IZL - Insulators

This international standard applies to string insulator units of the cap and pin type and also of
the long rod type as well as the fittings used with such insulators.
The object of this document is to define the dimensions of a series of clevis and tongue
couplings to permit the assembly of insulators or fittings supplied by different manufacturers.
NOTE 1 IEC 60305 gives the coordination between the standardized dimensions of Table 1 and the strength
classes of cap and pin insulator. IEC 60433 gives the coordination between the standardized dimensions of Table 2
and the strength classes of long rod insulators.
NOTE 2 If the dimensions given in Table 1 are not sufficient, higher strength classes are given in IEC 60305.

This international standard is applicable to locking devices used with ball and socket
couplings of string insulator units and used with the corresponding metal fittings standardized
in IEC 60120, when they are supplied separately.
When these locking devices are supplied with an insulator or fitting, they are considered as an
integral part of it. In this case, the relevant test is to be included with those of insulators, as
specified in IEC 60383-1 and IEC 61325. On request, a certificate is to be delivered
confirming that the tests on locking devices as specified in this document have been carried
out. The locking devices are usually supplied with the insulator or corresponding metal fittings.
The object of this document is
• to define the shapes and some standard dimensions for locking devices,
• to define the test methods for locking devices,
• to state the acceptance conditions for supply,
• to give other dimensions for guidance of manufacturing only.
The object of this document does not include the specification of the nature of the material,
and the material covered by the scope of this document does not have a surface coating for
corrosion protection. However, the material which will give rise to significant contact
corrosion(chemical reaction) between the locking device and the ball and socket coupling
does not covered by this document.

The object of this international standard is to define the dimensions of a series of standard
ball and socket couplings using the standard locking devices (see IEC 60372) in order to
permit the assembly of insulators or metal fittings supplied by different manufacturers.
This document applies to string insulator units of the cap and pin and long rod types and their
associated metal fittings.
For the pin ball and the socket, dimensions apply to the finished product after any surface
treatment.
Extreme positions of the pin ball in the socket are given in Annex A.
Typical examples of gauges for checking the dimensions of pin balls and sockets are given in
Annex B.
NOTE Only the dimensions necessary for assembly are dealt with in this standard. Properties of material and
working loads are not specified. The co-ordination of dimensions with strength classes is specified in IEC 60305
and IEC 60433.

This document 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.

This document is applicable to plug-in type bushings, according to EN 60137, 72,5 kV, rated currents
from 630 A up to 1 250 A and frequencies from 15 Hz up to 60 Hz for single or three-phase arrangements in electrical equipment like liquid filled transformers or gas insulated switchgear and controlgear. It complements and amends, if necessary, the relevant EN standards.
The application of such plug-in type bushings is derived from EN 50180 and EN 50181 but applied for higher voltages with described deviations to EN 50299-2 and EN 62271-209.
This standard does not cover the connection assembly as described in EN 50299-2 and EN 62271-209.
EN 60137 and HD 632 series outline the qualification, type test, routine and sample test of plug-in type bushings according to this standard.
This document establishes essential dimensions and testing procedures, to ensure adequate mounting and interchangeability of mating plug-in separable connectors of equivalent ratings.

CCMC - wrong standard reference to be corrected

IEC - Corrected version

This International Standard applies to outdoor and indoor bushings of any voltage used on DC
systems, of capacitance graded or gas insulated types for use as components of oil-filled
converter transformers and smoothing reactors, as well as air-to-air DC bushings. This
standard does not apply to the following:
• cable terminations (potheads);
• bushings for instrument transformers;
• bushings for test power supplies;
• bushings applied with gaseous insulation (other than air at atmospheric pressure) external
to the bushing;
• bushings for industrial application;
• bushings for traction application;
• bushings for distribution class transformers.
This standard makes reference to IEC 60137 for general terms and conditions and defines the
special terms used, operating conditions, ratings, test procedures as well as general
mechanical and electrical requirements for bushings for DC application.

IEC - Corrected version

This International Standard specifies the characteristics and tests for insulated bushings.
This standard is applicable to bushings, as defined in Clause 3, intended for use in electrical
apparatus, machinery, transformers, switchgear and installations for three-phase alternating
current systems, having highest voltage for equipment above 1 000 V and power frequencies
of 15 Hz up to and including 60 Hz.
Subject to special agreement between purchaser and supplier, this standard may be applied,
in part or as a whole, to the following:
• bushings used in other than three-phase systems;
• bushings for high-voltage direct current systems;
• bushings for testing transformers;
• bushings for capacitors.
Special requirements and tests for transformer bushings in this standard apply also to reactor
bushings.
This standard is applicable to bushings made and sold separately. Bushings which are a part
of an apparatus and which cannot be tested according to this standard should be tested with
the apparatus of which they form part.

Integrate the not accepted changes of the work of WG1 proposed in the meeting on 23th October 2014 in EN50180-3

This International Standard applies to composite hollow core station post insulators consisting
of a load-bearing insulating tube (core) made of resin impregnated fibres an insulating filler
material (e.g. solid, liquid, foam, gaseous – pressurized or unpressurized), a housing (outside
the insulating tube) made of polymeric material (for example silicone or ethylene-propylene)
and metal fixing devices at the ends of the insulating tube. Composite hollow core station post
insulators as defined in this standard are intended for general use in substations in both,
outdoor and indoor environments, operating with a rated AC voltage greater than 1 000 V and
a frequency not greater than 100 Hz or for use in direct current systems with a rated voltage
greater than 1 500 V.
The object of this standard is:
– to define the terms used;
– to prescribe test methods;
– to prescribe acceptance criteria.
All the tests in this standard, apart from the thermal-mechanical test, are performed at normal
ambient temperature. This standard does not prescribe tests that may be characteristic of the
apparatus of which the composite hollow core station post insulator ultimately may form a
part. Further technical input is required in this area.
NOTE 1 "Pressurized" means a permanent gas or liquid pressure greater than 0,05 MPa (0,5 bar) gauge. The gas
can be dry air or inert gases, for example sulphur hexafluoride, nitrogen, or a mixture of such gases.
NOTE 2 "Unpressurized" means a gas or liquid pressure smaller than or equal to 0,05 MPa (0,5 bar) gauge.

Prescribes specified values for the mechanical characteristics of the composite string insulator units. Defines the main dimensions of the couplings to be used on the composite string insulator units in order to permit the assembly of insulators of fittings supplied by different manufacturers and to allow, whenever practical, interchangeability with existing installations. It also defines a standard designation system for composite string insulator units.

This part of IEC 62231 is applicable to composite station post insulators for substations with
a.c. voltages greater than 1 000 V up to 245 kV.
It also applies to composite station post insulators of similar design used in power stations of
railway systems.
This part of IEC 62231 specifies main dimensions and values for mechanical and electrical
characteristics of composite station post insulators.
NOTE The composite station post insulators covered by this standard are primarily intended for outdoor service,
but can also be used indoor.

This European Standard should be considered in factual context with EN 50180-1 only. Constructional details
for fastenings and their details are supplementing EN 50180-1. This information is of importance for utilities
concerning compatibility.
For a better understanding of additional information some dimension from EN 50180-1 are repeated in this
European Standard.
This European Standard was extended for fastenings of bushings for a highest voltage of 52 kV.

This European Standard should be considered in factual context with EN 50180-1 only. The dimensional
supplements are related to figures and tables of EN 50180-1. To enable a better understanding of additional
information some tables from EN 50180-1 are used and extended.
This European Standard may now be used also for bushings with a highest voltage of 52 kV. Figures for the
details of the components and the related tables are added according to the extended range of voltage.

This European Standard is applicable to ceramic and resin insulated bushings having highest voltages above 1 kV up to 52 kV, rated currents from 250 A up to 3 150 A and frequencies from 15 Hz up to 60 Hz for insulating liquid filled transformers.
This European Standard establishes essential dimensions, to ensure interchangeability of bushings and to ensure adequate mounting and interchangeability of mating plug-in separable connectors of equivalent ratings.

EN IEC 60507 is applicable for the determination of the power frequency withstand characteristics of ceramic and glass insulators to be used outdoors and exposed to polluted atmospheres, on a.c. systems with the highest voltage of the system greater than 1 000 V. These tests are not directly applicable to polymeric insulators, to greased insulators or to special types of insulators (insulators with semiconducting glaze or covered with any organic insulating material). The object of this International Standard is to prescribe procedures for artificial pollution tests applicable to insulators for overhead lines, substations and traction lines and to bushings It may also be applied to hollow insulators with suitable precautions to avoid internal flashover. In applying these procedures to apparatus incorporating hollow insulators, the relevant technical committees should consider their effect on any internal equipment and the special precautions which may be necessary.

This European Standard is applicable to ceramic insulated bushings for rated voltages up to 1 000 V, rated currents from 250 A up to 5 000 A and frequencies from 15 Hz up to 60 Hz for insulating liquid filled transformers.

This International Standard is applicable to polymeric insulators whose insulating body consists of one or various organic materials. Polymeric insulators covered by this standard include both solid core and hollow insulators. They are intended for use on HV overhead lines and in indoor and outdoor equipment. The object of this standard is
– to define the common terms used for polymeric insulators;
– to prescribe common test methods for design tests on polymeric insulators;
– to prescribe acceptance or failure criteria, if applicable;
These tests, criteria and recommendations are intended to ensure a satisfactory life-time under normal operating and environmental conditions (see Clause 5). This standard shall only be applied in conjunction with the relevant product standard.

Approval procedure editing allocated to hamrani@cencenelec.eu * D137/C225: to launch approval by correspondence of IEC/TR 62662 as a CLC/TR

This European Standard is applicable to ceramic insulated bushings for rated voltages up to 1 000 V, rated currents from 250 A up to 5 000 A and frequencies from 15 Hz up to 60 Hz for insulating liquid filled transformers.

This European Standard is applicable to insulated bushings for maximum voltages above 1 kV up to 52 kV, rated currents from 250 A up to 2 500 A and frequencies from 15 Hz up to 60 Hz for equipment other than liquid filled transformers. This European Standard establishes essential dimensions, to ensure adequate mounting and interchangeability of mating plug-in separable connectors of equivalent ratings.

This International Standard specifies terms defined in standards that fall under the scope of technical committee TC 36: Insulators. It covers terms that can be found in IEC 60050-471 as well as terms not appropriate for inclusion in IEC 60050-471 but used widely in the standards of IEC TC 36. IEC 60050-471 is not intended to cover all the terms used in the various IEC standards but provides rather a general purpose vocabulary giving the basic terms and reference terms to be used by all technical committees. This glossary is intended to harmonize terms not listed in IEC 60050-471 but used in the publications of committee TC 36.

This International Standard applies to insulator strings and sets comprising string insulator units of ceramic material, glass or composite material for use on a.c. overhead lines and traction lines with a nominal voltage above 1 000 V and a frequency between 15 Hz and 100 Hz. This standard also applies to insulator strings or sets of similar design used in substations. This standard establishes a standard test procedure for power arc tests on insulator sets. It also establishes a standard test procedure for power arc tests on short strings. This standard does not apply to insulator sets mounted on non-metallic poles or towers. This standard cannot be directly applied to line post insulators or sets, or to insulating structures such as braced line-posts, since their mounting arrangement cannot be reproduced by the standard arrangements as described herein. However, this standard can be used as a basis for agreement for tests on such insulators and arrangements. The object of this standard is - to define the terms used, - to prescribe a standard test procedure, - to prescribe criteria to evaluate the results of the tests. Power arc tests are not an obligatory element of line insulator specifications. The standard test procedures and the evaluation criteria described in this standard are intended to provide testing guidance when power arc tests are felt to be necessary. It is not the object of this standard to introduce a general obligation to execute these tests.

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.

This International Standard applies to composite suspension/tension insulators consisting of a load-bearing cylindrical insulating solid core consisting of fibres - usually glass - in a resinbased matrix, a housing (outside the insulating core) made of polymeric material and end fittings permanently attached to the insulating core. Composite insulators covered by this standard are intended for use as suspension/tension line insulators, but it should be noted that these insulators can occasionally be subjected to compression or bending, for example when used as phase-spacers. This standard can be applied in part to hybrid composite insulators where the core is made of a homogeneous material (porcelain, resin), see Clause 8. The object of this standard is to - define the terms used, - prescribe test methods, - prescribe acceptance criteria. This standard does not include requirements dealing with the choice of insulators for specific operating conditions.

This International Standard applies to composite hollow insulators consisting of a load-bearing insulating tube made of resin impregnated fibres, a housing (outside the insulating tube) made of elastomeric material (for example silicone or ethylene-propylene) and metal fixing devices at the ends of the insulating tube. Composite hollow insulators as defined in this standard are intended for general use (unpressurized) or for use with a permanent gas pressure (pressurized). They are intended for use in both outdoor and indoor electrical equipment operating on alternating current with a rated voltage greater than 1 000 V and a frequency not greater than 100 Hz or for use in direct current equipment with a rated voltage greater than 1 500 V.

This Technical Specification is applicable to capacitance graded outdoor bushings with values of highest voltage for equipment (Um) from 52 kV up to 420 kV and with values of rated current (Ir) up to 3 150 A and frequencies from 15 Hz up to 60 Hz for oil immersed transformers. The major insulation of these bushings consists either of oil-impregnated or resin-impregnated paper or other suitable insulating systems. This Technical Specification establishes essential details and dimensions to ensure interchange ability and adequate mounting of the bushings.

This International Standard deals with impulse puncture testing in air of ceramic and glass insulator units of class B (see IEC 60383-1): cap and pin, pin type (including pin-post type) and class B long rod insulators. This standard may be applied also in tests on Class B insulators of other materials (e.g. polymers and composites). However, it may be useful to consider the possible need to adjust the test procedure accordingly. This standard is published with the object of specifying a standard procedure for impulse voltage puncture tests on insulators in air. Both type and sample test procedures are given.

Applies to outdoor and indoor bushings of any voltage used on d.c. systems, of capacitance graded or gas insulated types for use as components of oil-filled converter transformers and smoothing reactors, as well as air-to-air d.c. bushings.

Applicable to locking devices used with ball and socket couplings of string insulator units and used with the corresponding metal fittings standardized in EN 60120. -Defines the shapes and some standard dimensions for locking devices as well as the test methods for locking devices; -States the acceptance conditions for supply and gives other dimensions for guidance of manufacturing only. Replaces EN 60372-1 (1977) and 60372-2 (1976).

EN following parallel vote

This standard is applicable to insulated bushings for use in air insulated, shroud insulated and fully insulated cable boxes for liquid filled transformers and reactors for rated voltages up to 36 kV, and rated currents up to 4 000 A at frequencies from 15 Hz to 60 Hz.

This standard is applicable to ceramic insulated outdoor bushings for highest voltages for equipment of 24 kV and 36 kV, with rated currents of 5 kA and 8 kA and frequencies from 15 Hz up to 60 Hz for insulating liquid filled transformers. This standard establishes dimensions to ensure interchangeability and adequate mounting of bushings. Two types of construction are specified, type A and type B, both types for highest voltages for equipment 24 kV and 36 kV and rated currents of 5 kA and 8 kA. The mechanical stresses of the conductor tube make the difference between type A and type B. The conductor tube of type A is axially and radially fixed in the top of the bushing. The inner line terminal of the transformer can be flexible and without any special support for the lower end of the conductor tube. In case of type B, the conductor tube is only radially fixed in the top of the bushing. In that case, a rigid support has to be mounted to fix the lower end of the conductor tube (for example, in combination with a drip proofed sealing end). The drip proofed sealing end is often required in the service requirements. In this case, it is not possible to use type A because of the existing double fixation. Therefore, both bushing types A and B have to be specified. The condition for the usage of type B is that the drip prooved sealing end is able to withstand the mechanical stress in axial direction.

Supersedes HD 607 S1:1996

Supersedes HD 329 S1:1977 and EN 61264:1998

EN following parallel vote

EN following parallel vote

EN following parallel vote

This part of IEC 61466 is applicable to composite string insulators with a specified mechanical
load (SML) of 40 kN and 70 kN for a.c. overhead distribution 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 or on electric traction lines.
This standard applies to string insulator units of composite type with couplings in accordance
with IEC 61466-1.
This standard prescribes specified values for electrical and dimensional characteristics of
composite string insulator units for overhead distribution lines with a highest lightning impulse
level of 325 kV and a specified mechanical load (SML) of 40 kN and 70 kN.
NOTE – General definitions and methods of testing are given in IEC 61109.

EN following parallel vote

EN following parallel vote

Document prepared by CLC/TC 36B disbanded at 91 BT

EN following parallel vote * Prepared by CLC/TC 36B disbanded at 91 BT

EN following parallel vote * Document prepared by CLC/TC 36B disbanded at 91 BT

EN following parallel vote

Document prepared by CLC/TC 36B disbanded at 91 BT

Document prepared by CLC/TC 36B disbanded at 91 BT