements. Reparation means that a component which has been damaged is substituted with a similar new one. Overhaul means a wider improvement of the line for extending its lifetime. The basic structure remains same as before.
This standard should be used for all modification works on existing lines. In modification works earlier norms and standards may also be used. In that case it shall especially be verified that changes in actions do not have significant impact on the loads of lines. Modification work means e.g. relocation of some supports or an extension to a line when this supplement has been taken into account in the original design, e.g. addition of a circuit or changing of the conductors to existing supports.
1.2 Field of application
(ncpt) FI.1 Application to covered conductors and aerial cables
The standard includes requirements for the design and construction of overhead lines equipped with covered conductors and aerial cables. Additionally, the requirements of the equipment standards and manufacturers’ instructions shall be followed.
(ncpt) FI.2 Application to cables for telecommunication
The standard includes requirements for the application of telecommunication cables installed on common supports with electrical lines.
(ncpt) FI.3 Installation of other equipment
Only equipment belonging to the line (electric or telecommunication line) can be installed on the overhead lines. However, equipment serving communal services or environmental protection like telecommunication equipment, road signs, warning signs or warning balls may also be installed with the permission of the owner of the line.
Other equipment than those mentioned above can also be installed on supports equipped with aerial cables with the permission of the owner of the line.
If other equipment is installed on the supports, the requirements of safe working practices shall be taken into account. The installation height of equipment meant to be installed and maintained by an ordinary person shall be such that the work can be done without climbing the support and the distances of safe electrical work can be followed (see standard SFS 6002).
The additional loads due to other equipment on the line supports shall be taken into account.
- Standard32 pagesEnglish languagesale 10% offe-Library read for1 day
SE.1 Application to existing overhead lines
This Part 2-18 is applicable for new overhead lines only and not for existing lines.
(A-dev)
SE.2 Maintenance, rebuilding or extension of an overhead line
Measures related to maintenance of the electrical installation shall fulfill the legislation in force when it
was erected. In the case of a rebuilding or extension of an electrical installation (overhead line), the
current regulations in force shall be applied for the rebuilding or extension.
(Regulations and general advice of the National Electrical Safety Board regarding the installation of
electrical installations ”Elsäkerhetsverkets föreskrifter och allmänna råd om hur starkströmsanläggningar
ska vara utförda”, Ikraftträdande och övergångsbestämmelser (ELSÄK-FS 2022:1))
(ncpt)
SE.3 Optical ground wire (OPGW) and optical phase conductor (OPCON)
This Part 2-18 is applicable for installation of OPGW and OPCON, also known as OPPC, in overhead
lines in Sweden.
(ncpt)
SE.4 All dielectric self supporting optical cable (ADSS) and optical attached cable (OPAC)
This Part 2-18 is applicable for installation of ADSS and OPAC in overhead lines in Sweden.
NOTE The allowable electrical field for the ADSS cable should be taken into consideration when the conductor
configuration is determined.
SIST EN 50341-2-18:2023
- Standard92 pagesEnglish languagesale 10% offe-Library read for1 day
1.1 General
(A-dev) AT.1: A new overhead line is defined as the new construction of the totality of all conductors, their supports together with foundations, earthing grid, insulators, accessories and fittings used for the overground transport of electrical energy between two points A and B.
1.2 Field of application
(A-dev) AT.1: Stranded-conductors or cable structures with telecommunications components carried on the line that do not simultaneously function as earth wires or stranded conductors are subject to the provisions of Annex U.
- Standard97 pagesEnglish languagesale 10% offe-Library read for1 day
SI.1 Definition of the new overhead power line
A new overhead power line is defined as a functionally completed installation for the
transmission of electricity between points A and B (i.e. the new construction of all
conductors, their supports together with foundations, earthing system, insulators,
accessories and fittings).
The overhead lines currently being designed (starting of a design to obtain a building
permit) or being under construction may be completed in accordance with the standards
in force at the time of the start of the design or construction of the overhead line.
In the case of maintenance and renovation works with major structural changes to
overhead lines, this standard shall be applied in accordance with the project
specification. E.g., for the construction of new support on new foundations in the existing
overhead line, the provisions of this standard shall be applied to support and foundations
but for the other elements of the overhead line don’t need to be complied with this
standard.
For the design and construction of DC overhead lines, the requirements of this standard
are also applicable to the design of structures, but not for electrical requirements, which
have to be specified in the project specification.
- Standard54 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard – translation60 pagesSlovenian languagesale 10% offe-Library read for1 day
This part of IEC 60383 applies to insulators of ceramic material or glass for use on a.c. overhead power lines and overhead traction lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators for use on d.c. overhead electric traction lines.
This part applies to string insulator units, rigid overhead line insulators and to insulators of similar design when used in substations.
lt does not apply to insulators forming parts of electrical apparatus or to parts used in their construction or to post insulators which are covered by IEC 60168: Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 000 V.
Tests on insulator strings and insulator sets (for example, wet switching impulse voltage) are dealt with in part 2 of IEC 60383.
The object of this part is:
- to define the terms used
- to define insulator characteristics and to prescribe the conditions under which the specified values of these characteristics shall be verified
- to prescribe test methods
- to prescribe acceptance criteria.
This part does not include requirements dealing with the choice of insulators for specific operating conditions.
Specific requirements on the use of coatings on ceramic or glass insulators are described in the informative Annex C.
NOTE A guide for the choice of insulators under polluted conditions has been published, see IEC 60815-1 and -2.
Numerical values for insulator characteristics are specified in IEC 60305, IEC 60433 and IEC 60720.
- Standard66 pagesEnglish languagesale 10% offe-Library read for1 day
1.1 General (ncpt) FI.1 Application of the standard in Finland In Finland the standard EN 50341-1 (Part 1) can only be applied using this NNA (EN 50341-2-7) containing National Normative Aspects for Finland. The requirements of the standard are applied also for low voltage (below 1 kV AC) overhead lines. The requirements of the structural design are applicable also for DC overhead lines, where the electrical requirements are given in the Project Specification. This standard is applicable for new overhead lines only. (ncpt) FI.2 Application for existing overhead lines Overhead lines complying with the mechanical and electrical requirements of its original date of construction can be operated and maintained, if they do not cause obvious danger. The reparation and overhaul of lines can be done according to the previous requirements. Reparation means that a component which has been damaged is substituted with a similar new one. Overhaul means a wider improvement of the line for extending its lifetime. The basic structure remains same as before. This standard should be used for all modification works on existing lines. In modification works earlier norms and standards may also be used. In that case it shall especially be verified that changes in actions do not have significant impact on the loads of lines. Modification work means e.g. relocation of some supports or an extension to a line when this supplement has been taken into account in the original design, e.g. addition of a circuit or changing of the conductors to existing supports. 1.2 Field of application (ncpt) FI.1 Application to covered conductors and aerial cables The standard includes requirements for the design and construction of overhead lines equipped with covered conductors and aerial cables. Additionally, the requirements of the equipment standards and manufacturers’ instructions shall be followed. (ncpt) FI.2 Application to cables for telecommunication The standard includes requirements for the application of telecommunication cables installed on common supports with electrical lines. (ncpt) FI.3 Installation of other equipment Only equipment belonging to the line (electric or telecommunication line) can be installed on the overhead lines. However, equipment serving communal services or environmental protection like telecommunication equipment, road signs, warning signs or warning balls may also be installed with the permission of the owner of the line. Other equipment than those mentioned above can also be installed on supports equipped with aerial cables with the permission of the owner of the line. If other equipment is installed on the supports, the requirements of safe working practices shall be taken into account. The installation height of equipment meant to be installed and maintained by an ordinary person shall be such that the work can be done without climbing the support and the distances of safe electrical work can be followed (see standard SFS 6002). The additional loads due to other equipment on the line supports shall be taken into account.
- Standard32 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 60383 applies to insulators of ceramic material or glass for use on a.c. overhead power lines and overhead traction lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators for use on d.c. overhead electric traction lines. This part applies to string insulator units, rigid overhead line insulators and to insulators of similar design when used in substations. lt does not apply to insulators forming parts of electrical apparatus or to parts used in their construction or to post insulators which are covered by IEC 60168: Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 000 V. Tests on insulator strings and insulator sets (for example, wet switching impulse voltage) are dealt with in part 2 of IEC 60383. The object of this part is: - to define the terms used - to define insulator characteristics and to prescribe the conditions under which the specified values of these characteristics shall be verified - to prescribe test methods - to prescribe acceptance criteria. This part does not include requirements dealing with the choice of insulators for specific operating conditions. Specific requirements on the use of coatings on ceramic or glass insulators are described in the informative Annex C. NOTE A guide for the choice of insulators under polluted conditions has been published, see IEC 60815-1 and -2. Numerical values for insulator characteristics are specified in IEC 60305, IEC 60433 and IEC 60720.
- Standard66 pagesEnglish languagesale 10% offe-Library read for1 day
SI.1 Definition of the new overhead power line
A new overhead power line is defined as a functionally completed installation for the
transmission of electricity between points A and B (i.e. the new construction of all
conductors, their supports together with foundations, earthing system, insulators,
accessories and fittings).
The overhead lines currently being designed (starting of a design to obtain a building
permit) or being under construction may be completed in accordance with the standards
in force at the time of the start of the design or construction of the overhead line.
In the case of maintenance and renovation works with major structural changes to
overhead lines, this standard shall be applied in accordance with the project
specification. E.g., for the construction of new support on new foundations in the existing
overhead line, the provisions of this standard shall be applied to support and foundations
but for the other elements of the overhead line don’t need to be complied with this
standard.
For the design and construction of DC overhead lines, the requirements of this standard
are also applicable to the design of structures, but not for electrical requirements, which
have to be specified in the project specification.
- Standard54 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard – translation60 pagesSlovenian languagesale 10% offe-Library read for1 day
IEC 60383-1:2023 applies to insulators of ceramic material or glass for use on AC overhead power lines and overhead traction lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators for use on DC overhead electric traction lines. This document applies to string insulator units, rigid overhead line insulators and to insulators of similar design when used in substations. lt does not apply to insulators forming parts of electrical apparatus or to parts used in their construction or to post insulators which are covered by IEC 60168, Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 000 V.
The object of this document is:
- to define the terms used
- to define insulator characteristics and to prescribe the conditions under which the specified values of these characteristics shall be verified
- to prescribe test methods
- to prescribe acceptance criteria.
This fifth edition cancels and replaces the fourth edition published in 1993. This edition includes the following significant technical changes with respect to the previous edition:
a) The layout of the document has been changed in order to increase readability;
b) RIV test has been added (Clause 14);
c) Impulse puncture test in air has been added (15.2);
d) Residual strength test has been added (Clause 21);
e) Zinc sleeve test has been added (Clause 28);
f) Impact test has been added (Clause 30);
g) Annex C, coatings on ceramic and glass insulators has been added;
h) Annex D, impact test has been added.
- Standard125 pagesEnglish and French languagesale 15% off
SE.1 Application to existing overhead lines
This Part 2-18 is applicable for new overhead lines only and not for existing lines.
(A-dev)
SE.2 Maintenance, rebuilding or extension of an overhead line
Measures related to maintenance of the electrical installation shall fulfill the legislation in force when it
was erected. In the case of a rebuilding or extension of an electrical installation (overhead line), the
current regulations in force shall be applied for the rebuilding or extension.
(Regulations and general advice of the National Electrical Safety Board regarding the installation of
electrical installations ”Elsäkerhetsverkets föreskrifter och allmänna råd om hur starkströmsanläggningar
ska vara utförda”, Ikraftträdande och övergångsbestämmelser (ELSÄK-FS 2022:1))
(ncpt)
SE.3 Optical ground wire (OPGW) and optical phase conductor (OPCON)
This Part 2-18 is applicable for installation of OPGW and OPCON, also known as OPPC, in overhead
lines in Sweden.
(ncpt)
SE.4 All dielectric self supporting optical cable (ADSS) and optical attached cable (OPAC)
This Part 2-18 is applicable for installation of ADSS and OPAC in overhead lines in Sweden.
NOTE The allowable electrical field for the ADSS cable should be taken into consideration when the conductor
configuration is determined.
SIST EN 50341-2-18:2023
- Standard92 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63248:2022 specifies the properties of wires in the diameter range of, but not limited to, 1,25 mm to 5,50 mm. This document is applicable to coated or cladded metallic wires before stranding used either as concentric lay overhead stranded conductors, or in the manufacture of cores for concentric lay overhead stranded conductors, for power transmission purposes.
The various wire types and their designations are listed in Table A.1. For calculation purposes the values listed in Annex B are used.
This first edition cancels and replaces the first edition of IEC 61232 published in 1993 and the first edition of IEC 60888 published in 1997. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous editions of IEC 61232 and IEC 60888:
a) wire designations have been modified and grouped;
b) wires with zinc coating class 2 were removed;
c) new wire designations have been added;
d) aluminium-clad FeNi36 wires have been added;
e) advanced zinc-aluminium alloy coated steel wires have been added.
- Standard39 pagesEnglish languagesale 10% offe-Library read for1 day
2019-10-31:This prAA represents common mods. to prEN IEC 63248 (PR=70075)
- Amendment9 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the mechanical and electrical properties of round and formed wires for
equivalent diameters up to the values according to Table 3 for aluminium and aluminium alloys
and according to Table 4 for thermal resistant alloys. This document is applicable to aluminium
and aluminium alloy wires for the manufacture of concentric lay overhead electrical stranded
conductors with or without gap(s) for power transmission purposes.
The various materials and their designations are listed in Table 1. For calculation purposes, the
values listed in Table 1 are used.
- Standard19 pagesEnglish languagesale 10% offe-Library read for1 day
2020-10-19: This prAA represents common mods to prEN IEC 62641 (PR=72849)
- Amendment5 pagesEnglish languagesale 10% offe-Library read for1 day
1.1 General (A-dev) AT.1: A new overhead line is defined as the new construction of the totality of all conductors, their supports together with foundations, earthing grid, insulators, accessories and fittings used for the overground transport of electrical energy between two points A and B. 1.2 Field of application (A-dev) AT.1: Stranded-conductors or cable structures with telecommunications components carried on the line that do not simultaneously function as earth wires or stranded conductors are subject to the provisions of Annex U.
- Standard97 pagesEnglish languagesale 10% offe-Library read for1 day
This part of EN 50397 provides general recommendations for the selection, storage, transportation and installation of the covered conductors and the related accessories specified in Parts 1 and 2 of the standard, unless otherwise specified. Safety regulations and environmental regulations as well as rules for installation and mechanical design are not considered in this Guide to use, as they are covered by relevant national regulations and laws. Relevant national regulations are not considered in this guide, but shall always be consulted as appropriate.
NOTE The term "national regulations" is used throughout this guide. It may include specific safety regulations, rules of installation and other relevant instructions which, depending upon the particular country or district, may exist in a legislative (mandatory) form, or as a non-mandatory code of practice. In addition certain specific utilities may have their own safety practices.
It is assumed that the design of installations, the purchase and installation of covered conductors and of the related accessories specified in this EN is entrusted to suitably skilled and competent people. In case of doubt as to the suitability of covered conductors and the related accessories for a particular use, further specific information shall be obtained from the manufacturer.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
This Part 2 of EN 50397 contains the requirements for accessories that are for use with the covered conductors in accordance with EN 50397 1. They are for applications in overhead lines with rated voltages U above 1 kV a.c. and not exceeding 36 kV a.c.
NOTE This document describes the requirements and tests only for the accessories installed on the covered conductor itself.
- Standard42 pagesEnglish languagesale 10% offe-Library read for1 day
This part of EN 50397 provides general recommendations for the selection, storage, transportation and installation of the covered conductors and the related accessories specified in EN 50397 1 and EN 50397 2, unless otherwise specified. Safety regulations and environmental regulations as well as rules for installation and mechanical design are not considered in this Guide to use, as they are covered by relevant national regulations and laws. Relevant national regulations are not considered in this guide, but it is advised that they are always consulted as appropriate. NOTE The term 'national regulations' is used throughout this guide. It can include specific safety regulations, rules of installation and other relevant instructions which, depending upon the particular country or district, can exist in a legislative (mandatory) form, or as a non-mandatory code of practice. In addition, certain specific utilities can have their own safety practices. It is assumed that the design of installations, the purchase and installation of covered conductors and of the related accessories specified in this document are entrusted to suitably skilled and competent people. In case of doubt as to the suitability of covered conductors and the related accessories for a particular use, further specific information is expected to be obtained from the manufacturer.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
This document contains the requirements for accessories that are for use with covered conductors, see EN 50397 1. They are for applications in overhead lines with rated voltages U above 1 kV a.c. and not exceeding 36 kV a.c. NOTE This document describes the requirements and tests only for the accessories installed on the covered conductor itself.
- Standard42 pagesEnglish languagesale 10% offe-Library read for1 day
IEC TR 62681:2022 is available as IEC TR 62681:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC TR 62681:2022 provides general guidance on the electromagnetic environment issues of HVDC overhead transmission lines. It concerns the major parameters adopted to describe the electromagnetic properties of an HVDC overhead transmission line, including electric fields, ion current, magnetic fields, radio interference, and audible noise generated as a consequence of such effects. If the evaluation method and/or criteria of electromagnetic properties are not yet regulated, engineers in different countries can refer to this document to:
- support/guide the electromagnetic design of HVDC overhead transmission lines,
- limit the influence on the environment within acceptable ranges, and
- optimize engineering costs.
- Technical report98 pagesEnglish languagesale 15% off
- Technical report203 pagesEnglish languagesale 15% off
2019-09-17: No XML available because of the template of the NNA
2021: CLC legacy converted by DCLab NISOSTS
- Standard63 pagesEnglish languagesale 10% offe-Library read for1 day
2020-10-19: This prAA represents common mods to prEN IEC 62641 (PR=72849)
- Amendment5 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 62641:2022 specifies the mechanical and electrical properties of round and formed wires for equivalent diameters up to the values according to Table 3 for aluminium and aluminium alloys and according to Table 4 for thermal resistant alloys. This document is applicable to aluminium and aluminium alloy wires for the manufacture of concentric lay overhead electrical stranded conductors with or without gap(s) for power transmission purposes. The various materials and their designations are listed in Table 1. For calculation purposes, the values listed in Table 1 are used. This first edition cancels and replaces the second edition of IEC 60104 published in 1987, the first edition of IEC 60121 published in 1960, the first edition of IEC 60889 published in 1987, and the first edition of IEC 62004 published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions of IEC 60104, IEC 60121, IEC 60889 and IEC 62004:
designations of aluminium alloys are modified;
aluminium alloys A4, AL4 and AL5 are added;
wire diameter ranges for indicating mechanical properties are modified and extended;
test methods are merged.
- Standard19 pagesEnglish languagesale 10% offe-Library read for1 day
2019-10-31:This prAA represents common mods. to prEN IEC 63248 (PR=70075)
- Amendment9 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63248:2022 specifies the properties of wires in the diameter range of, but not limited to, 1,25 mm to 5,50 mm. This document is applicable to coated or cladded metallic wires before stranding used either as concentric lay overhead stranded conductors, or in the manufacture of cores for concentric lay overhead stranded conductors, for power transmission purposes. The various wire types and their designations are listed in Table A.1. For calculation purposes the values listed in Annex B are used. This first edition cancels and replaces the first edition of IEC 61232 published in 1993 and the first edition of IEC 60888 published in 1997. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions of IEC 61232 and IEC 60888: a) wire designations have been modified and grouped; b) wires with zinc coating class 2 were removed; c) new wire designations have been added; d) aluminium-clad FeNi36 wires have been added; e) advanced zinc-aluminium alloy coated steel wires have been added.
- Standard39 pagesEnglish languagesale 10% offe-Library read for1 day
This part of IEC 61952 is applicable to composite line post insulators for AC overhead lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to line post insulators of similar design used in substations or on electric traction lines. This document applies to line post insulators of composite type, generally with metallic couplings, with and without a base plate. It also applies to such insulators when used in complex structures. It does not apply to hollow insulators adapted for use as line post insulators. The object of this document is to specify the main dimensions of the couplings to be used on the composite line post insulators in order to permit the assembly of insulators or fittings supplied by different manufacturers and to allow, whenever practical, interchangeability with existing installations. It also specifies a standard designation system for composite line post insulators.
- Standard35 pagesEnglish languagesale 10% offe-Library read for1 day
1.1 General
(ncpt) PL.1 Scope of application
This NNA applies to designing and constructing of new overhead lines with nominal system voltages exceeding 1 kV AC.
"New overhead line" means a totally new line between two points, A and B, built up with new components.
The standard PN-EN 50341-1 (Part 1) with this NNA does not apply to modernisation, reconstruction and renovation of the existing lines, unless otherwise specified in the Project Specification.
1.2 Field of application
(ncpt) PL.1 All Dielectric Self Supporting (ADSS) cables
This NNA applies to All Dielectric Self Supporting (ADSS) cables only within the scope of their impact on the supports and minimum clearances which shall be taken as for insulated cable systems.
(ncpt) PL.2 Telecommunication equipment
This NNA relates to the telecommunication equipment mounted on the new overhead line supports.
- Standard58 pagesEnglish languagesale 10% offe-Library read for1 day
1.1 General 1.1 DE.1 General (ncpt) (Supplement to DIN EN 50341-1 (VDE 0210-1):2013-11, clause 1.1) This EN applies to planning and installation of overhead lines with nominal voltages above AC 1 kV. This EN needs not to be adopted to existing installations. Installations in the planning and construction stage may be completed adopting the standard edition valid at the beginning of planning. 1.2 Field of application 1.2 DE.1 Application to conductors with components for telecommunication (ncpt) (Supplement to DIN EN 50341-1 (VDE 0210-1):2013-11, 1.2) In Germany this EN is applicable to all types of conductors (according to the information in clause 1.2) which contain components for telecommunication. 1.2 DE.2 Application to installation of telecommunication equipment on supports (ncpt) (Supplement to DIN EN 50341-1 (VDE 0210-1):2013-11, 1.2) In Germany this EN is applicable to the installation of telecommunication equipmen
- Standard91 pagesEnglish languagesale 10% offe-Library read for1 day
1 Scope 1.1 General BE.1 Scope of Part 1 and Part 2-2 (ncpt) Part 1 and the present Part 2-2 are only applicable to completely new or completely replaced overhead lines between two points, A and B, as well as to new supports on new foundations with nominal voltages above AC 50 kV. (A-dev) Overhead lines or supports with nominal voltages exceeding AC 1 kV up to and including AC 50 kV are treated as a high voltage of the first category in the General Regulations of the Electrical Installations (GREI) and follow completely the GREI for their dimensioning. 1.2 Field of application (ncpt) BE.1 Application to telecommunication equipment Part 1 and this NNA apply to telecommunication equipment mounted on the new supports (e.g. dishes, antennas), particularly with respect to wind assumptions.
- Standard29 pagesEnglish languagesale 10% offe-Library read for1 day
This International Standard applies to composite line post insulators consisting of a loadbearing cylindrical insulating solid core consisting of fibres - usually glass - in a resin-based matrix, a housing (outside the insulating core) made of polymeric material and end fittings permanently attached to the insulating core. Composite line post insulators covered by this standard are subjected to cantilever, tensile and compressive loads, when supporting the line conductors. They are intended for use on a.c. overhead lines with a rated voltage greater than 1 000 V and a frequency not greater than 100 Hz. The object of this standard is - to define the terms used, - to prescribe test methods, - to prescribe acceptance or failure criteria. This standard does not include requirements dealing with the choice of insulators for specific operating conditions.
- Standard30 pagesEnglish languagesale 10% offe-Library read for1 day
1.1 General (ncpt) PL.1 Scope of application This NNA applies to designing and constructing of new overhead lines with nominal system voltages exceeding 1 kV AC. "New overhead line" means a totally new line between two points, A and B, built up with new components. The standard PN-EN 50341-1 (Part 1) with this NNA does not apply to modernisation, reconstruction and renovation of the existing lines, unless otherwise specified in the Project Specification. 1.2 Field of application (ncpt) PL.1 All Dielectric Self Supporting (ADSS) cables This NNA applies to All Dielectric Self Supporting (ADSS) cables only within the scope of their impact on the supports and minimum clearances which shall be taken as for insulated cable systems. (ncpt) PL.2 Telecommunication equipment This NNA relates to the telecommunication equipment mounted on the new overhead line supports.
- Standard58 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 62641:2022 specifies the mechanical and electrical properties of round and formed wires for equivalent diameters up to the values according to Table 3 for aluminium and aluminium alloys and according to Table 4 for thermal resistant alloys. This document is applicable to aluminium and aluminium alloy wires for the manufacture of concentric lay overhead electrical stranded conductors with or without gap(s) for power transmission purposes.
The various materials and their designations are listed in Table 1. For calculation purposes, the values listed in Table 1 are used.
This first edition cancels and replaces the second edition of IEC 60104 published in 1987, the first edition of IEC 60121 published in 1960, the first edition of IEC 60889 published in 1987, and the first edition of IEC 62004 published in 2007. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous editions of IEC 60104, IEC 60121, IEC 60889 and IEC 62004:
designations of aluminium alloys are modified;
aluminium alloys A4, AL4 and AL5 are added;
wire diameter ranges for indicating mechanical properties are modified and extended;
test methods are merged.
- Standard34 pagesEnglish and French languagesale 15% off
IEC 63248:2022 specifies the properties of wires in the diameter range of, but not limited to, 1,25 mm to 5,50 mm. This document is applicable to coated or cladded metallic wires before stranding used either as concentric lay overhead stranded conductors, or in the manufacture of cores for concentric lay overhead stranded conductors, for power transmission purposes.
The various wire types and their designations are listed in Table A.1. For calculation purposes the values listed in Annex B are used.
This first edition cancels and replaces the first edition of IEC 61232 published in 1993 and the first edition of IEC 60888 published in 1997. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous editions of IEC 61232 and IEC 60888:
a) wire designations have been modified and grouped;
b) wires with zinc coating class 2 were removed;
c) new wire designations have been added;
d) aluminium-clad FeNi36 wires have been added;
e) advanced zinc-aluminium alloy coated steel wires have been added.
- Standard75 pagesEnglish and French languagesale 15% off
1.1 General 1.1 IS.1 Application to new lines (snc) This Part 2-12 is only applicable to new overhead transmission lines exceeding 1 kV (AC). If deviations and/or extensions to existing transmission lines are planned, the Icelandic NC shall be informed and will decide case by case whether ÍST EN 50341 is applicable or not.
- Standard25 pagesEnglish languagesale 10% offe-Library read for1 day
General (snc) EE.1 Application to new lines In Estonia the standard EN 50341-1 (Part 1) can only be applied using this NNA (EN 50341-2-20) containing National Normative Aspects for Estonia. This Part 2-20 applies to all new overhead electric lines with nominal system voltages exceeding AC 1 kV and also for low voltage (below 1 kV AC) overhead lines performed by aerial cables. The requirements of the structural design are applicable also for DC overhead lines, where the electrical requirements are given in the Project Specification. (ncpt) EE.2 “New overhead line” A “new overhead line” means a completely new line between two points, A and B. A new branch line of the existing power line should be considered as a new power line including the junction support. Specific requirements for junction support should be defined with the Project Specification. 1.2 Field of application (ncpt) EE.1 Application to covered conductors and aerial cables The standard includes requirements for the design and construction of overhead lines with nominal system voltages up to 45 kV AC equipped with covered conductors and aerial cables. Additionally, the requirements of the equipment standards and manufacturers’ instructions shall be followed. (A-dev) EE.2 Application to mounting of telecommunication equipment The Standard EVS-EN 50341:2013 is applicable to fixing of structural elements for tele-communication (antennas, All Dielectric Self Supporting (ADSS) equipment, junction boxes, etc.), if mounted on power line supports (towers), especially regarding wind forces and ice loads on such fixed elements. The design and installation should be done under the due control of the line owner and/or the competent authority. Mounting of telecommunication equipment on power line supports must be coordinated with the line owner and stated in the Project Specification. This standard applies to telecommunication lines only in the case of their common installation with power lines. This standard does not apply to separately installed telecommunication overhead lines. If telecommunication equipment (antennas, dishes, etc.) will be installed in the transmission line supports, and their size, location or mounting may have major effects on the loads or design of the structures, the requirements of EVS-EN 1993-3-1/NA:2009 shall also to be taken into account. If such structures include conductive parts, the requirements on clearances in subclause 5.8 should be applied. (ncpt) EE.3 Application to installation of other equipment Only equipment belonging to the line (electric or telecommunication line) can be installed on the overhead lines. However, with the permission of the owner of the line, equipment serving communal services or environmental protection like road signs, warning signs or warning balls, etc., may also be installed. The installation height of equipment meant to be installed and maintained by an instructed person shall be such that the work can be done without climbing the support and the distances of safe electrical work can be followed. The additional loads due to this equipment on the line supports shall be taken into account if necessary.
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1.1 General 1.1 RO.1 General (ncpt) This Part 2-24 gives the requirements for planning, design and construction of overhead electrical lines with nominal voltages exceeding A.C. 1 kV operating at 50 Hz frequency. The present Part 2-24 is not applicable for existing overhead electrical lines unless specifically required by Project Specification. The power installations of overhead lines, that are in different stages of design or construction, can be finalised in conformity with the standards in force at project beginning. For the application of this standard for specific requirements relaring to modernization, increasing safety and transport capacity of existing overhead lines, reference shall be specified in the Project Specification. At the same time, the correlation between relevant regulations and associated standards shall be established in the Project Specifications. The extension of existing electrical lines is considered as new overhead lines, except the junction points that shall be detailed in the Project Specifications. 1.2 Field of application 1.2 RO.1 Overhead electrical lines with insulated conductors (ncpt) This Part 2-24 is applicable for the design and construction of overhead electrical lines with insulated conductors where the internal and external clearances can be smaller than those specified in Part 1 (SR EN 50341-1:2013).
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This document specifies the methods and procedures of testing supports for overhead lines.
It applies to the testing of supports and structures of overhead lines.
There is no restriction on the type of material used in the fabrication of the supports which may
include, but not be limited to, metallic alloys, concrete, timber, laminated wood and composite
materials. If required by the client, this document can also be applied to the testing of
telecommunication supports, railway/tramway overhead electrification supports, electrical
substation gantries, street lighting columns, wind turbine towers, ski-lift supports, etc.
Tests on reduced scale models of supports are not covered by this document.
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IEC TS 63042-202:2021(E) provides common rules for the design of overhead transmission lines with the highest voltages of AC transmission systems exceeding 800 kV, so as to provide safety and proper functioning for the intended use.
This technical specification aims to give the main principles for the design of UHV AC overhead transmission lines, mainly including selection of clearance, insulation coordination and insulator strings design, bundle-conductor selection, earth wire/optical ground wires selection, tower and foundation design, environmental consideration. The design criteria apply to new construction, reconstruction and expansion of UHV AC overhead transmission line.
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This International Standard applies to string insulator units of the cap and pin type with
insulating parts of ceramic material or glass, intended for AC overhead lines with a nominal
voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to
insulators of similar design used in substations.
This document applies to string insulator units of the cap and pin type either with ball and
socket couplings or with clevis and tongue couplings.
This document applies to string insulator units for use on overhead lines in clean areas and
polluted areas. For use in areas characterized by very heavy pollution levels and for other
particular or extreme environmental conditions, it may be necessary for certain dimensions to
be changed and insulator units having different creepage distances, spacing and forms may
be preferred (for example, flat profile, hemispherical etc.). Insulators for use on DC systems
may also need different dimensions. In any case, it is applicable that the standardized
mechanical characteristics of this document and coupling sizes are retained.
The object of this document is to prescribe specified values for the mechanical characteristics
and for the main dimensions of string insulator units of the cap and pin type.
The power frequency, lightning impulse and puncture withstand voltages of string insulator
units are not specified in this document. IEC 60383-1 gives the electrical characteristics which
define string insulator units; their values are agreed between purchaser and manufacturer.
Ball and socket couplings are covered by IEC 60120, clevis and tongue couplings by
IEC 60471.
NOTE For the definition of site pollution severity see IEC TS 60815-1.
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This International Standard is applicable to string insulator units of the long rod type with
insulating parts of ceramic material intended for use in AC overhead power lines with a
nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It is also
applicable to insulators of similar design, used in substations.
This document is applicable to ceramic string insulator units of the long rod type, either with a
clevis end fitting at both ends for coupling with a tongue, or with a socket end fitting at both
ends for coupling with a pin ball.
The object of this document is to prescribe specified values for electrical and mechanical
characteristics, and for the principal dimensions of ceramic string insulator units of the long
rod type.
This document is applicable to string insulator units for use on overhead lines situated in
lightly polluted areas, and the creepage distances given in Table 1 have been established
accordingly, using the IEC TS 60815-2 recommendation of 27,8 mm/kV for SPS class.
However, shorter creepage distances are applicable for use in some non-polluted areas. If
specific operating conditions require or allow non-standard (longer or shorter) creepage
distances, the mechanical characteristics as well as the lengths L (see Clause 4) of this
document are intended to be used unless the need for exceptionally long creepage distances
requires values of L greater than those given in Table 1. In the case of special requirements,
e.g. very heavy polluted areas and for other particular or extreme environmental conditions, it
may be necessary for certain dimensions to be changed.
As far as reasonably applicable, this document is also applicable to be applied to similar
insulator units outside the scope of this standard, such as insulators for electric traction lines.
This document does not include tests on insulators and dimensions of end fittings.
Ball and socket couplings are covered by IEC 60120, clevis and tongue couplings by
IEC 60471.
NOTE 1 For the definition of site pollution severity, see applicable part of IEC TS 60815.
NOTE 2 The term "ceramic" is used in this document to refer to porcelain materials and, contrary to North
American practice, does not include glass.
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IEC 60652:2021 is available as IEC 60652:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60652:2021 specifies the methods and procedures of testing supports for overhead lines. It applies to the testing of supports and structures of overhead lines. There is no restriction on the type of material used in the fabrication of the supports which may include, but not be limited to, metallic alloys, concrete, timber, laminated wood and composite materials. If required by the client, this document can also be applied to the testing of telecommunication supports, railway/tramway overhead electrification supports, electrical substation gantries, street lighting columns, wind turbine towers, ski-lift supports, etc. Tests on reduced scale models of supports are not covered by this document. This third edition cancels and replaces the second edition published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Title modified; b) Added reference to CIGRE Brochure 399; c) In Clause 7, added test limitation for wind speed and direction during testing; d) In paragraph 10.5, added load increments for destruction tests; e) In paragraph 10.7, added a requirement for an agreement between client and testing station when testing supports made of creep-sensitive materials; f) In Clause 17, added requirements for sampling procedure to be provided in the test report.
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This document defines methods to assess defects and to verify that products after the manufacturer process meet the requirements of the corresponding product standard. The principles of assessment of defects for live working products are detailed in this document to assist product standard developers in prescribing the best means to achieve suitable quality of every finished tool, device and piece of equipment. The following elements are not covered by the present document, but are included in each product standard: - type tests; - provisions and description for routine, sampling and acceptance tests; - identification and classification of defects; - risk analysis. This document does not cover conformity assessment of commercial shipments or certifications.
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IEC 62271-215:2021 is applicable to phase comparators designed to be plugged into the testing points of a voltage detecting and indicating system (VDIS) according to IEC 62271-213, to give an indication of the result of a phase comparison. The main usage is to provide a clear evidence of the phase relationship between two energized parts of a high-voltage network, at the same nominal voltage and frequency before coupling them. This first edition cancels and replaces the first edition of IEC 61243-5 published in 1997 and the first edition of IEC 62271-206 published in 2011. This edition constitutes a merging of the content of IEC 61243-5 and IEC 62271-206. This edition includes the following significant technical changes with respect to the previous editions of IEC 61243-5 and IEC 62271-206:
the document does not include the specific phase comparators (SPCs) as defined in IEC 61243-5, which was specific to manufacturers, and takes back the technical principles of the universal phase comparator (UPC) for VDIS of all manufacturers;
the phase comparator for sequential connected operation is introduced to facilitate the operation of phase comparation of large MV panels.
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IEC 62271-213:2021 is applicable to the voltage detecting and indicating system (VDIS) to be installed on indoor and outdoor high-voltage equipment. The VDIS as defined by this document includes a coupling system per phase (capacitive, resistive coupling or other technology) to connect to live parts (main circuit). This first edition cancels and replaces the first edition of IEC 61243-5 published in1997 and the first edition of IEC 62271-206 published in 2011. This edition constitutes a merging of the content of IEC 61243-5 and IEC 62271-206. This edition includes the following significant technical changes with respect to the previous editions of IEC 61243-5 and IEC 62271-206: a) an optional output signal is defined to be used for multipurpose use cases; b) only one interface is defined for voltage detecting and indicating system (VDIS); c) the measurement of the current carrying capacity of the voltage limiting element is considered as inaccurate and is not considered in this document. The experience shows that a probability of the failure of the coupling element is negligible.
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IEC 60652:2021 is available as IEC 60652:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60652:2021 specifies the methods and procedures of testing supports for overhead lines. It applies to the testing of supports and structures of overhead lines. There is no restriction on the type of material used in the fabrication of the supports which may include, but not be limited to, metallic alloys, concrete, timber, laminated wood and composite materials. If required by the client, this document can also be applied to the testing of telecommunication supports, railway/tramway overhead electrification supports, electrical substation gantries, street lighting columns, wind turbine towers, ski-lift supports, etc. Tests on reduced scale models of supports are not covered by this document. This third edition cancels and replaces the second edition published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Title modified;
b) Added reference to CIGRE Brochure 399;
c) In Clause 7, added test limitation for wind speed and direction during testing;
d) In paragraph 10.5, added load increments for destruction tests;
e) In paragraph 10.7, added a requirement for an agreement between client and testing station when testing supports made of creep-sensitive materials;
f) In Clause 17, added requirements for sampling procedure to be provided in the test report.
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NEW!IEC 60900:2018 is available as IEC 60900:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60900:2018 is applicable to insulated, insulating and hybrid hand tools used for working live or close to live parts at nominal voltages up to 1 000 V AC and 1 500 V DC. The products designed and manufactured according to this document contribute to the safety of the users provided they are used by skilled persons, in accordance with safe methods of work and the instructions for use (where appropriate). This document has been prepared in accordance with the requirements of IEC 61477 where applicable. The products covered by this document may have an impact on the environment during some or all stages of its life cycle. These impacts can range from slight to significant, be of short term or long-term duration, and occur at the global, regional or local level. This document does not include requirements and test provisions for the manufacturers of the products, or recommendations to the users of the products for environmental improvement. This fourth edition cancels and replaces the third edition, published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of a third category of tools has been added, namely hybrid hand tools; b) introduction of a new informative Annex A on examples of insulated, insulating and hybrid hand tools. Key words: Live Working, Insulated, Insulating, Hand Tools
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IEC 61318:2021 This document defines methods to assess defects and to verify that products after the manufacturer process meet the requirements of the corresponding product standard.
The principles of assessment of defects for live working products are detailed in this document to assist product standard developers in prescribing the best means to achieve suitable quality of every finished tool, device and piece of equipment.
The following elements are not covered by the present document, but are included in each product standard:
– type tests;
– provisions and description for routine, sampling and acceptance tests;
– identification and classification of defects;
– risk analysis.
This document does not cover conformity assessment of commercial shipments or certifications.
This fourth edition cancels and replaces the third edition published in 2007. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) change of the purpose of the document from a prescriptive testing standard to a standard assisting the project team in the conformance to respective product standard.
b) introduction of conformance test, record of process, quality control documentation, adapted to the standard product.
c) change of prescribed sampling procedure to adapted sampling tests to the product standard.
d) suppression of the term “conformity assessment”.
e) Introduction of the term “verification method” replacing “conformity assessment application”.
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IEC 62271-215:2021 is applicable to phase comparators designed to be plugged into the testing points of a voltage detecting and indicating system (VDIS) according to IEC 62271-213, to give an indication of the result of a phase comparison.
The main usage is to provide a clear evidence of the phase relationship between two energized parts of a high-voltage network, at the same nominal voltage and frequency before coupling them.
This first edition cancels and replaces the first edition of IEC 61243-5 published in 1997 and the first edition of IEC 62271-206 published in 2011. This edition constitutes a merging of the content of IEC 61243-5 and IEC 62271-206.
This edition includes the following significant technical changes with respect to the previous editions of IEC 61243-5 and IEC 62271-206:
the document does not include the specific phase comparators (SPCs) as defined in IEC 61243-5, which was specific to manufacturers, and takes back the technical principles of the universal phase comparator (UPC) for VDIS of all manufacturers;
the phase comparator for sequential connected operation is introduced to facilitate the operation of phase comparation of large MV panels.
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IEC 61597:2021(E) which is a Technical Report provides information with regard to conductors specified in IEC 61089 and other aluminium and aluminium steel conductors. Such information includes properties of conductors and useful methods of calculation. The following chapters are included in this document.
– current carrying capacity of conductors: Calculation method and typical example
– alternating current resistance, inductive and capacitive reactances
– elongation of conductors: Thermal and stress-strain data
– conductor creep
– loss of strength of aluminium wires due to high temperatures
It is noted that this document does not discuss all theories and available methods for calculating conductor properties, but provides users with simple methods that provide acceptable accuracies.
This second edition cancels and replaces the first edition published in 1995. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Addition of Clause 2 and Clause 3 since the “Normative references” and “Terms and definitions” clauses are mandatory elements of the text according to the new IEC template.
b) In Clause 6, addition of new kinds of aluminium alloy and aluminium clad steel and their values of temperature coefficients of resistance.
c) In Clause 6, addition of guidelines for the calculation of AC resistance taken into account hysteresis and eddy current losses.
d) In Clause 7, addition of the values of coefficient of linear expansion of aluminium alloy conductor aluminium-clad steel reinforced series.
e) Deletion of Clause 8 “Calculation of maximum conductor length on drums” in the last version.
f) Annex A, replaced by “A practical example of CCC calculation”.
g) Annex B, replaced by “Indicative conditions for CCC calculation”.
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